Ni和NiO添加剂对AgSnO_(2)复合材料电接触性能的影响  

Effect of Ni and NiO Additives on the Electrical Contact Property of AgSnO_(2) Composites

作　　者：范玉卓 韩鑫磊 陈良玉 彭一洋 梁滢雪 李桂景 FAN Yuzhuo;HAN Xinlei;CHEN Liangyu;PENG Yiyang;LIANG Yingxue;LI Guijing(Department of Engineering Mechanics,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;Hebei Collaborative Innovation Center for Mechanics of Intelligent Materials,Shijiazhuang 050043,China;Hebei Key Laboratory for Mechanics of Intelligent Materials and Structures,Shijiazhuang 050043,China)

机构地区：[1]石家庄铁道大学工程力学系,河北石家庄050043 [2]河北省智能材料力学协同创新中心,河北石家庄050043 [3]河北省智能材料结构力学重点实验室,河北石家庄050043

出　　处：《电工材料》2025年第2期17-21,共5页Electrical Engineering Materials

基　　金：国家自然科学基金(12272244);河北省大学生科技创新能力培育专项(22E50106D);大学生创新创业训练计划项目(202210107272)。

摘　　要：采用粉末冶金法制备了AgSnO_(2)复合材料,系统研究了金属Ni和NiO添加剂对材料物理性能和电接触性能的影响,借助扫描电子显微镜(SEM)对开断5000次后的电极表面进行表征。结果表明:添加0.5%的NiO使Ag/SnO_(2)复合材料的导电率从52.56%IACS增加到57.30%IACS,而添加相同质量分数的金属Ni则造成导电率下降。NiO较Ni添加剂更有利于改善AgSnO_(2)材料的电接触性能,在一定程度上能降低燃弧能量和接触电阻,质量损失也明显减少。本实验条件下制备的AgSnO_(2)复合材料,添加0.5%的金属Ni尽管能显著降低材料的质量损失,但会引起燃弧能量和接触电阻明显增加。与金属Ni相比,NiO添加剂能抑制AgSnO_(2)电极表面气孔和裂纹的萌生与扩展。AgSnO_(2) composites were prepared by powder metallurgy method,and the effects of metal Ni and NiO additives on the physical and electrical contact properties were systematically studied.The surface of the electrode after 5000 breaks was characterized by scanning electron microscopy(SEM).The results show that electrical conductivity of AgSnO_(2) composite increased from 52.56%IACS to 57.30%IACS with the addition of 0.5%NiO,while the electrical conductivity decreased with the same weight of Ni additive.Compared with metal Ni additive,NiO is more beneficial to improve the electrical contact performance of AgSnO_(2) material,and it can reduce the arc burning energy and contact resistance to a certain extent.The mass loss was also significantly reduced.Although the mass loss of the AgSnO_(2) composite was significantly reduced by adding 0.5%Ni,the arc burning energy and contact resistance were significantly increased.Compared with metal Ni,NiO can inhibit the initiation and propagation of pores and cracks on the surface of AgSnO_(2) electrode.

关 键 词：AgSnO_(2)电接触材料 Ni添加剂 NiO添加剂 电接触性能 

分 类 号：TM201.4[一般工业技术—材料科学与工程]