杨涵博,李彩月,张洁,陈晨,王晨露,章强

• 1:临沂大学材料科学与工程学院

摘要(Abstract)：

为了降低钎焊接头残余应力，采用AgCuTi-Cu-AgCuTi钎料对Al_2O_3陶瓷与316L不锈钢进行真空钎焊连接，分别研究了钎焊温度(820、850和880℃)及Cu箔厚度(0.05、0.1和0.2 mm)对Al_2O_3陶瓷/316L不锈钢钎焊接头组织和性能的影响。结果表明：当中间层Cu箔厚度为0.1 mm时，钎焊接头的组织为Al_2O_3/Cu_3Ti_3O+Ag(s, s)+Cu(s, s)+Cu_3Ti/Fe_2Ti/316L;随着钎焊温度升高(Cu箔厚度为0.1 mm),钎焊接头剪切强度出现先降低后升高的趋势，在880℃钎焊10 min保温后，接头组织分布较为均匀，剪切强度最大，为79.2 MPa。随着Cu箔厚度的增加(钎焊工艺为880℃保温10 min),促进了Cu-Ti金属间化合物的生成，Cu基固溶体增多，焊缝变宽，钎焊接头的组织较为均匀致密，剪切强度呈上升趋势，Cu箔厚度为0.2 mm时，接头的剪切强度最大，为148.8 MPa。与直接使用Ag-Cu-Ti钎料的钎焊接头相比(接头的剪切强度为54.3 MPa),采用Cu箔做中间层的钎焊接头的剪切强度明显更高。

关键词(KeyWords)： Al_2O_3陶瓷;316L不锈钢;真空钎焊;剪切强度;显微组织

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金青年基金(52105353);; 山东省自然科学基金青年基金(ZR2020QE176);; 临沂大学大学生创新创业项目(X202210452068)

作者(Author): 杨涵博,李彩月,张洁,陈晨,王晨露,章强

DOI: 10.13289/j.issn.1009-6264.2023-0356

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