Process study of Ni-based WC composite coatings by means of laser-induction hybrid cladding
-
1.
School of Material Science and Engineering, Nanchang University of Aeronautics, Nanchang 330063, China;
-
2.
School of Optoelectronics Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
-
Received Date:
2007-10-12
Accepted Date:
2008-08-23
-
Abstract
To increase the cladding efficiency and eliminate the cracks in the cladding layer,laser-induction hybrid cladding was adopted to obtain Ni-based WC composite coatings without porosities and cracks.The influence of processing parameters on the composite coatings by means of laser-induction hybrid cladding was investigated.The results showed that the area density of deposition powder had an increase with increasing laser specific energy.At the same laser specific energy, the cladding height increased and the dilution decreased with increasing area density of deposition powder.When the area density of deposition powder kept constant, the cladding width slightly increased and the contact angle decreased with increasing laser specific energy.Moreover,due to introduction of induction heater,the efficiency of laser-induction hybrid cladding was increased about five times higher than that of the individual laser cladding.As a result,the temperature gradient during laser-induction hybrid cladding was much lower than that during the general laser cladding, which was the main reason that no cracks appeared in Ni-based WC composite coatings.
-
-
References
|
[1]
|
CHAO M J,YU J M,LIANG E J,et al.Effect of Nb2O5 on the cracking susceptibility of laser clad Fe-based coating[J].Laser Technology,2005,29(6):568-571(in Chinese). |
|
[2]
|
YANG J X,ZUO T C,XU W Q,et al.The research of laser cladding Co-base alloy coating on ductile cast iron[J].Laser Technology,2006,30(5):517-519(in Chinese). |
|
[3]
|
ZHAOY F,CHEN C Z.Mechanism of the deformation and preventive measures of the cracks in metal ceramics cladding layer[J].Laser Technology,2006,30(1):16-19(in Chinese). |
|
[4]
|
YOSHIWARA S,KAWANAME T.Method for surface alloying metal with a high density energy beam and an alloy steel:United States,4750947[P].1988-06-14. |
|
[5]
|
CHOI J,CHOUDHURI S K,MAZUMDER J.Role of preheating and specific energy input on the evolution of microstructure and wear properties of laser clad Fe-Cr-C-W alloys[J].Journal of Materials Science,2000,35(13):3213-3219. |
|
[6]
|
ZHOU S F,HUANG Y J,ZENG X Y,et al.Microstructure characteristics of Ni-based WC composite coatings by laser induction hybrid rapid cladding[J].Materials Science Engineering,2008,A480(1/2):564-572. |
|
[7]
|
ZHOU S F,HUANG Y J,ZENG X Y.A study of Ni-based WC composite coatings by laser induction hybrid rapid cladding with elliptical spot[J].Applied Surface Science,2008,254(10):3110-3119. |
|
[8]
|
COELHO J P,ABREU M A,PIRES M C.High speed laser welding of plastic films[J].Optics and Lasers in Engineering,2000,34(4/6):385-395. |
|
[9]
|
MCDONALD G,HPENDRICKS R C.Effect of thermal cycling on ZrO2-Y2O3 thermal barrier coatings[J].Thin Solid Films,1980,73(2):491-496. |
-
-
Proportional views
-
Map
DownLoad: