FeW -SiC Esaslı Kompozit Kaplamaların Mikro Yapı ve Aşınma özellikleri

Abstract

In this paper, FeW+SiC based metal matrix composite (MMC) coating layer on the AISI 304 stainless steel were formed by gas tungsten arc (GTA) weld process. Rate of SiC in the produced coating was changed as 10, 25 and 50 wt. % in order to investigate the effect of silicon carbide (SiC) on the microstructure, hardness and abrasive wear properties. Optical microscope (OM), scanning electron microscopy (SEM) equipped with an energy dispersive X-ray spectrometer (EDS) and X-ray diffraction (XRD) were employed for studying the microstructure and elemental analysis of the coatings. Optical and SEM observations showed that coating layer was uniformly bonded to substrate. The formation of Fe2C, Cr7C3 , W2C carbides ve Fe2Si, CrSi2 silicides has been determined in the microstructure. It was concluded that FeW-25 % SiC composite coating was the most suitable combination as a result of the study on the properties of hardness and wear performance.