%0 Journal Article %T Microstructure and Tribological Properties of NiCrBSi Coatings Prepared by Different Methods %A ZHANG,Mengqing %A ZHANG,Wei %A YU,Helong %A ZHANG,Pan %J CHINA SURFACE ENGINEERING %@ 1007-9289 %V 27 %N 6 %D 2014 %P 75-81 %K flame spraying; induction remelting; high frequency induction cladding; NiCrBSi; tribological properties %X NiCrBSi coatings were prepared by oxygenacetylene flame spraying,high frequency induction remelting(HFIR) and high frequency induction cladding (HFIC) on 45 steel substrate.The microstructures and phase structure of the coatings were analyzed using metallographic microscope,scanning electron microscopy (SEM) and Xray diffractometry (XRD), respectively. The hardness distribution of NiCrBSi coatings were measured by microhardness test. The tribological properties of the coatings were investigated by a ballondisc tribometer under dry sliding wear test condition.The bondingstrength of three different coatings was tested by high load scratchtest machine. The results show that the main phase of the flame spraying coating is γNi, the coating has less rigid material and high objection rate. The spraying coating is turned into more rigid material and low objection rate after the HFIR processing, combination between the coating and the matrix has changed from machanical into metallurgical.The main phases of the HFIR and HFIC coatings induce γNi, Cr7C3, Cr23C6, CrB, et al.Both of the two coatings were fully metallurgically combined and have an even distribution of rigid materials. Tribological property of the HFIR coatings is close to HFIC coatings, and both are better than that of flame spraying coatings. %R 10.11933/j.issn.1007-9289.2014.06.008 %U http://www.csejournal.com/zgbmgcen/ch/reader/view_abstract.aspx %1 JIS Version 3.0.0