Microstructure and Properties of Reaction Plasma Sprayed Ni3Al Coating
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Abstract:
In order to meet the need of high temperature thermal protection, Ni3Al coating was prepared by plasmas spraying technology. The microstructure, bond strength, thermal shock and anti-oxidation properties of the coating were studied. The results show that due to the full contact between the nickel powder and the aluminum powder, the Ni3Al intermetallic compound are completely formed during plasma spraying and a lot of heat is released. The coating and the matrix are of micro metallurgic bonding. The coating shows high thermal shock and anti-oxidation properties and its bond strength is 30% to 40% higher than that of the commercial NiAl coating
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[Wang Wenming, Du Lingzhong, Zhang Weigang, Yang Bin, Xu Cunguan. Microstructure and Properties of Reaction Plasma Sprayed Ni3Al Coating[J]. Rare Metal Materials and Engineering,2011,40(3):555~558.] DOI：[doi]