摘要: |
为实现可展开式热辐射器产品中环路热管(2A14铝合金)与外贴热管(6063铝合金)低温钎焊(80℃),研制新型的低温钎料,经过一系列试验后确定新型超低温钎料为镓基钎料(Ga60Cu40),试验结果表明,镓基钎料在镀有Ag或Cu的铝合金表面具有良好的润湿性,并进行了相应的工艺试验,接头的剪切强度性能和二次重熔温度满足可展开式热辐射器的要求。 |
关键词: 热管;镓基钎料;低温钎焊 |
基金项目: |
|
Study on Low-temperature Filler Metel and Brazing Technology of Dissimilar Aluminium Alloy |
Liu Xin Xue Zhongming Jiang Kun
|
Beijing Spacecrafts,Beijing 100094
|
Abstract: |
In order to realize the low-temperature(80℃)brazing between loop heat-pipes(2A14 aluminium alloy) and external heat-pipes(6063 aluminium alloy)in extensible heat-radiator,the new low-temperature filler metal is developed. After a series of experiments,a new Ga-based low-temperature filler metal(Ga60Cu40)is determined.The experiment results show that,the Ga-based filler metal has well wettability on the surface of aluminium alloy which electroplated Ag or Cu.After technics experiments,the shear strength and secondary remelting temperature of the soldering joints can well satisfy the demands of extensible heat-radiator. |
Key words: heat-pipes;Ga-based filler metal;low-temperature brazing |