Laser direct fabrication graphene on silver-based contact as high-end electrical product

• Published in: Journal of materials science Vol. 58; no. 19; pp. 8178 - 8188
• Main Authors: Qiang, Hao, Sun, Qihui, Zheng, Xi, Qi, Ming, Chen, Mengzhen, Luo, Nengneng, Xu, Chao, Ye, Xiaohui
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.05.2023; Springer; Springer Nature B.V
• Subjects: Carbon; Characterization and Evaluation of Materials; Chemistry and Materials Science; Classical Mechanics; Corrosion; Crystallography and Scattering Methods; Electric contacts; Electric equipment; Electric properties; Electrical conductivity; Electrical equipment and supplies; Electrical machinery; Electrical resistivity; Graphene; Graphite; Laboratories; Lasers; Materials Science; Mechanical properties; Metals; Metals & Corrosion; Morphology; Oxidation; Oxidation resistance; Polymer Sciences; Scanning; Scanning electron microscopy; Silver; Solid Mechanics; Spectrum analysis; Tribology
• ISSN: 0022-2461; 1573-4803
• DOI: 10.1007/s10853-023-08509-0

Electrical contact materials are a key core component of switching appliances. However, the arc-resistance, electrical conductivity and tribological properties of traditional contact materials should be improved for the electrical equipment in the new era. This work proposes a strategy to prepare a novel graphene/silver-based contact material by laser process. Nanosecond laser is applied to grow the graphene film on the surface of commercial AgSnO 2 contacts. The optimal process conditions: the laser power is 4.8 W, scanning speed is 5 mm/s, and scanning times is 20. The resistance of graphene/silver-based contact is 0.1 mΩ, 53.7% better than that of the original contact The oxidation resistance is only 0.12%. The graphene/silver-based contact provides new perspective to produce high-end electrical contact materials. Graphical Abstract