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论文类型：期刊论文

发表时间：2013-06-01

发表刊物：Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment

收录刊物：EI、PKU、ISTIC、Scopus

卷号：34

期号：SUPPL.1

页面范围：163-166

ISSN号：10096264

摘要：The surface of H13 steel was strengthened by electro-spark deposition (ESD) machine of model DZ-4000(III) with WC electrode in the argon medium. The microstructure, element distribution, hardness and surface roughness of strengthened coating is analyzed by means of scanning electron microscopic, energy-dispersive spectrum, X-ray diffraction and micro-hardness testing machine. The results show that excellent metallurgical bonding between the coating and the substrate is obtained by ESD. The coating had an average thickness of about 60   m. The microstructure of the coating is mainly composed of Fe3W3C phase, (CrFe)7C3 phase and W2C phase. The average micro-hardness of the coating is 1321.4 HV0.05 which is three times than that of the substrates.