Thermal Treatment Research Papers - Academia.edu (original) (raw)

Biomaterials like calcium phosphates are used as bioactive coatings because they increase the osteointegration of the prosthesis surfaces. Micro-arc oxidation (MAO) generates TiO2 and amorphous and crystalline calcium phosphates coatings. Crystallization thermal treatment diminishes the percentage of amorphous phases in the coating. In this study it was evaluated by Electrochemical Impedance Spectroscopy, MAO calcium phosphate coatings formed on Ti6Al4V ELI. It was found that crystallization thermal treatment between 400 and 800°C increases the crystallinity of the coating and diminishes its dissolution rate.

- by and +1
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- Materials Science, Heat Treatment, Electrochemical Impedance Spectroscopy, Coating
- by SILVIA PRATI
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- Engineering, Cultural Heritage, FTIR spectroscopy, Raman Spectroscopy
- by Stanlei Klein and +2
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- Materials Engineering, Physics, Condensed Matter Physics, Nuclear Magnetic Resonance
- by A. Stassi and +1
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- Carbon Dioxide, Scanning Electron Microscopy, Transmission Electron Microscopy, Nanotechnology

Swelling mica exhibits unique characteristics for purification of drinking water contaminated by heavy metals and for selective removal of Sr2+ and Ba2+ ions from nuclear waste solution. As a new approach to recycle fly ash, conversion of fly ash to swelling mica has been attempted and ion-exchange properties of fly ash-derived swelling mica (referred to hereinafter as FA-swelling mica) were

- by Sridhar Komarneni
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- Materials Engineering, Chemistry, Porous Materials, Transition-Metal Oxides
- by emilie korbel
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- Chemical Engineering, Drying Technology, Drying, Water Activity
- by xingwen lu
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- Engineering, Water Purification, Calcium, Differential scanning calorimetry
- by Sannakaisa Virtanen
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- Engineering, High Voltage, Magnesium, CHEMICAL SCIENCES
- by Margarida Vieira
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- Engineering, Kinetics, Biological Sciences, Peroxidase
- by Marcello Baricco
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- Engineering, Hydrogen Energy, CHEMICAL SCIENCES, Phase Transformation
- by L. Obalová
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- Pressure Drop, Nitrous Oxide, Thermal Treatment, Plug Flow Reactor
- by I. Szczygieł
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- Phase Transitions, Phase transition, Crystallinity, X ray diffraction

Protothecosis has been reported in humans (gastroenteritis, bursitis, etc.) and in many other animal species. Bovine mastitis represents the main form of occurrence of protothecosis in cattle. Milk as well as dairy products, when contaminated with Prototheca spp., represent a potential means of transmission of this zoonosis. The purpose of this study was to evaluate the susceptibility of forty Prototheca zopfii strains isolated from milk from intramammary infections in dairy cows and also from bulk milk tanks of dairy farms, to the different ratios of temperature/time employed in the thermal treatment of milk: 72-75 degrees C/15 seconds, 72-75 degrees C/20 seconds and 62-65 degrees C/30 minutes. The samples were subjected to these different temperature/time ratios. The evaluation of the thermal susceptibility of the P. zopfii strains showed that 34 strains were resistant in at least one of the tests. The results point out the need to consider the importance of mastitis caused by Pro...

- by Nilson Roberti Benites
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- Plant Biology, Public Health, Bovine Mastitis, Female
- by Abdelbast Guerfi and +1
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- Engineering, Heat Treatment, Potato, Current Density
- by Hüseyin Yılmaz ARUNTAŞ
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- Architecture, Autoclaved Aerated Concrete, Compressive Strength, Building
- by Christian Ludwig
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- Chemical Engineering, Chemistry, Mass Transfer, Arsenic
- by Mira Ristić
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- Physical Chemistry, FTIR spectroscopy, Differential scanning calorimetry, Nickel
- by F. Cozzi and +1
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- Rheumatology, Pain, Treatment Outcome, Pain Management
- by Vicenta Devesa
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- Arsenic, Refrigeration, Risk assessment, Food Preservation
- by Pascal Normand and +3
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- Microelectronic, Ion Implantation, Thermal Treatment, Ion Beam
- by Robbie Venderbosch
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- Mechanical Engineering, Chemical Engineering, High Pressure, Fuel
- by Diane Barrett
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- Engineering, Ph, Methylation, Activation Energy
- by Bhuwan Prasad
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- Engineering, Scanning Electron Microscopy, CHEMICAL SCIENCES, Thermal Treatment
- by Leonardo Marcílio
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- Engineering, Production, Modeling, Combustion
- by Leif Lundin
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- Physical Layer, Thermal Stability, Particle Size, Thermal Treatment
- by Erik Swietlicki
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- Environmental Engineering, Nanoparticle, Transmission Electron Microscopy, Environmental Sciences
- by Leonardo Palmisano
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- Engineering, Technology, Scanning Electron Microscopy, Titanium
- by Richard Uhl
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- Humans, Collagen, Female, Male
- by George Ziobro
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- Engineering, Technology, Biological Sciences, Ethanol Production
- by Vincenzo Bruno and +3
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- Vibrational Spectroscopy, Impedance Spectroscopy, Thin Film, Thermal Treatment
- by Nikolai Lebovka
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- Pulsed Electric Field, Activation Energy, Thermal Treatment, Indexation
- by Michela Bosetti
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- Biomaterials, Protein adsorption, Osseointegration, Cell Adhesion
- by Ioannis Antonopoulos and +2
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- Chemical Engineering, Municipal Solid Waste, Solid waste, Environmental Impact
- by Andrzej M Kłonkowski
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- Materials Engineering, Optical Spectroscopy, Red Light, Silica
- by Maria Corradini
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- Chemical Engineering, Kinetics, Food, Mathematical Modeling
- by Goran Štefanić
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- Materials Engineering, Condensed Matter Physics, Polymorphism, Raman Spectroscopy
- by Ivan Chodák and +1
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- Materials Engineering, Chemical Engineering, POlymer degradation and stability, Differential scanning calorimetry

In this article are presented results from the investigations of some peculiarities in the process of soldering on small topological forms in PCBs. The investigation is dedicated to the surface mount technology and deals with lead contained and lead free solder alloy pastes. Attention is paid on the implementation of contact pads with lead free surface finish. For this purpose are used galvanic deposited coatings and different solders. The results are obtained when using temperature profiles of typical production process at regimes, recommended by the solder paste vendors. In the experiments are implemented specially developed test lay outs and samples, manufactured from PCB material. Predominantly are investigated the processes of solder wetting in atmospheric surrounding.

- by Nikola Stefanov
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- Materials Science, Soldering, Research Method, Theoretical Analysis
- by Darek Bogdal
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- Materials Engineering, Organic Chemistry, Polymer science, Recycling
- by Wouter De Heij
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- Engineering, Microbiology, High Pressure, Biological Sciences

In order to obtain cobalt oxides nanoparticles we have used the thermal decomposition of some carboxylate type precursors. These precursors were obtained by the redox reaction between cobalt nitrate and ethylene glycol, either bulk or dispersed in silica matrix. The redox reaction takes place by heating the Co(NO3)2·6H2O-C2H6O2 solution or the Si(OC2H5)4-Co(NO3)2·6H2O-C2H6O2 gels. Thermal analysis of the Co(NO3)2·6H2O-C2H6O2 solution and Si(OC2H5)-Co(NO3)2·6H2O-C2H6O2 gels allowed us to establish the optimal value for the synthesis temperature of the carboxylate precursors. By fast heating of the solution Co(NO3)2·6H2O-C2H6O2, the redox reaction is immediately followed by the decomposition of the precursor, which represents an autocombustion process. The product of this combustion contains CoO as unique phase. We have obtained a mixture of CoO and Co3O4 by annealing the synthesized carboxylate compounds for 2 h at 400°C. With longer annealing time (6 h), we have obtained Co3O4 as unique phase. The XRD study of the crystalline phases resulted by thermal decomposition of the precursors embedded in silica matrix, showed that the formation of Co2SiO4 and Co3O4, as unique phases, depends on the thermal treatment.

- by marcela stoia
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- Silica, Thermal Analysis, Thermal Treatment, Thermal Decomposition
- by Ilyes Jedidi
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- Arabian Gulf, Textile industry, Microfiltration, Fly Ash
- by Shuichi Wakimoto
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- X ray diffraction, Thermal Treatment
- by Rosangela Marchelli
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- Quality Control, SHELF LIFE, Thermal Treatment, Food Sciences
- by Lukmanul Lukmanul
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- Engineering, Chemical Engineering, Analytical Chemistry, Organic Chemistry
- by Margarida Vieira
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- Food Engineering, Kinetics, Ultrasound, Enzyme Kinetics