High temperature scaling of Ni-15Cu-5Al alloy in 1×105Pa pure oxygen①
来源期刊：中南大学学报(英文版)2004年第4期
论文作者：向军淮 牛焱 吴维tao
文章页码：348 - 352
Key words：Ni-rich alloy; high temperature oxidation; ternary alloy
Abstract: The oxidation of the ternary alloy Ni-15Cu-5Al in 1×105Pa pure oxygen at 700℃and 800℃was studied.The results show that the behavior of the Ni-rich alloy is similar to that of the binary Ni-Al alloy with the same Al content in the form of an external NiO layer coupled to the internal oxidation of aluminium. The presence of 15%(mole fraction) Cu cannot modify substantially the values of relevant parameters affecting the transition from the internal to the external oxidation of aluminium. The presence of 5%Al reduces the oxidation rate of the corresponding Ni-Cu alloy during the whole oxidation stages, though 5% Al is still insufficient to form protective external alumina scales.
