Effect of metallization temperature on brazing joints of SiC ceramics and 2219 aluminum alloy
Effect of metallization temperature on brazing joints of SiC ceramics and 2219 aluminum alloy
复制标题
DOI：
10.1111/ijac.13914
复制
发表时间：
2021-09
影响因子：
2.1
通讯作者：
Peng Teng;Xianfen Li;P. Hua;Hao Liu;Guoping Wang
中科院分区：
文献类型：
--
作者：
Peng Teng;Xianfen Li;P. Hua;Hao Liu;Guoping Wang
研究了用Ag - Cu - Ti箔和Al基填充合金对2219铝合金和金属化SiC进行预金属化的两步工艺。研究了金属化SiC层的组成。分析了金属化温度对接头组织和力学性能的影响。钎焊过程表明，钎料和2219基体中的Al与Ag - Cu - Ti合金反应形成金属间化合物。在接头中检测到Al3Ti、Al2Ag和Al2Cu。Ti5Si3、TiC和ti3sic2化合物在Ti和SiC的反应层附近发现。随着金属化温度的升高，接头抗剪强度先升高后降低。预金属化温度为1000℃，保温时间为10 min时，接头抗剪强度达到16.0 MPa。
A two‐step process involving, the pre‐metallization of the SiC ceramic by Ag‐Cu‐Ti foil and the Al based filler alloy was developed to join 2219 aluminum alloy and the metallized SiC. The composition of metallized SiC layer was investigated. The effect of metallization temperature on the microstructure and mechanical properties of the joint was analyzed. The brazing process showed that Al from the brazing filler and 2219 substrate reacted with Ag‐Cu‐Ti alloy to form intermetallic compounds. Al3Ti, Al2Ag and Al2Cu were detected in the joint. Ti5Si3, TiC and Ti3SiC2compounds were found adjacent to the reaction layer of the Ti and SiC. With increasing of metallization temperature, the shear strength of joint first increased and then decreased. The joint shear strength reached 16.0 MPa when the pre‐metallization temperature reached 1000°C and holding time was 10 min.