西安工程大学学报2025，Vol.39Issue(5)：8-16,9.DOI:10.13338/j.issn.1674-649x.2025.05.002
La掺杂对Ag/SnO2电接触材料性能的影响
Effect of La doping on the properties of Ag/SnO2 contact materials
摘要
Abstract
In order to investigate the influence of La doping amount on the arc erosion resistance of Ag/SnO2 contact material,Ag/SnO2 and La-doped Ag/SnO2 contact materials with different La doping amounts were prepared.The physical properties and arc erosion resistance of the pre-pared contact materials were tested.Results showed that with the increase of La element addition amount,the density and hardness of the La-doped Ag/SnO2 contact materials first increase and then decrease,the resistance first decreases and then increases,and the mass loss under arc ero-sion action first decreases and then increases.When the La/Sn molar ratio reaches 0.25,the densi-ty and hardness of the material both reach the highest,the resistivity reaches the lowest,and the mass loss of contact material under arc erosion action is the least.Compared to Ag/SnO2 contact material,when the La/Sn molar ratio is 0.25,the density and hardness of La-doped Ag/SnO2 con-tact material increase by 1.19%and 5.26%,respectively,the resistivity decreases by 4.67%,and the mass loss after arc erosion decreases by 42.00%.This indicates that moderate La doping can enhance the interfacial bonding strength between Ag and doped SnO2,thereby significantly im-proving the arc erosion resistance of Ag/SnO2 contact material.However,excessive La doping can actually reduce the arc erosion resistance of La-doped Ag/SnO2 contact material.关键词
Ag/SnO2电接触材料/La掺杂/掺杂量/耐电弧烧蚀性能/影响机理Key words
Ag/SnO2 contact material/La-doped/doping amount/arc erosion resistance/influ-encing mechanism分类
矿业与冶金引用本文复制引用
侯海云,徐智超,徐佳乐,张梦娇,方晨羽,陈苏醒,刘松涛..La掺杂对Ag/SnO2电接触材料性能的影响[J].西安工程大学学报,2025,39(5):8-16,9.基金项目
中国纺织工业联合会科技指导项目(2024026) （2024026）
陕西省自然科学基础研究计划项目(2024JC-YBMS-083) （2024JC-YBMS-083）
