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- Title
Sliding Wear Behavior of HVOF Sprayed Abradable Coating.
- Authors
Atray, Bharat; Malik, Ajay; Raj, Atul
- Abstract
In this paper, an attempt is made to investigate the performance of Al-SI/40 polyester abradable coating under the sliding condition. The abradable coating is produced by using a High Velocity Oxygen Fuel (HVOF) thermal spray process. The specimen preparation and the experimentation are carried out according to the ASTM G99 standards. Wear tests are performed using a pin-on-disc type wear tester within the load range 20-70 N, sliding speed range 0.2-2 m/s and sliding distance 1000-5000m. Splat tips on the contact surface are responsible for high wear rates at low speeds and high loads. Wear rates of the coating decreased with increasing sliding speed and increased with increasing load. The optimum combination of parameters and their levels for obtaining minimum wear rate are also found using Design of Experiment (DOE) technique. The obtained results are shown in the form of graphs describing how the wear rate of the coating occurs. Further, in order to analyze the percentage contribution of different wears parameters, ANOVA is used. The results show that the sliding speed has the highest influence, i.e., 70.92%, and the load has 28.45% of contribution on the wear behavior.
- Publication
IUP Journal of Mechanical Engineering, 2014, Vol 7, Issue 3, p61
- ISSN
0974-6536
- Publication type
Academic Journal