METHODS OF DEPOSITING COATINGS WITH GAMMA-NI + GAMMA'NI3AL PHASE CONSTITUTION

摘要

A method including depositing a powder on a substrate to form a first layer thereon, wherein the layer includes a Pt group metal, Si and reactive element selected from the group consisting of Hf, Y, La, Ce, Zr, and combinations thereof. Deposited on the first layer is a second layer including Al to form a coating with a γ-Ni + -γ'Ni3Al phase constitution. In preferred embodiments, the second layer is deposited with an organo halocarbon activator.