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| Effects of 4004 Solder on Compatibility of Cold Plate and Silicate System Glycol Coolant |
| Received:August 16, 2018 Revised:May 25, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/ issn.1672-9242.2019.05.000 |
| KeyWord:aluminum silicon and magnesium alloy 4004 cold plate silicate system glycol coolant compatibility |
| Author | Institution |
| LIU Xiang |
National Key Laboratory of Human Factors Engineering, China Astronaut Research and Training Center, Beijing , China |
| GAO Feng |
National Key Laboratory of Human Factors Engineering, China Astronaut Research and Training Center, Beijing , China |
| LIU Xiang-yang |
National Key Laboratory of Human Factors Engineering, China Astronaut Research and Training Center, Beijing , China |
| ZHAO Pi-sheng |
National Key Laboratory of Human Factors Engineering, China Astronaut Research and Training Center, Beijing , China |
| DONG Wen-ping |
National Key Laboratory of Human Factors Engineering, China Astronaut Research and Training Center, Beijing , China |
| LI Ying-bin |
National Key Laboratory of Human Factors Engineering, China Astronaut Research and Training Center, Beijing , China |
| ZHU Yan-fang |
National Key Laboratory of Human Factors Engineering, China Astronaut Research and Training Center, Beijing , China |
| ZHANG Chun-yan |
National Key Laboratory of Human Factors Engineering, China Astronaut Research and Training Center, Beijing , China |
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| Abstract: |
| 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. |
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