Structure and Properties of Superfine Coating on Cast Steel by Electro-Spark Deposition

Yu Xin Gao; Zhi Gang Fang; Jian Sheng Wang

doi:10.4028/www.scientific.net/AMR.189-193.1018

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 189-193Structure and Properties of Superfine Coating on...

Structure and Properties of Superfine Coating on Cast Steel by Electro-Spark Deposition

Abstract:

Superfine coatings have been attempted to prepare by Electro-spark deposition (ESD) on cast steel substrate. The microstructures and properties 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, Si₂W and W₂C. Its average microhardness reaches 1511.75 HV. 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 cast steel substrate.

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Periodical:

Advanced Materials Research (Volumes 189-193)

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1018-1022

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.189-193.1018

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Online since:

February 2011

Authors:

Yu Xin Gao, Zhi Gang Fang, Jian Sheng Wang

Keywords:

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

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