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ABRASIVE WEAR BEHAVIOR OF WC REINFORCEDNi-BASED COMPOSITE COATING SPRAYED AND FUSED BY OXY-ACETYLENE FLAME

Author

Listed:
  • QUN WANG

    (College of Materials Science and Engineering, Hunan University, Changsha, Hunan 410082, China)

  • ZHENHUA CHEN

    (College of Materials Science and Engineering, Hunan University, Changsha, Hunan 410082, China)

  • ZHANG XIONG DING

    (College of Energy and Engineering, Wuhan University of Technology, Wuhan, Hubei 430063, China)

  • DING CHEN

    (College of Materials Science and Engineering, Hunan University, Changsha, Hunan 410082, China)

Abstract

Microstructure of WC reinforcedNi-based self-fluxing alloy composite coating sprayed and fused by oxy-acetylene flame was investigated by scanning electron microscopy and energy dispersive X-ray Spectrometry, X-ray diffraction, and transmission electron microscopy. The wear performance of the coating was studied by a MLS-225 wet sand rubber wheel abrasive wear tester at various loads and sizes of abrasive particles. Also, the wear resistance of the coating was compared with uncoated ASTM1020 steel. The results indicated that the coating is bonded metallurgically to the substrate and has a homogeneous microstructure composed of both coarse WC and fine carbide and boride grains such asCr7C3,Cr23C6, andNi2Bwhich disperse uniformly in the matrix of γ-Nisolid solution andNi3B. The worn mass loss of the coating and ASTM1020 steel both increased with the load and size of abrasive particles, also, the coating has exhibited excellent abrasive wear resistance compared with ASTM1020 steel.

Suggested Citation

  • Qun Wang & Zhenhua Chen & Zhang Xiong Ding & Ding Chen, 2009. "ABRASIVE WEAR BEHAVIOR OF WC REINFORCEDNi-BASED COMPOSITE COATING SPRAYED AND FUSED BY OXY-ACETYLENE FLAME," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 16(03), pages 475-485.
    • Handle: RePEc:wsi:srlxxx:v:16:y:2009:i:03:n:s0218625x09012883
    DOI: 10.1142/S0218625X09012883
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