|
| Electrical Life Performance of AgCuONiO Electrical Contact Materials Applied in Aerospace Relay |
| |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2023.03.004 |
| KeyWord:electrical contact material aerospace relay alloy internal oxidation method AgCuONiO AgCdO electrical service life |
| Author | Institution |
| QIAO Zheng-yang |
Guizhou Space Appliance Co., Ltd., Guizhou Guiyang , China |
| LIU Zhen-wu |
School of Materials Science and Engineering, Zhejiang University, Zhejiang Hangzhou , China |
| LI Jiang |
China Academy of Space Technology, Beijing , China |
| LIU Ben |
Guizhou Space Appliance Co., Ltd., Guizhou Guiyang , China |
| ZHANG Chao-quan |
Guizhou Space Appliance Co., Ltd., Guizhou Guiyang , China |
| DU Kai-xiang |
School of Materials Science and Engineering, Zhejiang University, Zhejiang Hangzhou , China |
| SHEN Tao |
School of Materials Science and Engineering, Zhejiang University, Zhejiang Hangzhou , China |
| WU Xin-he |
Wenzhou Hongfeng Electrical Alloy Co., Ltd., Zhejiang Wenzhou , China |
|
| Hits: |
| Download times: |
| Abstract: |
| The work aims to prepare a high-performance and environmentally friendly electrical contact material that can replace AgCdO to improve the reliability of aerospace relays. The AgCuONiO electrical contact material was prepared by the alloy internal oxidation method, and compared with the commercial AgCdO material. The electrical life simulation experiment was conducted to evaluate the electrical life performance of the two kinds of materials. The results showed that the total mass loss of the AgCuONiO material was 0.000 88 g, and its average arcing time, arcing energy, welding force, bounce cycles, bounce time and bounce energy were 422 2 μs, 694 mJ, 0.049 N, 1.799 times, 592.999 μs and 63.892 mJ respectively, which were all larger than those of the commercial AgCdO material, but its contact resistance was much lower and stabler. And its failure mode was failure of arc segmentation, while that of the commercial AgCdO electrical contact material was adhesion failure. The electrical service life of the AgCuONiO material was 44 073 times, which was about triple that of the AgCdO material, so it can significantly improve the reliability of aerospace relays. Although some electrical life service performances of the AgCuONiO electrical contact material are not as good as those of the commercial AgCdO electrical contact material, its electrical service life is significantly stronger than that of the commercial AgCdO electrical contact material. Hence it can be used as one of the better candidate materials to replace AgCdO for aerospace relays with longer service life. |
| Close |
|
|
|