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

被引：7

作者：

Chen, Jing-Hong ^{[1
]}

Chen, Song ^{[1
]}

Xie, Ming ^{[1
]}

Hu, Jie-Qiong ^{[1
]}

Wang, Sai-Bei ^{[1
]}

机构：

[1] Kunming Inst Precious Met, State Key Lab Adv Technol Comprehens Utilizat Pla, Kunming 650106, Yunnan, Peoples R China

来源：

RARE METALS | 2023年 / 42卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Molten bridge; High-speed imaging; Arc; AgNi10 electrical contact material; TEMPERATURE RISE; PLATED CONTACTS; MICROSTRUCTURE; PERFORMANCE; SEPARATION; MECHANISM; DIAMETER; BREAK; ARC;

D O I：

10.1007/s12598-017-0911-z

中图分类号：

T [工业技术];

学科分类号：

08 ;

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 center dot 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.

引用

页码：336 / 345

页数：10

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