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| Ag-GNPs 新型电接触材料的制备及其电接触行为 |
| Fabrication and Arc Erosion Behavior ofAg-GNPs as New Electrical Contact Materials |
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| DOI： |
| 中文关键词: 石墨烯纳米片 Ag-GNPs 电接触材料 电弧侵蚀 屈服强度 |
| 英文关键词: graphene nanoplates Ag-GNPs electrical contact material arc erosion yield strength |
| 基金项目: |
| Author Name | Affiliation | | WANG Song | State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Kunming Institute of Precious Metals, Kunming 650106, China | | XIE Ming | State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Kunming Institute of Precious Metals, Kunming 650106, China | | CHEN Jialin | State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Kunming Institute of Precious Metals, Kunming 650106, China | | ZHANG Jiming | State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Kunming Institute of Precious Metals, Kunming 650106, China | | LI Aikun | State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Kunming Institute of Precious Metals, Kunming 650106, China | | HU Jieqiong | State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Kunming Institute of Precious Metals, Kunming 650106, China | | WANG Saibei | State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Kunming Institute of Precious Metals, Kunming 650106, China |
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| 中文摘要: |
| 为阐明Ag-GNPs新型电接触材料的电弧侵蚀行为，采用粉末冶金技术制备了石墨烯纳米片质量分数为0.5%~2.0%的Ag-GNPs新型电接触材料，研究了Ag-GNPs材料的微观结构、密度、电导率，分析了材料电弧侵蚀后的质量损耗、表面形貌，探讨了材料的电弧侵蚀机制。实验结果表明，高含量的GNPs降低Ag-GNPs材料的密度和导电率，但可显著增加其力学性能。GNPs的密度与含量对熔池表面元素再分布有重要影响。高含量的GNPs更容易团聚和降低Ag-GNPs材料的电接触性能，特别是当Ag-GNPs材料中GNPs含量超过1.5%。GNPs含量为1.5%的Ag-GNPs电接触材料具有最佳的抗电弧侵蚀性能，DC 25/15A条件下电弧侵蚀后其质量损耗最低、侵蚀坑最浅。 |
| 英文摘要: |
| In order to clarify the arc erosion behavior of Ag-GNPs as new electrical contact materials, Ag-GNPs with a different content of graphene nanoplate from 0.5% to 2.0% were prepared by powder metallurgy. The microstructure, density, and electrical conductivity were investigated in detail. The weight loss and surface morphologies of Ag-GNPs after arc erosion were characterized, and the arc erosion mechanism was discussed. The experimental results showed that high GNPs content lowered the densities and electrical conductivity of Ag-GNPs but significantly enhanced their mechanical performance. The density and content of GNPs played important role in the element redistribution on the molten pool of the Ag-GNPs. When GNPs content was high, they would gather on the surface and lead to a decline in the electrical contact performance of Ag-GNPs, and a serious decline was observed for Ag-GNPs with a GNPs content of more than 1.5%. However such Ag-GNPs presented the best anti-arc erosion performance, as evidenced by the lowest weight loss and shallowest arc erosion pits after arc erosion under DC 25V/15A. |
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