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Formation Mechanism Of Titanium Carbide Crystal In Laser Synthesized Metal-Ceramic Composite Coating

Author

Listed:
  • BAOSHUAI DU

    (Shandong Electric Power Research Institute, Jinan 250002, P. R. China)

  • ZHONGWEN ZHANG

    (Shandong Electric Power Research Institute, Jinan 250002, P. R. China)

  • XINHONG WANG

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

  • ZENGDA ZOU

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

Abstract

In situtitanium carbide reinforced iron-based composite coating was deposited on mild carbon steel using laser surface engineering (LSE) with ferrotitanium and graphite as precursor. The microstructure and phase constituents of the deposited coating were characterized. Formation mechanism of titanium carbide crystal in the composite coating was elucidated by correlating the morphology of titanium carbide and the thermal cycle experienced by the precursor during the laser treatment. It was demonstrated that titanium carbide was formedin situas a result of the metallurgical reaction between ferrotitanium and graphite following a liquid-precipitation route. Different morphologies of titanium carbide crystal (dendrite and fishbone) correspond to the primary and eutectic titanium carbide respectively.

Suggested Citation

  • Baoshuai Du & Zhongwen Zhang & Xinhong Wang & Zengda Zou, 2011. "Formation Mechanism Of Titanium Carbide Crystal In Laser Synthesized Metal-Ceramic Composite Coating," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 18(01n02), pages 1-9.
    • Handle: RePEc:wsi:srlxxx:v:18:y:2011:i:01n02:n:s0218625x11014412
    DOI: 10.1142/S0218625X11014412
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