任蓓蕾,缪强,梁文萍,潘晓扬,陆海峰,胡荣耀,夏金姣

• 1:南京航空航天大学材料科学与技术学院

摘要(Abstract)：

利用双辉等离子表面冶金技术,在不同温度下对Ti_2AlNb合金进行渗碳处理。研究不同渗碳温度对Ti_2AlNb合金微观组织、显微硬度及摩擦磨损性能的影响。结果表明:整个渗碳层包括石墨沉积层、硬质碳化物层和扩散层,其厚度随渗碳温度的增加而增加。从硬质碳化物层到基体,试样硬度呈梯度递减规律;且工艺温度越高,渗碳硬度曲线越平缓。在970、1050和1100℃制备的渗碳试样的比磨损率分别是基体的1/14.67,1/14.96和1/16.64,其平均摩擦因数均小于基体,表现出良好的减摩和耐磨性能,磨损机制为磨粒磨损。

关键词(KeyWords)： Ti_2AlNb合金;双辉等离子表面冶金;渗碳;耐磨性

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51474131);; 南京航空航天大学博士学位论文创新与创优基金(BCXJ14-11);; 江苏高校优势学科建设工程

作者(Author): 任蓓蕾,缪强,梁文萍,潘晓扬,陆海峰,胡荣耀,夏金姣

DOI: 10.13289/j.issn.1009-6264.2016.09.027

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