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Volume 23 Issue 3
Sep.  2013
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Article Navigation >  LASER TECHNOLOGY  > 1999 >  23(3): 149-153

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Study on microstructure and its formation mechanism of Fep/Cu composite coatings produced by laser cladding

  • 1.

    Department of Materials Science & Engineering, HUST, Wuhan, 430074

  • Received Date: 1998-06-01
    Accepted Date: 1998-08-10
  • Using a 2kW CO2 laser to irradiate the mixture of Cu and Al (5% in weight fraction) powders on Q235 mild steel substrate the composite coatings of Fe/Cu has been successfully produced.The microstructure observations with SEM show that the spherical particles exist in the cladding layer and have regular distribution and are proved to be Fe rich phase particles.These particles have the important effect on the mechanical and electrical magnetic performances of the cladding layer.This paper points out that the formation procedure of the particles has the relation with the fogging process of metal and formulates an expression to calculate the diameter of the particles.
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  • [1] 李强,欧阳家虎,雷廷权et al.材料科学与工艺,1996;4(4):22~35
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    Frenk A,Henchoz N,Kurz W.Zeits chrift f r Metallkunde,1993;84(12):886~892
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    Basu B,Date A W.Int J Heat&Mass Transfer,1992;35(5):1049~1058
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    Munitz A.Metallurgical Transactions,1987;18B(9):565~575
    [5] 王爱华.铝合金的激光熔覆及其过渡区行为的研究.华中理工大学博士学位论文,1997
    [6] 舍克里J著.彭一川等译.冶金中的流体流动现象.北京:冶金工业出版社,1985:340~352
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Study on microstructure and its formation mechanism of Fep/Cu composite coatings produced by laser cladding

  • 1. Department of Materials Science & Engineering, HUST, Wuhan, 430074
  • Received Date: 1998-06-01
  • Accepted Date: 1998-08-10
  • Available Online: 1999-05-25

Abstract: Using a 2kW CO2 laser to irradiate the mixture of Cu and Al (5% in weight fraction) powders on Q235 mild steel substrate the composite coatings of Fe/Cu has been successfully produced.The microstructure observations with SEM show that the spherical particles exist in the cladding layer and have regular distribution and are proved to be Fe rich phase particles.These particles have the important effect on the mechanical and electrical magnetic performances of the cladding layer.This paper points out that the formation procedure of the particles has the relation with the fogging process of metal and formulates an expression to calculate the diameter of the particles.

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