粉末冶金技术2025，Vol.43Issue(1)：42-51,10.DOI:10.19591/j.cnki.cn11-1974/tf.2022100006
压制力对银基触点材料物理和电接触性能的影响
Effect of pressing force on physical and electrical contact properties of silver-based contact materials
韩鑫磊 1范玉卓 1梁滢雪 1陈良玉 1彭一洋 1李桂景2
作者信息
- 1. 石家庄铁道大学工程力学系,石家庄 050043
- 2. 石家庄铁道大学工程力学系,石家庄 050043||河北省智能材料力学协同创新中心,石家庄 050043||河北省智能材料结构力学重点实验室,石家庄 050043
- 折叠
摘要
Abstract
Ag/SnO2,Ag/ZnO,Ag/Ni,and Ag/W silver-based contact materials were prepared by powder metallurgy method.The effects of pressing force on the physical and electrical contact properties of the different silver-based contact materials were systematically studied.The results show that the relative density of the Ag/SnO2 and Ag/ZnO materials significantly increases with the increase of pressing force,while the relative density of the Ag/Ni and Ag/W alloys obviously decreases.When the pressing force reaches 600 MPa,the electrical conductivity of the Ag/SnO2 materials can be increased from 35.2%IACS to 52.6%IACS.The electrical contact properties of the silver-based contact materials are greatly affected by pressing force.The Ag/SnO2 and Ag/ZnO materials prepared under 600 MPa show the lower arc energy and contact resistance.Especially,the Ag/ZnO materials exhibit the best arc erosion resistance,and the contact resistance is less affected by pressing force.Although the conductivity of the Ag/W alloys is up to 93.0%IACS,the anode mass loss is great after arc erosion,the cathode surface is rough,the obvious cracks appear,and the contact resistance is greatly affected by the pressing force.In contrast,the mass loss of the Ag/Ni alloys is lower,which mainly occurs at the cathode,showing the better arc erosion resistance.关键词
银基触点材料/粉末冶金/压制力/相对密度/接触电阻/燃弧能量Key words
silver-based contact materials/powder metallurgy/pressing force/relative density/contact resistance/arc energy分类
通用工业技术引用本文复制引用
韩鑫磊,范玉卓,梁滢雪,陈良玉,彭一洋,李桂景..压制力对银基触点材料物理和电接触性能的影响[J].粉末冶金技术,2025,43(1):42-51,10.
