铝硅镁4004钎料对冷板与硅酸盐体系乙二醇冷却液腐蚀相容性的影响研究  

Effects of 4004 Solder on Compatibility of Cold Plate and Silicate System Glycol Coolant

作　　者：刘相[1] 高峰[1] 刘向阳[1] 赵丕盛[1] 董文平[1] 李英斌[1] 朱艳芳 张春艳 LIU Xiang;GAO Feng;LIU Xiang-yang;ZHAO Pi-sheng;DONG Wen-ping;LI Ying-bin;ZHU Yan-fang;ZHANG Chun-yan(National Key Laboratory of Human Factors Engineering,China Astronaut Research and Training Center,Beijing 100094,China)

机构地区：[1]人因工程国防科技重点实验室中国航天员科研训练中心,北京100094

出　　处：《装备环境工程》2019年第5期30-37,共8页Equipment Environmental Engineering

摘　　要：目的研究不同钎料对冷板与硅酸盐体系乙二醇冷却液的腐蚀相容性影响。方法以铝合金3A21为基材,以不同铝硅镁箔4004为钎料,采用真空焊接的方法制备不同的铝合金冷板,将乙二醇冷却液加注在冷板中,在40℃开展压力测试。利用金相分析、扫描电子显微镜对冷板内部微观形貌和结构进行研究。结果铝硅镁箔4004中硅元素质量分数为13.29%时,焊接的冷板在3个月时间范围压力升高800 kPa;而硅元素质量分数为10.99%时,冷板在同样的条件下压力未见明显改变。两种冷板在焊接部位和翅片部位显示出截然不同的硅偏析现象。结论这种硅偏析现象可能导致了冷板在乙二醇冷却液不同的产气现象。Objective To study the effects of different solders on the corrosion compatibility of cold plate and silicate system glycol coolant.Methods Different aluminum alloy cold plates were prepared by vacuum welding with aluminum alloy 3A21 as base material and different aluminum silicon and magnesium foil 4004 as brazing filler metal.The glycol was added to the cold plate to carry out pressure test at 40℃.The microstructure of the cold plate was studied by means of metallographic analysis and scanning electron microscope.Results When the content of silicon element in aluminum silicon and magnesium foil 4004 was 13.29%,the pressure of the welded cold plate increased by 800 kPa in 3 months.While the silicon content was 10.99%,the pressure of the cold plate did not change obviously under the same condition.And the two cold plates showed very different silicon segregation at the welding part and the fin part.Conclusion The silicon segregation may result in different gas production of the cold plate in ethylene glycol coolant.

关 键 词：铝硅镁合金 4004 冷板 硅酸盐 乙二醇冷却液 相容性 

分 类 号：E233[军事—军事理论]