Abstract
The cyclic oxidation behavior of a TiCrN coating deposited on a steel substrate was studied at 700, 800, 900 and 1000°C in atmospheric air, by repetitively exposing the specimen to thermal cycles of 2 hr-heating and subsequent quenching to room temperature. The coating displayed good cyclic oxidation resistance up to 800°C, with relatively small weight gains, but above 900°C, the coating displayed a drastic diminishment in oxidation resistance, accompanied by large weight gains. Cracks were observed particularly above 900°C throughout the oxide scale that consists of TiO2, Cr2O3 and/or Fe2O3.
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