Structure and phase composition of complex refractory coating and of the reaction zone of interaction with single-crystal alloy ZhS36-VI after high-temperature holds

Abstract

A complex coating consisting of three layers, i.e., a gas-circulation coating and a two-layer ion-plasma coating with an internal Ni - Cr - Al - Ta - Re - Y layer and an external Al - Ni - Cr - Y layer for protecting single crystal turbine rotor blades from high-temperature oxidation is considered. The fine structure and the phase composition of the complex coating and of the reaction zone of interaction with single-crystal alloy ZhS36-VI after high-temperature holds in a range of 1050 - 1300 C for 1-1000 h are studied. © 2013 Springer Science+Business Media New York.