High-speed imaging observation on molten bridges of AgNi10 electrical contact material

被引：0
作者：
Jing-Hong Chen
Song Chen
Ming Xie
Jie-Qiong Hu
Sai-Bei Wang
机构：
[1] Kunming Institute of Precious Metals,State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metal
来源：
Rare Metals | 2023年 / 42卷
关键词：
Molten bridge; High-speed imaging; Arc; AgNi10 electrical contact material;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The electrical contact–high-speed imaging experimental system was developed to investigate the molten bridge phenomena of AgNi10 electrical contact material. The dimension of molten bridges was measured along with the measurement of waveforms in the contact voltage under the load of direct current (DC) 6 V (8–20 A) and breaking speed of 50.0 mm·s−1. A part of the observed results was presented as well as surface morphology of the contacts after electrical contact behavior, which shows some interesting and new phenomena. Molten bridges and arc could exist simultaneously. The stable molten bridge looks like cylindrical shape and then becomes needle tip at its rupture, the diameter and length of molten bridges both increase with the increase in current and the growth gradient of the diameter is larger than that of the length. The morphology and elemental distribution of the contact surface are changed by the behavior of electrical contact.
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页码：336 / 345
页数：9
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