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Microstructure and Performance Analysis of Cr3C2-25%NiCr Coating Prepared by Plasma Spraying Process

Journal Key Engineering Materials (Volumes 373 - 374)
Volume Surface Engineering
Edited by M.K. Lei, X.P. Zhu, K.W. Xu and B.S. Xu
Pages 47-50
DOI 10.4028/www.scientific.net/KEM.373-374.47
Citation Can Ming Wang et al., 2008, Key Engineering Materials, 373-374, 47
Online since March, 2008
Authors Can Ming Wang, Hong Fei Sun, Qiang Song
Keywords Ceramic Compound Coating, Cr3C2-NiCr, Plasma Spraying, Wear Resistance
Abstract

Cr3C2-NiCr compound coating was acquired on 20 steel substrate by plasma spraying process. The microstructure of the coating is dense with low porosity. Carbide lamellartiy inlays into the nickel-base solid solution in the coating. Main phases of the coating are Cr3C2, Cr23C6, Cr7C3 and nickel-base solid solution, etc. Average microhardness of the coating is about HV0.1756.9. Microhardness of some ceramic phases in the coating is as high as HV0.11113, which helps to the improving of wear resistance of the coating. The wear-resisting property of the coating is good under grain-abrasion condition and excellent under lubricated wear condition.

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