High-temperature oxidation behavior of minor Hf doped NiAl alloy in dry and humid atmospheres
作者： Kai Yan , Hongbo Guo , Shengkai Gong
DOI: 10.1016/J.CORSCI.2013.06.017
关键词:
摘要: Abstract Oxidation behavior of NiAl and 0.05 at.% Hf doped alloys were investigated at 1100 °C in dry humid atmospheres. doping significantly improved the cyclic oxidation resistance. Water vapour promoted formation voids scale/alloy interface accelerated scale spallation. Also, water had effect on phase transformation from θ- to α-Al 2 O 3 initial stage. In atmosphere, more segregated form oxide pegs. Pre-oxidation process + Ar could compromise atmosphere kinetics alloys.
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