超声波及钎料成分对氧化铝/铜钎焊效果的影响
Effect of Ultrasonic Wave and Filler Composition on Brazing of Alumina and Copper
苏 光， 杜 伟
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作者单位：（河南机电高等专科学校，河南 新乡 453002）
中文关键字：氧化铝(Al2O3)； 钎焊； 超声波； 剪切应力
英文关键字：alumina; brazing; ultrasonic waves; shear stress
中文摘要：焊接前采用超声波浴去除氧化铝表面杂物，然后利用超声波振动使钎料润湿焊缝将氧化铝与铜进行钎焊连接。所用钎料为含铝量(wAl)分别为0%、5%、10%的Zn-Al合金和含锡量(wSn)分别为0%、30%、60%、91%的Zn-Sn合金。通过测量接头强度、硬度和分析接头界面的微观组织形态，结果表明，超声波可以加快钎料的润湿性，并可以通过改变钎料中成分配比来改善焊件连接性能。
英文摘要：The surface oxides were removed by ultrasonic bath, then, the alumina and copper were connected under ultrasonic vibration. The used filler was Zn-Al alloy and Zn-Sn alloy. The weight percent of aluminum in the filler was 0%, 5%, 10%, respectively. The mass percent of tin in the filler was 0%, 30%, 60% and 91%, respectively. The joining mechanism was investigated by measuring the joining strength, hardness and analyzing the microstructure at the interface of the joint. The shear strength and microstructure of the welded joint strongly depend on the filler composition. The test shows that ultrasound can accelerate the wettability, the connection property of the weldment can be improved by changing the composition ratio in filler metal.