OALib Journal期刊
ISSN: 2333-9721
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两种铝化物涂层在固态盐和水蒸气综合作用下的腐蚀行为
, PP. 8-11
Keywords: 铝化物涂层,固态盐,水蒸气,腐蚀
Abstract:
采用LP-CVD和粉末包埋技术在一种Ni基高温合金上分别制备了单渗铝扩散涂层和NiCr-CrAl扩散涂层,对比研究了3种材料在700℃盐和水蒸气综合作用下的腐蚀行为.结果表明,铸态合金表面生成了不具保护性的NiO;NiCr-CrAl涂层由于保护性的Cr2O3氧化膜的破坏以及气态产物的生成,使得涂层遭受到严重的腐蚀;单渗铝涂层表面生成了致密的、保护性Al2O3膜而表现出优异的抗腐蚀性能.
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