| || Effects of Temperature on Tribological Properties of Al2O3-TiO2 Coating
Author : Narulkar, V.V.;Prakash, S.;Chandra, K.
Source : Defence Science Journal ; Vol:58(4) ; 2008 ; pp 582-587
Subject : 620.1 Material Science and Technology;669 Metallurgy
Keywords : Material processing;Plasma spraying;Microstructures
Abstract : The Al2O3-TiO2 coating for turbine blades is being used since long. During the last decades, a large number of papers have been published, but work on property assessment of Al2O3-TiO2 coating on rotating component from tribological point of view is very less. This paper assesses the wear behaviour of Al2O3-TiO2 coating on inconel 601. The Al2O3-TiO2 coating on inconel 601 is deposited by plasma spray process. The SEM results show that above 300 oC, the friction coefficient decreases due to softening of coating material. The wear rate increases with increase in temperature. The coating showed brittle fracture at higher temperature. Other test results have shown the drastic changes in property due to load and temperature.