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Electrospark deposition of Al2O3–TiB2/Ni composite-phase surface coatings on Cu–Cr–Zr alloy electrodes
Journal of Asian Ceramic Societies
To improve electrode life during the resistance spot welding of galvanized steel plates, an Al 2 O 3 -TiB 2 composite coating was synthesized on the surfaces of spot-welding electrodes through an electrospark deposition process. The microstructure, elemental composition, phase structure, and mechanical properties of the coating were characterized using scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction analysis, and microhardness testing. It was found thatdoi:10.1016/j.jascer.2014.11.005 fatcat:ehssjrusmfdjbkxv3bei6zeg4i