摘要
通过高能球磨工艺制备了掺杂Cu/Sn O2电触头材料,采用XRD评估了Cu/Sn O2的混粉效果,利用SEM对电触头材料的微观形貌以及电弧烧蚀形貌进行了观察,测试了电触头材料的电导率和硬度,系统研究了混粉时间、烧结温度以及不同掺杂对Cu/Sn O2电触头材料的性能影响。结果表明:Cu/Sn O2混粉时间4h,850℃烧结的Cu/Sn O2电触头材料物理性能最佳,其电导率达到49.0%IACS,硬度达到122.0HV;添加La2O3的Cu/Sn O2电触头材料的电弧烧蚀轻微,具有良好的耐电弧烧蚀特性。
Cu/SnO2 electric contact material was prepared by high energy ball milling process. X-ray diffraction （XRD） was carried out to evaluate the effect of Cu/SnO2 mixed powder, and scanning electron microscope（SEM） was used to observe the micro morphology and the arc erosion morphology of electric contact material. Electrical conductivity and hardness of electrical contact materials were also tested. The effects of mixing time, sintering temperature and doping on the properties of Cu/SnO2 electric contact materials were also studied systematically. The results show that Cu/SnO2 electric contact materials have the best physical properties when Cu/SnO2 mixed for 4h and sintered at 850℃. The electrical conductivity is 49.0% IACS, and hardness is reached 122.0HV. The arc erosion of Cu/SnO2 electric contact material with La203 is slight, showing good resistance to arc erosion.
出处
《航空材料学报》
EI
CAS
CSCD
北大核心
2015年第6期60-64,共5页
Journal of Aeronautical Materials
基金
西安工程大学博士基金(BS13015)
