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PHASE COMPOSITION, MICROSTRUCTURE, AND TRIBOLOGICAL PROPERTY OF PLASMA-SPRAYEDTiC-BASED COATING

Author

Listed:
  • SHIBIN SUN

    (School of Materials Science and Engineering, Shandong University, Jinan 250061, China)

  • ZENGDA ZOU

    (School of Materials Science and Engineering, Shandong University, Jinan 250061, China)

  • XUEMEI LIU

    (School of Materials Science and Engineering, Shandong University, Jinan 250061, China)

  • HANCHAO SHI

    (School of Materials Science and Engineering, Shandong University, Jinan 250061, China)

Abstract

TiC-based wear resistant coating was prepared by plasma spraying using reconstituted composite powders doped with ultra-fine carbide. Phase composition and microstructure of as-sprayed coating were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) utilizing backscattered imaging mode (BSE), and electron probe micro-analysis. Wear test was performed by using a ring-on-block tester under dry sliding condition. Results show that the coating adheres well to the substrate and no delamination appears.TiCcontent underwent pronounced reduction because of oxidation, reaction, and physical loss. Reactions betweenTiCandMoand probably between dissociatedCandMolead to the formation ofMo2C. Wear resistance ofNiCrMo–TiCcoating is about 4–8 times higher than that of substrate under different applied force. This work shed light on the reconstitution of spraying powder doped with ultra-fine reinforce phase particles, and the present results are important for the preparation of nano-dopedTiC-based coatings.

Suggested Citation

  • Shibin Sun & Zengda Zou & Xuemei Liu & Hanchao Shi, 2008. "PHASE COMPOSITION, MICROSTRUCTURE, AND TRIBOLOGICAL PROPERTY OF PLASMA-SPRAYEDTiC-BASED COATING," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 15(06), pages 815-819.
    • Handle: RePEc:wsi:srlxxx:v:15:y:2008:i:06:n:s0218625x08012049
    DOI: 10.1142/S0218625X08012049
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