Effects of Temperature on Tribological Properties of Al2O3-TiO2 Coating

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-TiO2coating on rotating component from tribological point of view is very less. This paper assessesthe wear behaviour of Al2O3-TiO2 coating on inconel 601. The Al2O3-TiO2 coating on inconel 601is deposited by plasma spray process. The SEM results show that above 300 oC, the frictioncoefficient decreases due to softening of coating material. The wear rate increases with increasein temperature. The coating showed brittle fracture at higher temperature. Other test results haveshown the drastic changes in property due to load and temperature.Defence Science Journal, 2008, 58(4), pp.582-587, DOI:http://dx.doi.org/10.14429/dsj.58.168