航空材料学报2012，Vol.32Issue(1)：35-40,6.DOI:10.3969/j.issn.1005-5053.2012.1.008
SiO2f/SiO2复合材料自身及其与铜、不锈钢的钎焊
Brazing of SiO2f/SiO2 , SiO2f/SiO2/Cu and SiO2f/SiO2/stainless steel joints
陈波 1熊华平 1毛唯 1程耀永1
作者信息
- 1. 北京航空材料研究院焊接及锻压工艺研究室,北京100095
- 折叠
摘要
Abstract
Brazing of SiO2f/SiO2 , SiO2(/SiO2/Cu and SiO2,/SiO2/1Crl8Ni9Ti joints was carried out at 880℃ for 10 min using Ag-Cu-Ti brazing foils and sound joints were achieved. The results showed that a thin diffusion layer was formed close to the interface of SiO2f/ SiO2, matrixes in the three kinds of joints. Elements Ti and O were enriched and TiO2 phase was formed in the diffusion layer. Additionally , in the three brazing seams, Ag-Cu eutectic structures were formed, being made up of white Ag-based solid solution and grey Cu-based solid solution. The shear strengths of SiO2f/SiO2/Cu and SiO2f/SiO2/lCrl8Ni9Ti joints were 12.4 Mpa and 18.4 Mpa respectively. One of the key reasons for the low joint strengths is the large residual thermal stress caused by the mismatch of thermal expansion coefficient between the SiO2f/SiO2 composite and the metals to be joined.关键词
SiO2f/SiO2复合材料/AgCuTi/钎焊/Cu/1Cr18Ni9TiKey words
SiO2t/SiO2 composite/ AgCuTi/ brazing/ Cu/ 1Crl8Ni9Ti分类
矿业与冶金引用本文复制引用
陈波,熊华平,毛唯,程耀永..SiO2f/SiO2复合材料自身及其与铜、不锈钢的钎焊[J].航空材料学报,2012,32(1):35-40,6.
