Effects of Capacitance on Electro Spark Deposition of Stellite Alloy Coating
By using a new electro spark deposition (ESD) instrument and employing Stellite alloy electrode as electrode material,the electrodeposition test on H13 steel surface was carried out under various capacitance values,and the influence of capacitance values on quality and structure of coatings was explored.The structure and thickness of the deposited layer were analyzed by XRD and SEM.Results showed that the microstructure of the coating prepared under different capacitance parameters had little difference,and the structure compositions of the white bright layer were M7C3 and Co based solid solution.Besides,the coating thickness increased with the increase of the capacitance.
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