Cu/La2NiO4电接触材料的制备及电弧烧蚀性能研究
PREPARATION OF CU/LA2NIO4 ELECTRICAL CONTACT MATERIALS AND STUDY ON ARC EROSION PERFORMANCE
王博文 1陈瑞华 1常凯歌 1董文琪 1郭永利 1童童1
作者信息
- 1. 西安交通大学物理学院,陕西西安 710049
- 折叠
摘要
解决铜基触点材料因易氧化而生成不导电物质导致触点失效的关键在于提高材料的导电性能,基于导电陶瓷La2NiO4因其具有导电性能,论文采用溶胶凝胶法制备获得了导电陶瓷La2NiO4粉体,用粉末冶金法制备出致密Cu/La2NiO4复合材料并进行微观形貌观察和物相分析.经过电弧烧蚀后,观察表面烧蚀形貌,探讨氧化层的微观组织,并进行温升测试.研究结果表明,电弧烧蚀后的Cu/La2NiO4复合材料表面有裂纹并且触点表面有多种侵蚀形貌特征并存,氧化层可能因接触力的作用而脱落以提高导电性能.本论文的研究工作表明,采用铜掺杂导电陶瓷La2NiO4的方法,可以有效提高电触点材料电弧烧蚀后的导电性.
Abstract
The key to solve the contact failure,caused by copper-based contact material's for-mation of non-conductive substances due to easily oxidized,is to enhance the material's elec-trically conducting properties.Based on the electrically conducting properties of the ceramic La2NiO4,this paper added the sol-gel method to produce conductive ceramic La2NiO4 pow-der.Subsequently,dense Cu/La2NiO4 composites were prepared by powder metallurgy meth-od,and the micrograph observation and XRD pattern phase analysis were carried out.After arc erosion,micrographs of the surface and erosion layer were discussed and temperature rise were tested.The results show that there are cracks and various arc erosion morphology char-acteristics on the surface of Cu/La2NiO4 composite after arc erosion.Additionally,the study reveals that the application of contact force may lead to the detachment of the oxide layer,en-hancing the electrically conducting properties.This paper's research work demonstrates that the method of copper-added conductive ceramic La2NiO4can effectively enhance the electrically conducting properties of electrical contact materials after arc erosion.
关键词
电弧烧蚀/温升/导电陶瓷La2NiO4/复合材料Key words
arc erosion/temperature rise/conductive ceramic La2NiO4/composite materials引用本文复制引用
基金项目
西安交通大学本科教学改革研究青年项目(2022)(2022Q-19)
国家级大学生创新训练项目(2023)(SJ202310698003)
出版年
2024
国家科技期刊平台
NSTL
万方数据