Ag/LaNixCo1-xO3触点材料的制备及电接触性能研究
Preparation and electrical contact performance of Ag/LaNixCo1-xO3
邵紫阳 1杨芳儿 1王大帅 1刘振武 2沈涛 2李跃 3郑晓华1
作者信息
- 1. 浙江工业大学 材料科学与工程学院,杭州 310014
- 2. 浙江大学 材料科学与工程学院,杭州 310058
- 3. 浙江大学 材料科学与工程学院,杭州 310058;浙江大学 温州研究院,浙江 温州 325036
- 折叠
摘要
本文运用溶胶-凝胶燃烧法合成了双钙钛矿型LaNixCo1-xO3(LNCO)纳米材料,利用粉末冶金和热挤压技术制备了相应的 Ag/LNCO 触点材料及元件样品.重点考察了不同 Ni、Co 含量对Ag/LNCO触点材料微观结构、物相组成、物理性能、力学性能及电寿命服役能力的影响,对其电弧侵蚀失效行为进行了研究,并与SnO2 粉体增强Ag基触点材料进行对比.结果表明:溶胶凝胶法合成的LNCO纳米颗粒粒径为 20-30 nm,经粉末冶金工艺制备的Ag/LaNi0.5Co0.5O3触点材料电学性能和电寿命都优于 Ag/SnO2 触点材料,其电阻率低至 2.10 μΩ∙cm,电寿命性能达到 51287 次.表明Ag/LaNi0.5Co0.5O3触点材料性能较佳,是一种可以取代Ag/CdO的新型触点材料.
Abstract
The double-perovskite LaNixCo1-xO3(LNCO)nanomaterials were synthesized by using sol-gel combustion method,and Ag/LNCO electrical contact materials and their component samples were fabricated by powder metallurgy combined with hot extrusion technique.The effects of different Ni and Co contents on microstructure,phase composition,physical properties,mechanical properties and electrical life service capability of the Ag/LNCO contact materials were investigated,followed by a preliminary investigation on their arc erosion failure behavior in comparison with that of the commercially available SnO2 powder-reinforced Ag-based contact materials.The results show that the LaNixCo1-xO3 nanomaterials with a size of 20～30 nm can be synthesized by the sol-gel method.With a resistivity of 2.10 μΩ∙cm and an electrical life service capability of 51287 cycles,Ag/LaNi0.5Co0.5O3 prepared by powder metallurgy process displayed better electrical contact performance than Ag/SnO2 materials.Therefore,Ag/LaNi0.5Co0.5O3 is another potential substitute for traditional Ag/CdO.
关键词
触点材料/力学性能/电弧侵蚀/电寿命/La2Ni1-xCoxO3Key words
electrical contact materials/mechanical property/arc erosion/electrical life service capability/La2Ni1-xCoxO3引用本文复制引用
基金项目
浙江大学科技创新合作专项(桂科ZD20302002)
浙江大学科技创新合作专项(桂科AB22036003)
出版年
2024
NETL
NSTL
万方数据