Microstructure and Properties of Ag-SnO2 Coating Fabrica- ted by Plasma Spraying. Issue 4 (April 2016)

• Record Type: Journal Article
• Authors: Fu, Chong; Hou, Jinli; Guo, Tianfu; Wang, Junbo; Ding, Bingjun; Zheng, Jing
• Is Part Of: Xi you jin shu cai liao yu gong cheng. Volume 45:Issue 4(2016)
• Page Start: 869
• Page End: 873
• Publication Date: 2016-04
• Subjects: plasma spraying -- Ag-SnO2 -- contact material -- arc erosion; Nonferrous metals -- Periodicals; 669.05
• DOI: 10.1016/S1875-5372(16)30090-X
• Languages: English
• ISSNs: 1875-5372

Abstract

Abstract: Ag-SnO2 coating on copper substrate has been prepared by an atmospheric plasma spraying method using high energy ball milled Ag-12wt%SnO2 composite powder as raw material. The microstructures of the Ag-SnO2 coating were characterized by XRD and SEM. The mechanical properties and arc erosion performance of the as sprayed coating have been determined by tensile test, microhardness and arc erosion tests, respectively. The results show that the Ag-SnO2 coating presents a compact microstructure, and the nanosized SnO2 particles are uniformly dispersed in the Ag matrix of the coating. The mechanical properties and the arc erosion performance of the Ag-SnO2 coating are close to those of Ag-SnO2 bulk. After arcing test, the surface of the coating presents the dispersion of cathode spots and a little erosion, indicating that the Ag-SnO2 coating has excellent arc-erosion resistance. Plasma spray technique is an effective approach to manufacture Ag-SnO2 contact coating with good mechanical properties and arc erosion resistance.