Ni-Cr-Mo-Cu合金的氧化动力学研究Oxidation kinetics of Ni-Cr-Mo-Cu corrosion resistant alloy
杨瑞成,靳赛特,吕学飞,赵丽美
摘要(Abstract):
运用静态等温氧化法研究了Ni-Cr-Mo-Cu镍基耐蚀合金在600、800和1000℃下的氧化特性,采用X射线衍射、扫描电子显微镜对氧化层进行了相结构和形貌的分析。结果表明:该合金的高温氧化动力学曲线近似呈立方抛物线规律,10h以后氧化过程主要受扩散控制,合金表面形成致密的氧化物薄膜,氧化物类型主要是Cr2O3和NiO、NiCr2O4。实验得到Ni-Cr-Mo-Cu耐蚀合金高温氧化速率常数为1.296×10-8exp(-Ea/RT),其表观活化能(Ea)为200.25kJ/mol,位于Cr2O3氧化层的活化能和NiO氧化层的活化能之间。
关键词(KeyWords): 金属氧化;镍基耐蚀合金;氧化动力学;活化能
基金项目(Foundation): 甘肃省有色金属新材料省部共建国家重点实验室基金(SKL05011)
作者(Author): 杨瑞成,靳赛特,吕学飞,赵丽美
参考文献(References):
- [1]杨瑞成,王晖,郑丽平,等.高性能Ni基耐蚀合金的特性和研究动向[J].材料导报,2001,15(11):21-23.YANG Rui-cheng,WANG Hui,ZHENG Li-ping,et al.Characteristics and research trends of high performance Ni-base corrosion resistant alloys[J].Material Review,2001,15(11):21-23.
- [2]YANG Rui-cheng,SHU Jun,CHEN Kui,et al.Research on valence electron structures and properties of Ni-based corrosion resistant alloy[J].Transaction ofNonferrous Metals Society of China,2007,16,84-87.
- [3]李云,袁超,郭建亭,等.铸造Ni基高温合金的氧化机理[J].东北大学学报(自然科学版),2003,24(1):75-78.LI Yun,YUAN Chao,GUO Jian-ting,et al.The oxidation kinetics of cast Ni-Base superalloy K35[J].Journal of Northeastern University(Natural Science),2003,24(1):75-78.
- [4]周春根,杨颖,宫声凯,等.Cr在Ti-Al-Cr合金抗高温氧化过程中的作用研究[J].航空学报,2001,22(1):73-77.
- [5]Otero E,Pardo A,Perosanz F J,et al.Surface modification of several steels after their exposure at high temperature to oxygen and sulfur mixtures[J].Surfaceand Coating Technology,1995,35(6):76-77.
- [6]Sukidi N,Koch C C,Liub C T.The Oxidation of Ni,Si-base alloys[J].Materials Science and Engineering A,1995,191:223-231.
- [7]揭晓华,向梅.5CrNiMo钢高温氧化特征[J].汽车研究与开发,1998,6(2):41-44.JIE Xiao-hua,XIANG Mei.Oxidation mechanism under high temperature for 5CrNiMo steel[J].Automobile Research&Developmenty,1998,6(2):41-44.
- [8]汪涛,祝美丽,鲁玉祥,等.固态反应动力学与热分析研究方法浅析[J].材料导报,2002,16(1):18-20.WANG Tao,ZHU Mei-li,LU Yu-xiang,et al.Introduction to thermokinetic methods for solid-state reaction[J].Material Review,2002,16(1):18-20.
- [9]肖纪美,曹楚南.材料腐蚀学原理[M].北京:化学工程出版社,2002:88-90.
- [10]李学锋.铬含量对两种Ni基合金涂层高温氧化行为的影响[J].表面技术,2004,33(6):37-39.LI Xue-feng.Influences of Cr content on oxidation behavior of two nickel-based alloy coating at high temperature[J].Surface Technology,2004,33(6):37-39.
文章评论(Comment):
|
||||||||||||||||||
|
||||||||||||||||||