Mi-qi Wang, Ze-hua Zhou, Lin-tao Wu, Ying Ding, and Ze-hua Wang, Characterization and in-situ formation mechanism of tungsten carbide reinforced Fe-based alloy coating by plasma cladding, Int. J. Miner. Metall. Mater., 25(2018), No. 4, pp. 439-443. https://doi.org/10.1007/s12613-018-1589-4
Cite this article as:
Mi-qi Wang, Ze-hua Zhou, Lin-tao Wu, Ying Ding, and Ze-hua Wang, Characterization and in-situ formation mechanism of tungsten carbide reinforced Fe-based alloy coating by plasma cladding, Int. J. Miner. Metall. Mater., 25(2018), No. 4, pp. 439-443. https://doi.org/10.1007/s12613-018-1589-4
Research Article

Characterization and in-situ formation mechanism of tungsten carbide reinforced Fe-based alloy coating by plasma cladding

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  • Corresponding author:

    Mi-qi Wang    E-mail: wangmiqihhu@163.com

  • Received: 24 September 2017Revised: 24 October 2017Accepted: 27 October 2017
  • The precursor carbonization method was first applied to prepare W-C compound powder to perform the in-situ synthesis of the WC phase in a Fe-based alloy coating. The in-situ formation mechanism during the cladding process is discussed in detail. The results reveal that fine and obtuse WC particles were successfully generated and distributed in Fe-based alloy coating via Fe/W-C compound powders. The WC particles were either surrounded by or were semi-enclosed in blocky M7C3 carbides. Moreover, net-like structures were confirmed as mixtures of M23C6 and α-Fe; these structures were transformed from M7C3. The coarse herringbone M3C carbides did not only derive from the decomposition of M7C3 but also partly originated from the chemical reaction at the α-Fe/M23C6 interface. During the cladding process, the phase evolution of the precipitated carbides was WC → M7C3 → M23C6+M3C.
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