Affiliation:
1. School of Chemistry and Materials Engineering Anhui Key Laboratory of Low Temperature Co-fired Materials Huainan Normal University Huainan 232038 P. R. China
2. School of Materials Science and Engineering Hefei University of Technology Hefei 230009 P. R. China
3. School of Material and Chemical Engineering Bengbu University Bengbu 233030 P. R. China
Abstract
Introducing reinforcements is a crucial way to modify WCu electric contacts. Herein, the arc erosion performances of WCu/Ti3SiC2under various direct current voltages are investigated. The eroded microstructures are observed by a 3D laser scanning confocal microscopy and a thermal field emission scanning electron microscope. Compositions of the eroded surfaces are analyzed by a Raman spectroscopy. With the elevated voltages, values of breakdown current, arc duration, arc energy, and arc discharge distance increase, while the breakdown strength decreases. Meanwhile, the eroded regions gradually change from circular shape to irregularly curved corrugations under the elevated voltages. Copper and Ti3SiC2can disperse arc during arc discharge, and the liquid and gas generated by the two phases can make differences in protecting WCu/Ti3SiC2.
Funder
Natural Science Foundation of Anhui Province
Subject
Condensed Matter Physics,General Materials Science
Cited by
1 articles.
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