22Ti-78Si高温共晶钎料对SiC陶瓷的钎焊连接

doi:10.3724/SP.J.1077.2011.01314

无机材料学报 ›› 2011, Vol. 26 ›› Issue (12): 1314-1318.DOI: 10.3724/SP.J.1077.2011.01314 CSTR: 32189.14.SP.J.1077.2011.01314

22Ti-78Si高温共晶钎料对SiC陶瓷的钎焊连接

李家科¹, 刘磊², 刘欣¹

(1. 景德镇陶瓷学院材料科学与工程学院, 景德镇 333001; 2. 上海交通大学金属基复合材料国家重点实验室, 200240)

收稿日期:2011-01-06 修回日期:2011-03-06 出版日期:2011-12-20 网络出版日期:2011-11-11

Joining of SiC Ceramic by 22Ti-78Si High-temperature Eutectic Brazing Alloy

LI Jia-Ke¹, LIU Lei², LIU Xin¹

(1. School of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333001, China; 2. State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China)

Received:2011-01-06 Revised:2011-03-06 Published:2011-12-20 Online:2011-11-11

摘要/Abstract

摘要： 利用非自耗电弧熔融技术制备的22Ti-78Si (wt%)高温共晶钎料实现SiC陶瓷连接. 采用SEM、材料试验机研究了工艺参数对钎焊接头的组织结构、强度和断口形貌的影响规律. 结果表明: 在钎焊温度1380~1420℃、保温时间5~20min、钎料厚度50~200 μm条件下, 均能实现SiC陶瓷连接, 在1400℃、保温时间10min和钎料厚度100μm的条件下, SiC/22Ti-78Si/SiC接头剪切强度最大值可达125MPa.

关键词: 钎料, SiC陶瓷, 剪切强度, 组织结构, 断口形貌

Abstract: SiC ceramic was joined using 22Ti-78Si (wt%) brazing alloy which was prepared by the non-consumable arc-melting technology. The effects of brazing parameters on the microstructures and the fracture morphologies of the brazed joints were investigated by SEM. The mechanical properties of the brazed joints were measured by a universal mechanical testing machine. The results show that SiC ceramic is successfully joined in a proper condition, brazing temperature of 1380-1420℃, soaking time of 5?20min and the brazing alloy thickness of 50-200μm. The maximum shear strength of the brazed joint reaches 125 MPa at brazing temperature of 1400℃, soaking time of 10min and the brazing alloy thickness of 100μm.

Key words: brazing alloy, SiC ceramic, shear strength, microstructures, fracture morphology

中图分类号:

TQ174

李家科, 刘磊, 刘欣. 22Ti-78Si高温共晶钎料对SiC陶瓷的钎焊连接[J]. 无机材料学报, 2011, 26(12): 1314-1318.

LI Jia-Ke, LIU Lei, LIU Xin. Joining of SiC Ceramic by 22Ti-78Si High-temperature Eutectic Brazing Alloy[J]. Journal of Inorganic Materials, 2011, 26(12): 1314-1318.

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22Ti-78Si高温共晶钎料对SiC陶瓷的钎焊连接

Joining of SiC Ceramic by 22Ti-78Si High-temperature Eutectic Brazing Alloy

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