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Volume 25 Issue 4
Sep.  2013
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Article Navigation >  LASER TECHNOLOGY  > 2001 >  25(4): 302-305

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Microstructure and properties of hard alloy coating of laser cladding

  • 1.

    National Laboratory of Laser Technology, HUST, Wuhan, 430074

  • Received Date: 2000-05-08
  • Investigation has been carried out into the laser cladding of several Co-base hard alloy.It shows that the flowability of the molten bath improves and the emerging of gas holes in cladding coating can be eliminated when Al material with low melting point is added and that the wettability of TiC obviously improves and the claddability of hard alloy coating increases when Ni material is added.The hardness of WC-Co cladding coating can reach up to HV0.2 1100.Adding TiC to coating obviously enhances the hardness of cladding coating.The hardness values range from HV0.2 1200 to HV0.2 1300.
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  • [1] 武晓雷,陈光南.金属学报,1998:10:1033～1038
    [2] 曾晓雁.激光熔覆金属陶瓷复合涂层中陶瓷相行为的研究.华中理工大学博士学位论文,1994
    [3]

    Hu C,Barnard L,Mridha S et al.J Mater Processing Tech,1996:58:87
    [4] 硬质合金的生产.北京:冶金工业出版社,1974:409
    [5] 闫毓禾,钟敏霖.高功率激光加工及其应用.天津:天津科学技术出版社,1994
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Microstructure and properties of hard alloy coating of laser cladding

  • 1. National Laboratory of Laser Technology, HUST, Wuhan, 430074
  • Received Date: 2000-05-08
  • Available Online: 2001-07-25

Abstract: Investigation has been carried out into the laser cladding of several Co-base hard alloy.It shows that the flowability of the molten bath improves and the emerging of gas holes in cladding coating can be eliminated when Al material with low melting point is added and that the wettability of TiC obviously improves and the claddability of hard alloy coating increases when Ni material is added.The hardness of WC-Co cladding coating can reach up to HV0.2 1100.Adding TiC to coating obviously enhances the hardness of cladding coating.The hardness values range from HV0.2 1200 to HV0.2 1300.

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