IJERT-Study on Sliding Wear Behavior of Plasma Sprayed TiO2-15%Inconel718 Coatings on Al6061 (original) (raw)
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To Investigate Dry Sliding Wear of Micro Arc Oxidated Al 6061
2015
treatment for the production of ceramic oxide coatings with great properties, such as high wear and corrosion resistance, on metal substrates, particularly aluminum and magnesium alloys. In the present investigation dry sliding wear behavior of micro arc oxidated Al 6061 has been investigated to determine weight loss of samples on Pin on Disk set up. Three parameters are selected to investigate the dry sliding wear i.e. Load, Speed and Sliding Distance. The design of experiments (DOE) approach using Taguchi method (L27 Orthogonal Array) was employed to analyze the wear behavior of MAO Al 6061 Alloy. Signal-to-noise ratio, analysis of variance (ANOVA) and regression equation were used to investigate the influence of parameters on the wear rate.
Note on POD test parameters to study wear behaviour of alumina–titania coatings
Materials Characterization, 2004
Wear behaviour of atmospheric plasma sprayed (APS) alumina -titania coating is investigated using Pin-On-Disc (POD) test. Mean friction coefficient values are assessed using the cumulative probability plot. Results showed that the friction coefficient increased with both sliding velocity and applied load. D 2004 Elsevier Inc. All rights reserved.
Wear on tool steel AISI M2, D6 and 52100 coated with Al 2O 3 by the MOCVD process
Journal of Materials Processing Technology, 2006
Present work investigates the wear resistance of tool steels and 52100 steel coated with Al 2 O 3 by MOCVD process. The wear tests by sliding and abrasion were performed in a pin-on-disk and ball-on-disk apparatus whose pin and ball substrates were steels fabricated from AISI M2, D6 and 52100. The MOCVD coating processes were carried out in a research laboratory apparatus at 200 • C under N 2 + O 2 atmosphere. The counterface disks were ABNT 1008 steel sheet used in the brazilian fridge industry. The wear resistances of the coated tool steels were evaluated trough the pin-on-disk test, using a sliding velocity 0.6 m/s, normal loads of 20 and 30 N, total sliding distance of 2400 m and controlled conditions of temperature and humidity. The pin and ball material substrate were quenched and tempered, and the disks were tested as received. From the plotted graphs of lost volume versus sliding distance, it was observed that occurred a greater wear rate of AISI D6 pins without coating, this is possibly due to more severe adhesion and delamination mechanisms. The AISI M2 and D6 pin coated with Al 2 O 3 showed similar wear resistance and higher resistance than the uncoated D6 pin. However, the tested sphere of AISI 52100 showed different behaviour under 20 N normal load. For both sphere coated with Al 2 O 3 and uncoated the wear rate were similar. From microscopy observations, in order to have accurate measures of ball wear rate, it is proposed a new method to measure wear resistance of ball and pin in the pin-on-disk tests: wear can be measured by the wear track width or area left on the ball tip. The graphs of track width versus sliding distance are shown and the curves for tested material and coating are compared. Pin and ball lower lost volume rate and wear track width with sliding distance is related to greater surface hardness after heat treatment and the coating process. Nitrided M2 and D6 tool steels coated with Al 2 O 3 showed superior wear resistance characteristics for cold working tooling. The spheres of AISI 52100 coated with Al 2 O 3 presented poor wear resistance due to surface defects.
International Journal of Engineering Research and Technology (IJERT), 2013
https://www.ijert.org/the-experimental-investigation-of-wear-behaviour-on-al-7075-t6-coated-with-nickel-chrome-carbide https://www.ijert.org/research/the-experimental-investigation-of-wear-behaviour-on-al-7075-t6-coated-with-nickel-chrome-carbide-IJERTV2IS110517.pdf A fundamentally new family of thermal spray processes has emerged. These new processes, collectively known as very low pressure plasma spray or VLPPS, differ from traditional thermal spray processes in that coatings are deposited at unusually low chamber pressures, typically less than ~800 Pa (6 Torre). Depending upon the specific process, deposition may be in the form of AL 7075 T6 very fine molten droplets, vapour phase deposition, or a mixture of vapour and droplet deposition. Resulting coatings are similar in quality to coatings produced by alternative coating technologies, such as physical vapour deposition (PVD) or chemical vapour deposition (CVD), but deposition rates can be roughly an order of magnitude higher with VLPPS. With these new process technologies modified low pressure plasma spray (LPPS) systems can now be used to produce dense, high quality coatings in the 1 to 100 micron thickness range with lamellar or columnar microstructures. A history of pioneering work in VLPPS technology is presented, deposition mechanisms are discussed, potential new applications are reviewed, and challenges for the future are outlined.
TRIBOLOGICAL WEAR ANALYSIS OF Ti-Al COMPOSITE COATINGS APPLIED WITH THE COLD SPRAY METHOD
Tribologia
The possibility of using the low-pressure cold gas spraying (LPCS) method to create composite coatings hasbeen known and used for a long time. This method makes it possible to create coatings from physically andchemically different powders and to regenerate components damaged during operation. Composite coatingsof titanium and aluminium at different weight concentrations were selected for the study. The research wasconducted to optimise the influence of the chemical composition of the composite coatings on their tribologicalproperties. This paper presents the results of tribological wear testing of composite coatings applied using thelow-pressure cold gas spray (LPCS) method. Wear resistance tests were performed using the ball-on-platemethod in reciprocating motion using a steel ball. Tribological testing of the coatings included determiningthe effect of contact force on wear and the value of the kinetic coefficient of friction of the friction pairs tested.The study determined the o...
Enhancement of Tribological Properties of Al 6060 by Spray Coated TiO2 Nanoparticle
Transactions of the Indian Institute of Metals
Al 6060 alloy was coated with TiO 2 by spray pyrolysis technique at 400°C using Titanium isopropoxide as precursor. The adhesion of the coating with the alloy was enhanced by annealing at 450°C for 1 h which increased the hardness by 50%. Dry sliding wear resistance was experimented based on Taguchi's L 27 array using pinon-disc tribometer by varying parameters such as applied load (15, 25 and 35 N), sliding distance (500, 1000 and 1500 m) and sliding velocity (1.5, 2.5 and 3.5 m/s). Analysis of Variance predicted the major influence by load, followed by velocity and distance. Trend depicted an increase in wear rate with load and distance, whereas with velocity it decreased initially and then increased. Optimum condition for maximum wear resistance was determined from the Signal-to-Noise ratio. Experimental results were validated using regression equation with an error less than 3%. Scanning Electron Microscope analysis of the worn surfaces had revealed more defoilage and lay-off as the applied load was increased.
Dry/wet sliding activation wear of pure Al / R. M. Nasir...[et al.]
Faculty of Mechanical Engineering Universiti Teknologi MARA (UiTM), 2017
An experimental work to study the wear behavior of pure Aluminium (Al) block was conducted against steel counter surface in Pin-on-Disc (POD) and the aluminium ball using four ball testing (4BT) method on dry/wet sliding wear technique at room temperature. Wear test conditions of 10-50 N load with sliding speed of 20-100 rpm was used to assess the friction coefficient, wear rate and the severance of wear mechanism on the damage surface. Due to the friction from the third body abrasive and protruded Al surfaces showcased mild wear with a steady state coefficient friction ranging from 0.0019-0.0043 for dry sliding and on wet condition ranging from 0.12-0.23 in vegetable oil (with average scar area of 8.0752 mm 2) and from 0.058-0.085 for mineral oil used (with average scar area of 17.1549 mm 2). Stress generation of the uncoated sample allowed the abraded plastic deformation to be classified as severe wear.
Transactions of the Indian Institute of Metals, 2013
This paper reports the wear characteristics of the ceramic coatings made with Al 2 O 3 and also with SiC which were performed using atmospheric plasma spraying technique on the Ti-6Al-4V biomedical alloy with the aim of improving their tribological behavior. The wear behavior of the coatings was evaluated using reciprocatory wear tester with coated substrate as the flat and alumina ball as a friction partner in simulated body fluid (Hank's solution) environment. The microstructure and phase composition of the ceramic powders and as-sprayed coatings have been characterized using scanning electron microscope and X-ray diffractometer. Porosity, microhardness, adhesion strength and roughness of the coatings were measured as they have a bearing on wear and friction behavior. The results indicate that plasma sprayed Al 2 O 3 coating exhibits higher wear resistance compared to that of plasma sprayed SiC coating. The higher wear resistance of Al 2 O 3 coating is attributed to the improved melting and spreading of the alumina particles onto the substrate yielding increasingly bonded splats, resulting in compact and dense microstructure with lower porosity and higher microhardness.