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.
出处
《兰州理工大学学报》
CAS
北大核心
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)
关键词
高温氧化
氧化机理
氧化速度
high-temperature oxidation
oxidation mechanism
oxidation rate
