研究表明,在高温合金中加入Y、La、Ce等稀土元素,可以抑制合金中的S和合金工作环境中的S对表面防护涂层的破坏作用,从而大大提高合金的抗氧化性能,这对于要求工作寿命长达上万小时的燃气轮机涡轮叶片是有特别重要的意义。加入Y等元素,可与S结合生成稳定的YS、Y2O2S等相,但是过 The research shows that the addition of rare earth elements such as Y, La and Ce into the superalloy can restrain the destructive effect of S and the alloy S in the working environment on the surface protective coating, thereby greatly improving the oxidation resistance of the alloy. Gas turbine turbine blades, which require operating lives up to tens of thousands of hours, are of particular importance. Join Y and other elements, can be combined with S to generate stable YS, Y2O2S other phase, but too