文章摘要
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
  
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:
作者单位
王松 State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Kunming Institute of Precious Metals, Kunming 650106, China 
谢明 State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Kunming Institute of Precious Metals, Kunming 650106, China 
陈家林 State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Kunming Institute of Precious Metals, Kunming 650106, China 
张吉明 State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Kunming Institute of Precious Metals, Kunming 650106, China 
李爱坤 State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Kunming Institute of Precious Metals, Kunming 650106, China 
胡洁琼 State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Kunming Institute of Precious Metals, Kunming 650106, China 
王塞北 State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Kunming Institute of Precious Metals, Kunming 650106, China 
摘要点击次数: 187
全文下载次数: 905
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.
查看全文   查看/发表评论  下载PDF阅读器
关闭