PREPARATION OF CU/LA2NIO4 ELECTRICAL CONTACT MATERIALS AND STUDY ON ARC EROSION PERFORMANCE
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.