杨红玉,李蕊轩,张红前,王振霞,刘小萍,于盛旺,贺志勇

• 1:太原理工大学表面工程研究所

摘要(Abstract)：

采用双辉等离子表面合金化技术在Ti6Al4V合金表面制备镍合金层,采用SEM、GDOES以及XRD对比研究了温度和放电气压对镍合金层结构、成分分布和相组成的影响。结果表明:镍合金层由3层结构组成,从外向内依次是单质镍的镍沉积层,主要化合物为Ni3Ti、Ti2Ni、NiTi、AlNi3的富镍合金层和贫镍合金层。不同温度和气压条件下,合金化试样表面呈现"胞状凸起"形貌。随着温度升高,表面晶粒长大,孔洞减少,间隙减小;富镍合金层和贫镍合金层厚度增加,镍沉积层厚度先增后减。随着气压增大,表面晶粒变细,孔洞增多,间隙增加;镍沉积层和富镍合金层厚度减少,贫镍合金层厚度先增后减。基体晶粒长大的临界温度存在于900~930℃之间。

关键词(KeyWords)： 等离子体表面合金化;Ti6Al4V合金;温度;放电气压;镍合金层

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51071106);; 山西省自然科学基金(2012011021-4,2013011012-4);; 山西省回国留学人员科研资助项目(2013-048)

作者(Author): 杨红玉,李蕊轩,张红前,王振霞,刘小萍,于盛旺,贺志勇

DOI: 10.13289/j.issn.1009-6264.2014.10.030

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