Microstructure and Properties of Electrospark Deposition Coating on Die Steel

Yu Xin Gao; Cheng Zhao

doi:10.4028/www.scientific.net/AMR.291-294.188

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 291-294Microstructure and Properties of Electrospark...

Microstructure and Properties of Electrospark Deposition Coating on Die Steel

Abstract:

Superfine coatings have been prepared by Electro-spark deposition (ESD) on die steel substrate with WC-8Co electrode. The microstructures and abrasion performance of the coating were investigated by X-ray diffractometer (XRD), scanning electron microscopy (SEM) and microhardness tester. The results show that ultra-fine particles prevail in the coating. The primary phases of the coating contain Fe₃W₃C, Co₃W₃C, Fe₇W₆ and W₂C. The maximum microhardness reaches 1432.5 HV0.3. The results of abrasive test demonstrated that the coating had an excellent sliding wear resistance because the superfine particles distributed dispersedly in the coating increased the resistance to micro-cutting and plowing during the wear test, which effectively improves the surface performance of die steel substrate.

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Advanced Materials Research (Volumes 291-294)

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188-191

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https://doi.org/10.4028/www.scientific.net/AMR.291-294.188

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Online since:

July 2011

Authors:

Yu Xin Gao, Cheng Zhao

Keywords:

Electro-Spark Deposition (ESD), Microstructure, WC-Co Coating, Wear Resistance

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