Electrical Erosion Characteristics of Pt-Ir-Zr Alloy Contact under DC Load

2013 ◽  
Vol 395-396 ◽  
pp. 191-195 ◽  
Author(s):  
Sai Bei Wang ◽  
Song Wang ◽  
Ming Xie ◽  
Ji Ming Zhang ◽  
You Cai Yang ◽  
...  
Keyword(s):  
Electrical Contact ◽  
Material Transfer ◽  
Arc Erosion ◽  
Erosion Mechanism ◽  
Micro Cracks ◽  
Electrical Erosion ◽  
Depth Study ◽  
Lower Loss ◽  
Contact Experiment ◽  
Zr Alloy

The analysis of electrical erosion characteristics of contacts under DC load is conducive to the in-depth study of the arc erosion mechanism. Through the electrical contact experiment, the electrical erosion status of the Pt-Ir-Zr alloy under DC load of 25V/15A is studied in this paper. The results show that: the contacts have excellent anti-welding behavior and lower loss on arc ablation. The separation acceleration of the breaking process between the movable and static contacts is 154.32μm/ms2. The arc erosion surfaces of the material show a large number of paste-like coagulum and bubbles. There are some micro-cracks existing on the surface of the Pt-Ir-Zr alloy contacts. The obvious material transfer phenomenon occurs between the movable and static contacts under DC load.

Material transfer behavior of AgTiB2 and AgSnO2 electrical contact materials under different currents

2017 ◽  
Vol 114 ◽  
pp. 139-148 ◽  
Author(s):  
Hangyu Li ◽  
Xianhui Wang ◽  
Xiuhua Guo ◽  
Xiaohong Yang ◽  
Shuhua Liang
Keyword(s):  
Electrical Contact ◽  
Material Transfer ◽  
Contact Materials ◽  
Transfer Behavior ◽  
Electrical Contact Materials

Electrical contact performance of various electro-deposited graphene reinforced silver-based nanocomposites

2020 ◽  
Vol 62 (4) ◽  
pp. 401-407
Author(s):  
Ramazan Karslioglu ◽  
Lujain Al-Falahi
Keyword(s):  
Pulse Current ◽  
Electrical Contact ◽  
Reverse Current ◽  
Electrical Contacts ◽  
Test Device ◽  
Arc Erosion ◽  
Contact Test ◽  
Grain Sizes ◽  
Contact Erosion ◽  
Pulse Reverse

Abstract Silver and silver(Ag)-graphene(Gr) nanocomposite coatings were prepared via direct current, pulse current and pulse reverse current on copper electrical contacts for evaluating electrical contact performance. The effects of the addition of Gr and current types on microstructure, crystallographic orientation, mechanical properties and electrical contact performance were investigataed via a scanning electron microscope, an X-Ray diffractometer, microhardness test device and an electrical contact test device, respectively. The addition of Gr changed the Ag surface morphology and decreased grain sizes. Moreover, the addition of Gr significantly improved arc erosion resistivity and decreased the average working temperature during the contact test. In addition, pulse current and pulse reverse current provided a significant improvement in microhardness and electrical contact erosion resistance owing to increased embedded graphene amounts in silver layers.

Arc erosion behavior of Ag/Ti3AlC2 electrical contact materials

2018 ◽  
Vol 740 ◽  
pp. 669-676 ◽  
Author(s):  
J. Ding ◽  
W.B. Tian ◽  
P. Zhang ◽  
M. Zhang ◽  
Y.M. Zhang ◽  
...  
Keyword(s):  
Electrical Contact ◽  
Contact Materials ◽  
Arc Erosion ◽  
Erosion Behavior ◽  
Electrical Contact Materials

Arc erosion mechanism of Ag-Ti3SiC2 material

2020 ◽  
Vol 817 ◽  
pp. 152741 ◽  
Author(s):  
Xiaochen Huang ◽  
Yi Feng ◽  
Jinlong Ge ◽  
Liang Li ◽  
Zongqun Li ◽  
...  
Keyword(s):  
Arc Erosion ◽  
Erosion Mechanism
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