Tatjana Volkov Husovic | Univeristy of Belgrade, Faculty of Technology and Metallurgy (original) (raw)

Papers by Tatjana Volkov Husovic

Research paper thumbnail of Multiscale Modeling of Wetting during Metal-Ceramic Joining

Page 1. Multiscale Modeling of Wetting during Metal-Ceramic Joining Marija Mihailović1, Karlo T. ... more Page 1. Multiscale Modeling of Wetting during Metal-Ceramic Joining Marija Mihailović1, Karlo T. Raic2,Sinisa Dj. Mesarovic3,* and Tatjana Volkov-Husović2 1 Institute for Technology of Nuclear and Other Mineral Raw Materials, Franchet d'Esperey Str. ...

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Research paper thumbnail of Image analysis as a useful tool for fast detection of dimensional and structural changes of poly(ethylene terephthalate) containers

Chemical Industry, 2018

The aim of this paper is to present image analysis as a useful technique for fast, reliable and n... more The aim of this paper is to present image analysis as a useful technique for fast, reliable and non-destructive detection of dimensional and structural changes in polymers. The possibility of applying image analysis was demonstrated in the case of solvent-induced crystallization of poly(ethylene terephthalate) (PET) containers filled with commonly used organic solvents: chlorobenzene, isophorone, xylene, Espesol, Shellsol A 100, Solvesso 150, propylene glycol, glycerin and water and subjected to the storage stability test at 54 ?C for 14 days (CIPAC 1-MT 46.1.3). In addition, the obtained results were analyzed using one-step analysis of variance (ANOVA) combined with the Duncan?s statistical test (p<0.05). According to the achieved results, three main impacts of the presented paper could be distinguished: 1) dimensional and transparency changes could be precisely followed by image analysis in both following cases: for small changes in water, as well as for significant ones in chl...

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Research paper thumbnail of Thermal shock properties of glass-ceramics synthesized from a glass frit

Science of Sintering, 2017

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Research paper thumbnail of Anisotropy analysis of low cement concrete by ultrasonic measurements and image analysis

Science of Sintering, 2016

The analized material was high alumina low cement castable sintered at three different temperatur... more The analized material was high alumina low cement castable sintered at three different temperatures. Influence of initial material anisotropy on the thermal shock resistance as well as changes of anisotropy level during the thermal shock were studied. Water quench test was used as an experimental method for the thermal stability testing. Surface anisotropy was analysed by image analysis and structural anisotropy using ultrasonic measurements. The results pointed out that the highest homogeinity and the lowest surface and structural anisotropy was for the samples sintered at 1600?C. Surface anistoropy had prevailing infuence on behavior of material during the thermal shock, but the structural anisotropy should not be neglected.

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Research paper thumbnail of Thermal shock damage characterization of high temperature ceramics by non destructive test methods

Ceramics− …, 2008

The knowledge of the thermal shock resistance of refractory materials is of outmost importance si... more The knowledge of the thermal shock resistance of refractory materials is of outmost importance since it determines their performance in many applications, from ceramic manufacturing to oil refinery, thermal insulation, nuclear power, chemical and petrochemical industries. ...

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Research paper thumbnail of Quantitative evaluation of sulfur–polymer matrix composite quality

Composites Part B: Engineering, 2013

Abstract In order to predict service life of the sulfur–polymer composite, the samples were subje... more Abstract In order to predict service life of the sulfur–polymer composite, the samples were subjected to the induced destruction using 10% hydrochloric acid solution. Control specimens were prepared using Portland cement binder. Sulfur–polymer composite showed limited mechanical strength and mass loss, while physico-mechanical properties of Portland cement composite regressed rapidly. The Image Pro Plus software was used for surface destruction monitoring. The simulations for composites were applied to the previously reported model for predicting the mechanical strength degradation during durability testing, based on the image analysis results. The results proved that the time gradient of structural change was useful for quantification of service life, therefore it can be accepted as a parameter that represents service life.

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Research paper thumbnail of Characterization of thermal shock damage in cordierite-mullite refractory materials by non-destructive methods

Metalurgija, 2007

Ultrasonic pulse velocity testing and image analysis were used to predict thermal stability of re... more Ultrasonic pulse velocity testing and image analysis were used to predict thermal stability of refractories. Two cordierite-mullite compositions used as substrates in fast firing of porcelain white ware characterized by different microstructure morphologies and crack propagation behavior were investigated. The measurement of the ultrasonic velocity was used to asses the material degradation with increasing thermal shock cycles and specimen damage was monitored using image analysis and further results of material degradation were obtained. ...

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Research paper thumbnail of High temperature materials: properties, demands and applications

Chemical Industry

High-temperature materials are used in a wide range of industries and applications such as gas tu... more High-temperature materials are used in a wide range of industries and applications such as gas turbine engines for aircrafts, power and nuclear power plants, different types of furnaces, including blast furnaces, some fuel cells, industrial gas turbines, different types of reactors, engines, electronic and lighting devices, and many others. Demands for high-temperature materials are becoming more and more challenging every year. To perform efficiently, effectively and at the same time to be economically viable, the materials used at high temperatures must have certain characteristics that are particularly expected for applying under such extreme conditions, for example, the strength and thermal resistance. In the present review, some important requirements that should be satisfied by high temperature materials will be discussed. Furthermore, the focus is put on refractory concretes, ceramics, intermetallic alloys, and composites as four different categories of these materials, which...

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Research paper thumbnail of Application of instrumental methods in the investigation of properties and microstructure of construction concretes

Methods for the investigation of microstructure of construction concretes are presented in this p... more Methods for the investigation of microstructure of construction concretes are presented in this paper. Concrete is a composite material, thus its microstructure consists of bonding agent (cement) and aggregate with predefined grain sizes. Microstructure can be investigated with methods such are: scanning electron microscopy (SEM) and Image Pro Plus - PC program for image analysis. Phase content and certain properties can be investigated using X-ray diffraction, DTA, TGA and dilatometer. Metods are described using sample of concrete with recycled chamotte filler.

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Research paper thumbnail of Basalt-polyester hybrid composite materials for demanding wear applications

Science of Sintering

Basalt as a filler in a polymer-based composite material fulfils the demand of being natural, env... more Basalt as a filler in a polymer-based composite material fulfils the demand of being natural, environment-friendly material for the production of various composite materials. The material could be used as protective layer and the abrasion should be tested in order to evaluate the properties of the material. The cavitation test enables the evaluation of the possible service in conditions that simulate the extensive erosion. The presence of basalt in the matrix improves the resistance to cavitation. The possibility to further improve the material could be obtained using the reinforcement of the matrix itself by incorporation of submicron ceramic particles into the composite. The obtained hybrid composite material with the addition of reinforcement in the matrix further improves the cavitation resistance.

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Research paper thumbnail of Mechanical performance of epoxy matrix hybrid nanocomposites containing carbon nanotubes and nanodiamonds

Materials & Design, 2015

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Research paper thumbnail of Nondestructive evaluation of surface degradation of silicon carbide–cordierite ceramics subjected to the erosive wear

Materials & Design, 2013

ABSTRACT Covalent bond in SiC ceramic request high temperature for its sintering. In order to put... more ABSTRACT Covalent bond in SiC ceramic request high temperature for its sintering. In order to put down sintering temperature of SiC ceramics we choose cordierite as phase between SiC particles. Reactive sintering is an effective way to produce ceramics at relatively low temperature. We have created in situ SiC/cordierite composite at 1250 °C. Cordierite precursor was made from commercially available spinel, alumina and quartz.The possibilities of using silicon carbide–cordierite material as resistant to the erosive wear was goal of this investigation. The fluid dynamic system of the experimental methodology was used here to produce ultrasonic erosive wear. Mass loss and level of degradation were measured before and during the experiment. Level of degradation of the samples was monitored using Image Pro Plus program for image analysis. Average erosion ring diameter as well as average erosion area were monitored during experiment. Obtained results pointed out that after 150 min sample exhibited excellent erosion resistance compared to metal and ceramic samples.

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Research paper thumbnail of The effect of Y2O3 addition on thermal shock behavior of magnesium aluminate spinel

Science of Sintering, 2009

The effect of yttria additive on the thermal shock behavior of magnesium aluminate spinel has bee... more The effect of yttria additive on the thermal shock behavior of magnesium aluminate spinel has been investigated. As a starting material we used spinel (MgAl2O4) obtained by the modified glycine nitrate procedure (MGNP). Sintered products were characterized in terms of phase analysis, densities, thermal shock, monitoring the damaged surface area in the refractory specimen during thermal shock and ultrasonic determination of the Dynamic Young modulus of elasticity. It was found that a new phase between yttria and alumina is formed, which improved thermal shock properties of the spinel refractories. Also densification of samples is enhanced by yttria addition.

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Research paper thumbnail of The ultrasonic and image analysis method for non-destructive quantification of the thermal shock damage in refractory specimens

Materials & Design, 2009

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Research paper thumbnail of SiC synthesis using domestic mineral resources

Processing and Application of Ceramics, 2011

The possibility of using domestic Mg-silicate (sepiolite, white) as Si source and novolac resin (... more The possibility of using domestic Mg-silicate (sepiolite, white) as Si source and novolac resin (as carbon source), for synthesis of fine ?-SiC powder at relatively low temperatures (1673-1873 K), was demonstrated. Obtained SiC powders consist of fine ?-SiC particles and did not retain the fibrous morphology of starting sepiolites. Carbothermal reduction process, which was used in this study, is greatly influenced by catalyst addition (FeCl3, FeSi). In order to obtain pure SiC powders, it is necessary to completely remove all Mg-species, and catalytic influence of Fe is attributed to FeSi important role in reduction of Mg2SiO4 and MgO into Mg(g). Formation of SiC whiskers is observed only in samples with Fe introduced in form of iron-silicide (FeSi).

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Research paper thumbnail of Oxidation and erosion behaviour of SiC-HfC multilayered composite

Processing and Application of Ceramics, 2014

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Research paper thumbnail of An Improved Mehod for Thermal Stability Behavior Characterization of Silicon Carbide / Cordierite Composite Material

In the present work Mg-exchanged zeolit and silicon carbide were used as starting materials for o... more In the present work Mg-exchanged zeolit and silicon carbide were used as starting materials for obtaining cordierite/SiC composite ceramics with weight ratio 50:50. Samples were exposed to the water quench test from 950 o C, applying various number of thermal cycles (shocks). Level of surface deterioration before and during quenching was monitored by image analysis. Ultrasonic measurements were used as non-destructive quantification of thermal shock damage in refractory specimens. When refractory samples are subjected to the rapid temperature changes crack nucleation and propagation occurs resulting in loss of strength and materials degradation. The formation of cracks decreases the density and elastic properties of material. Therefore measuring these properties can directly monitor the development of thermal shock damage level. Dynamic Young modulus of elasticity and strength degradation were calculated using measured values of ultrasonic velocities obtained by ultrasonic measureme...

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Research paper thumbnail of Nondestructive Testing of Thermal Shock Resistance of Cordierite/Silicon Carbide Composite Materials after Cyclic Thermal Shock

Research in Nondestructive Evaluation, 2010

Two different types cordierite/silicon carbide composite ceramic materials (KS 50 and KZ 50) were... more Two different types cordierite/silicon carbide composite ceramic materials (KS 50 and KZ 50) were used for this investigation. Both materials were exposed to the water quench test from 950°C, applying various numbers of thermal cycles. When refractory samples are subjected to the rapid temperature changes crack nucleation and propagation occurs resulting in loss of strength and materials degradation. The formation of cracks decreases the density and elastic properties of material. Therefore, measuring these properties can directly monitor the development of thermal shock damage level. Dynamic Young modulus of elasticity and strength degradation were calculated using measured values of ultrasonic velocities obtained by ultrasonic measurements. Level of degradation of the samples was monitored before and during testing using Image Pro Plus program for image analysis. The capability of ultrasonic velocity technique and image analysis for simple and reliable nondestructive methods of characterization was presented in this investigation. It was found that both composite materials exhibit good thermal shock resistance.

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Research paper thumbnail of Cavitation resistance of refractory concrete: Influence of sintering temperature

Journal of the European Ceramic Society, 2013

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Research paper thumbnail of Determination of thermal shock resistance of silicon carbide/cordierite composite material using nondestructive test methods

Journal of the European Ceramic Society, 2008

ABSTRACT In the present work Mg-exchanged zeolit and silicon carbide were used as starting materi... more ABSTRACT In the present work Mg-exchanged zeolit and silicon carbide were used as starting materials for obtaining cordierite/SiC composite ceramics with weight ratio 30:70 and 50:50. Behavior of composite ceramics after thermal shock treatments was investigated. Thermal shock of the samples was measured using standard laboratory procedure, water quench test (JUS.B.D8.319.). Level of surface deterioration before and during quenching was monitored by image analysis. Ultrasonic measurements were used as nondestructive quantification of thermal shock damage in refractory specimens. When refractory samples are subjected to the rapid temperature changes crack nucleation and propagation occurs resulting in loss of strength and materials degradation. The formation of cracks decreases the density and elastic properties of material. Therefore measuring these properties can directly monitor the development of thermal shock damage level. Dynamic Young modulus of elasticity and strength degradation were calculated using measured values of ultrasonic velocities obtained by ultrasonic measurements. Level of degradation of the samples was monitored before and during testing using Image Pro Plus program for image analysis. The capability of ultrasonic velocity technique and image analysis for simple, and reliable nondestructive methods of characterization are presented in this investigation. It was found that both composite materials exhibit good thermal shock resistance.

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Research paper thumbnail of Multiscale Modeling of Wetting during Metal-Ceramic Joining

Page 1. Multiscale Modeling of Wetting during Metal-Ceramic Joining Marija Mihailović1, Karlo T. ... more Page 1. Multiscale Modeling of Wetting during Metal-Ceramic Joining Marija Mihailović1, Karlo T. Raic2,Sinisa Dj. Mesarovic3,* and Tatjana Volkov-Husović2 1 Institute for Technology of Nuclear and Other Mineral Raw Materials, Franchet d'Esperey Str. ...

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Research paper thumbnail of Image analysis as a useful tool for fast detection of dimensional and structural changes of poly(ethylene terephthalate) containers

Chemical Industry, 2018

The aim of this paper is to present image analysis as a useful technique for fast, reliable and n... more The aim of this paper is to present image analysis as a useful technique for fast, reliable and non-destructive detection of dimensional and structural changes in polymers. The possibility of applying image analysis was demonstrated in the case of solvent-induced crystallization of poly(ethylene terephthalate) (PET) containers filled with commonly used organic solvents: chlorobenzene, isophorone, xylene, Espesol, Shellsol A 100, Solvesso 150, propylene glycol, glycerin and water and subjected to the storage stability test at 54 ?C for 14 days (CIPAC 1-MT 46.1.3). In addition, the obtained results were analyzed using one-step analysis of variance (ANOVA) combined with the Duncan?s statistical test (p<0.05). According to the achieved results, three main impacts of the presented paper could be distinguished: 1) dimensional and transparency changes could be precisely followed by image analysis in both following cases: for small changes in water, as well as for significant ones in chl...

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Research paper thumbnail of Thermal shock properties of glass-ceramics synthesized from a glass frit

Science of Sintering, 2017

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Research paper thumbnail of Anisotropy analysis of low cement concrete by ultrasonic measurements and image analysis

Science of Sintering, 2016

The analized material was high alumina low cement castable sintered at three different temperatur... more The analized material was high alumina low cement castable sintered at three different temperatures. Influence of initial material anisotropy on the thermal shock resistance as well as changes of anisotropy level during the thermal shock were studied. Water quench test was used as an experimental method for the thermal stability testing. Surface anisotropy was analysed by image analysis and structural anisotropy using ultrasonic measurements. The results pointed out that the highest homogeinity and the lowest surface and structural anisotropy was for the samples sintered at 1600?C. Surface anistoropy had prevailing infuence on behavior of material during the thermal shock, but the structural anisotropy should not be neglected.

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Research paper thumbnail of Thermal shock damage characterization of high temperature ceramics by non destructive test methods

Ceramics− …, 2008

The knowledge of the thermal shock resistance of refractory materials is of outmost importance si... more The knowledge of the thermal shock resistance of refractory materials is of outmost importance since it determines their performance in many applications, from ceramic manufacturing to oil refinery, thermal insulation, nuclear power, chemical and petrochemical industries. ...

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Research paper thumbnail of Quantitative evaluation of sulfur–polymer matrix composite quality

Composites Part B: Engineering, 2013

Abstract In order to predict service life of the sulfur–polymer composite, the samples were subje... more Abstract In order to predict service life of the sulfur–polymer composite, the samples were subjected to the induced destruction using 10% hydrochloric acid solution. Control specimens were prepared using Portland cement binder. Sulfur–polymer composite showed limited mechanical strength and mass loss, while physico-mechanical properties of Portland cement composite regressed rapidly. The Image Pro Plus software was used for surface destruction monitoring. The simulations for composites were applied to the previously reported model for predicting the mechanical strength degradation during durability testing, based on the image analysis results. The results proved that the time gradient of structural change was useful for quantification of service life, therefore it can be accepted as a parameter that represents service life.

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Research paper thumbnail of Characterization of thermal shock damage in cordierite-mullite refractory materials by non-destructive methods

Metalurgija, 2007

Ultrasonic pulse velocity testing and image analysis were used to predict thermal stability of re... more Ultrasonic pulse velocity testing and image analysis were used to predict thermal stability of refractories. Two cordierite-mullite compositions used as substrates in fast firing of porcelain white ware characterized by different microstructure morphologies and crack propagation behavior were investigated. The measurement of the ultrasonic velocity was used to asses the material degradation with increasing thermal shock cycles and specimen damage was monitored using image analysis and further results of material degradation were obtained. ...

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Research paper thumbnail of High temperature materials: properties, demands and applications

Chemical Industry

High-temperature materials are used in a wide range of industries and applications such as gas tu... more High-temperature materials are used in a wide range of industries and applications such as gas turbine engines for aircrafts, power and nuclear power plants, different types of furnaces, including blast furnaces, some fuel cells, industrial gas turbines, different types of reactors, engines, electronic and lighting devices, and many others. Demands for high-temperature materials are becoming more and more challenging every year. To perform efficiently, effectively and at the same time to be economically viable, the materials used at high temperatures must have certain characteristics that are particularly expected for applying under such extreme conditions, for example, the strength and thermal resistance. In the present review, some important requirements that should be satisfied by high temperature materials will be discussed. Furthermore, the focus is put on refractory concretes, ceramics, intermetallic alloys, and composites as four different categories of these materials, which...

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Research paper thumbnail of Application of instrumental methods in the investigation of properties and microstructure of construction concretes

Methods for the investigation of microstructure of construction concretes are presented in this p... more Methods for the investigation of microstructure of construction concretes are presented in this paper. Concrete is a composite material, thus its microstructure consists of bonding agent (cement) and aggregate with predefined grain sizes. Microstructure can be investigated with methods such are: scanning electron microscopy (SEM) and Image Pro Plus - PC program for image analysis. Phase content and certain properties can be investigated using X-ray diffraction, DTA, TGA and dilatometer. Metods are described using sample of concrete with recycled chamotte filler.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Basalt-polyester hybrid composite materials for demanding wear applications

Science of Sintering

Basalt as a filler in a polymer-based composite material fulfils the demand of being natural, env... more Basalt as a filler in a polymer-based composite material fulfils the demand of being natural, environment-friendly material for the production of various composite materials. The material could be used as protective layer and the abrasion should be tested in order to evaluate the properties of the material. The cavitation test enables the evaluation of the possible service in conditions that simulate the extensive erosion. The presence of basalt in the matrix improves the resistance to cavitation. The possibility to further improve the material could be obtained using the reinforcement of the matrix itself by incorporation of submicron ceramic particles into the composite. The obtained hybrid composite material with the addition of reinforcement in the matrix further improves the cavitation resistance.

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Research paper thumbnail of Mechanical performance of epoxy matrix hybrid nanocomposites containing carbon nanotubes and nanodiamonds

Materials & Design, 2015

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Research paper thumbnail of Nondestructive evaluation of surface degradation of silicon carbide–cordierite ceramics subjected to the erosive wear

Materials & Design, 2013

ABSTRACT Covalent bond in SiC ceramic request high temperature for its sintering. In order to put... more ABSTRACT Covalent bond in SiC ceramic request high temperature for its sintering. In order to put down sintering temperature of SiC ceramics we choose cordierite as phase between SiC particles. Reactive sintering is an effective way to produce ceramics at relatively low temperature. We have created in situ SiC/cordierite composite at 1250 °C. Cordierite precursor was made from commercially available spinel, alumina and quartz.The possibilities of using silicon carbide–cordierite material as resistant to the erosive wear was goal of this investigation. The fluid dynamic system of the experimental methodology was used here to produce ultrasonic erosive wear. Mass loss and level of degradation were measured before and during the experiment. Level of degradation of the samples was monitored using Image Pro Plus program for image analysis. Average erosion ring diameter as well as average erosion area were monitored during experiment. Obtained results pointed out that after 150 min sample exhibited excellent erosion resistance compared to metal and ceramic samples.

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Research paper thumbnail of The effect of Y2O3 addition on thermal shock behavior of magnesium aluminate spinel

Science of Sintering, 2009

The effect of yttria additive on the thermal shock behavior of magnesium aluminate spinel has bee... more The effect of yttria additive on the thermal shock behavior of magnesium aluminate spinel has been investigated. As a starting material we used spinel (MgAl2O4) obtained by the modified glycine nitrate procedure (MGNP). Sintered products were characterized in terms of phase analysis, densities, thermal shock, monitoring the damaged surface area in the refractory specimen during thermal shock and ultrasonic determination of the Dynamic Young modulus of elasticity. It was found that a new phase between yttria and alumina is formed, which improved thermal shock properties of the spinel refractories. Also densification of samples is enhanced by yttria addition.

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Research paper thumbnail of The ultrasonic and image analysis method for non-destructive quantification of the thermal shock damage in refractory specimens

Materials & Design, 2009

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Research paper thumbnail of SiC synthesis using domestic mineral resources

Processing and Application of Ceramics, 2011

The possibility of using domestic Mg-silicate (sepiolite, white) as Si source and novolac resin (... more The possibility of using domestic Mg-silicate (sepiolite, white) as Si source and novolac resin (as carbon source), for synthesis of fine ?-SiC powder at relatively low temperatures (1673-1873 K), was demonstrated. Obtained SiC powders consist of fine ?-SiC particles and did not retain the fibrous morphology of starting sepiolites. Carbothermal reduction process, which was used in this study, is greatly influenced by catalyst addition (FeCl3, FeSi). In order to obtain pure SiC powders, it is necessary to completely remove all Mg-species, and catalytic influence of Fe is attributed to FeSi important role in reduction of Mg2SiO4 and MgO into Mg(g). Formation of SiC whiskers is observed only in samples with Fe introduced in form of iron-silicide (FeSi).

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Research paper thumbnail of Oxidation and erosion behaviour of SiC-HfC multilayered composite

Processing and Application of Ceramics, 2014

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Research paper thumbnail of An Improved Mehod for Thermal Stability Behavior Characterization of Silicon Carbide / Cordierite Composite Material

In the present work Mg-exchanged zeolit and silicon carbide were used as starting materials for o... more In the present work Mg-exchanged zeolit and silicon carbide were used as starting materials for obtaining cordierite/SiC composite ceramics with weight ratio 50:50. Samples were exposed to the water quench test from 950 o C, applying various number of thermal cycles (shocks). Level of surface deterioration before and during quenching was monitored by image analysis. Ultrasonic measurements were used as non-destructive quantification of thermal shock damage in refractory specimens. When refractory samples are subjected to the rapid temperature changes crack nucleation and propagation occurs resulting in loss of strength and materials degradation. The formation of cracks decreases the density and elastic properties of material. Therefore measuring these properties can directly monitor the development of thermal shock damage level. Dynamic Young modulus of elasticity and strength degradation were calculated using measured values of ultrasonic velocities obtained by ultrasonic measureme...

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Research paper thumbnail of Nondestructive Testing of Thermal Shock Resistance of Cordierite/Silicon Carbide Composite Materials after Cyclic Thermal Shock

Research in Nondestructive Evaluation, 2010

Two different types cordierite/silicon carbide composite ceramic materials (KS 50 and KZ 50) were... more Two different types cordierite/silicon carbide composite ceramic materials (KS 50 and KZ 50) were used for this investigation. Both materials were exposed to the water quench test from 950°C, applying various numbers of thermal cycles. When refractory samples are subjected to the rapid temperature changes crack nucleation and propagation occurs resulting in loss of strength and materials degradation. The formation of cracks decreases the density and elastic properties of material. Therefore, measuring these properties can directly monitor the development of thermal shock damage level. Dynamic Young modulus of elasticity and strength degradation were calculated using measured values of ultrasonic velocities obtained by ultrasonic measurements. Level of degradation of the samples was monitored before and during testing using Image Pro Plus program for image analysis. The capability of ultrasonic velocity technique and image analysis for simple and reliable nondestructive methods of characterization was presented in this investigation. It was found that both composite materials exhibit good thermal shock resistance.

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Research paper thumbnail of Cavitation resistance of refractory concrete: Influence of sintering temperature

Journal of the European Ceramic Society, 2013

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Research paper thumbnail of Determination of thermal shock resistance of silicon carbide/cordierite composite material using nondestructive test methods

Journal of the European Ceramic Society, 2008

ABSTRACT In the present work Mg-exchanged zeolit and silicon carbide were used as starting materi... more ABSTRACT In the present work Mg-exchanged zeolit and silicon carbide were used as starting materials for obtaining cordierite/SiC composite ceramics with weight ratio 30:70 and 50:50. Behavior of composite ceramics after thermal shock treatments was investigated. Thermal shock of the samples was measured using standard laboratory procedure, water quench test (JUS.B.D8.319.). Level of surface deterioration before and during quenching was monitored by image analysis. Ultrasonic measurements were used as nondestructive quantification of thermal shock damage in refractory specimens. When refractory samples are subjected to the rapid temperature changes crack nucleation and propagation occurs resulting in loss of strength and materials degradation. The formation of cracks decreases the density and elastic properties of material. Therefore measuring these properties can directly monitor the development of thermal shock damage level. Dynamic Young modulus of elasticity and strength degradation were calculated using measured values of ultrasonic velocities obtained by ultrasonic measurements. Level of degradation of the samples was monitored before and during testing using Image Pro Plus program for image analysis. The capability of ultrasonic velocity technique and image analysis for simple, and reliable nondestructive methods of characterization are presented in this investigation. It was found that both composite materials exhibit good thermal shock resistance.

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