SLURRY EROSION BEHAVIOR OF HVOF SPRAYED WC-12Co AND Cr3C2-25NiCr COATINGS DEPOSITED ON 16Cr5Ni STAINLESS STEEL

Jin Du, Jianfeng Zhang, Jinkun Xiao and Chao Zhang
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Jin Du: College of Mechanical Engineering, Yangzhou University, Yangzhou 225127, P. R. China†College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225100, P. R. China‡Department of Mechanical Engineering, Yangzhou Polytechnic College, Yangzhou 225009, P. R. China
Jianfeng Zhang: College of Mechanical Engineering, Yangzhou University, Yangzhou 225127, P. R. China
Jinkun Xiao: College of Mechanical Engineering, Yangzhou University, Yangzhou 225127, P. R. China
Chao Zhang: College of Mechanical Engineering, Yangzhou University, Yangzhou 225127, P. R. China

Surface Review and Letters (SRL), 2020, vol. 27, issue 08, 1-14

Abstract: Slurry erosion behaviors of HVOF WC-12Co and Cr3C2-25NiCr coatings as well as 16Cr5Ni martensitic stainless steel were investigated in the present paper. Erosion experiments were carried out using slurry with different rotational speeds, particle size and concentration to evaluate their influences on the coatings. It was found that the rotational speed had the most significant influence on WC-12Co coating, whereas the erosion particle size was a more dominant factor for the Cr3C2-25NiCr coating. Nevertheless, the effect of concentration was most important in the case of 16Cr5Ni steel. It is demonstrated that cermet composite coatings could effectively enhance the resistance of slurry erosion, and the WC-12Co coating exhibits a minimum erosion rate compared with the steel and Cr3C2-25NiCr coating. 16Cr5Ni steel and WC-12Co coating showed ductile and brittle mechanisms, respectively, whereas Cr3C2-25NiCr exhibited multiple mechanisms of ductile and brittle, dominantly ductile.

Keywords: Slurry erosion; coating; WC-12Co; Cr3C2-25NiCr; erosion mechanism (search for similar items in EconPapers)
Date: 2020
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DOI: 10.1142/S0218625X19501932

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