Study on DC arc performance of doped AgSnO2 contact materials

Hai-tao Wang, Menglin Yang, Zi-xiang Wang, Shao-hang Xu, Jinqing Wang
2019 Engineering Research Express  
In this paper, AgSnO 2 contact materials doped with Bi 2 O 3 , CeO 2 , La 2 O 3 and TiO 2 were prepared by powder metallurgy. The arc time, arc energy and welding force of the four contact materials were measured, and the arc combustion images and surface microstructure were photographed, which were used to investigate the effects of different additives on the arc properties of contact materials. The JF04C electrical contact material testing system was used to measure arc parameters, high-speed
more » ... camera and scanning electron microscope were used to capture arc image and surface morphology, respectively. The obtained image was processed using an image processing method based on mathematical morphology. The arc area change was obtained by arc image processing, and then the arc combustion process was analyzed. Combined with arc parameters, arc area and microstructure analysis, the advantages and disadvantages of the four-contact materials doping with different additives against arc erosion were investigated. The results show that the AgSnO 2 /Bi 2 O 3 and AgSnO 2
doi:10.1088/2631-8695/ab44e1 fatcat:j2esl4mmhndqni6u64ukdnzhbm