Ni-Cr-Mo-Cu合金的高温氧化特性  

High-temperature oxidizability of Ni-Cr-Mo-Cu alloy

作　　者：杨瑞成[1] 吕学飞[1] 赵丽美[1] 王凯旋[1] 

机构地区：[1]兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室

出　　处：《兰州理工大学学报》2006年第6期16-19,共4页Journal of Lanzhou University of Technology

基　　金：甘肃省有色金属新材料重点实验室基金(SKL05011)

摘　　要：运用静态等温氧化法研究了自制Ni-Cr-Mo-Cu耐蚀合金在600、800、1 000℃下的氧化特性,采用X射线衍射对氧化层进行了相的分析,并用电子显微镜对氧化层形貌进行观察.结果表明,Ni-Cr-Mo-Cu耐蚀合金氧化时先发生选择性氧化生成Cr2O3,随后发生分层氧化生成NiO和NiCr2O4,在高温长时间下Ni-Cr-Mo-Cu耐蚀合金表现出较不锈钢更为优越的抗氧化性能.The oxidizability of home-made corrosion-resistant nickel-base alloy at temperature of 600.800 and 1 000℃ was studied by using static isothermal oxidation method. Phase analysis and morphological observation of oxidation coating were conducted with XRD and electron microscope. The results showed that, at the beginning, the oxidation is selective and only Cr2O3 was formed. Then NiO and NiCr2O4 were formed with lamellated oxidation. Corrosion-resistant Ni-Cr-Mo-Cu alloy exhibited better oxidation resistance than that of stainless steel at high temperature and in long duration.

关 键 词：高温氧化 氧化机理 氧化速度 

分 类 号：TG133.4[一般工业技术—材料科学与工程] TG174.2[金属学及工艺—合金]