Submicron MC-type reinforced coating produced by laser alloying
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State Key Laboratory of Material Processing and Die and Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, China
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Corresponding author:
WANG Ai-hua, ahwang@mail.hust.edu.cn
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Received Date:
2011-12-14
Accepted Date:
2011-12-21
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Abstract
In order to study the influence of carbides produced by in situ synthesis of various chemical reactions or direct addition on wear resistance of carbide reinforced composite coatings,TiC reinforced Fe-based composite coatings were prepared on T10 steel substrate by laser alloying.Then their microstructures,phases,microhardness and wear properties were investigated and analyzed.Results showed that compact and non-defective alloy layers were obtained,consisting of γ-CrFe7C0.5 and submicron MC(M=Ti,Cr,W) particles.Austenite transformed into martensite in wear testing because of processing hardening.Wear weight loss of direct addition was 2 times to 3 times larger than that of in situ synthesis.The content of carbides produced through combination reaction between Ti and C was higher than that produced through reduction reaction between TiO2 and C,which led to a better tribological performance.The results can serve as a guide in selecting the best method of the ceramic phase introduction when preparing TiC reinforced Fe-based composite coatings.
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References
|
[1]
|
LI Y L,DU D M,SONG J G,et al.Application and development of surface strengthening technology of moulds[J].Heat Treatment Technology and Equipment,2010,31 (4):9-12(in Chinese). |
|
[2]
|
LI J G.Surface hardening technologies and mould service life[J].China Surface Engineering,2002,15 (1):2-7 (in Chinese). |
|
[3]
|
GARRIDO A H,CONZALEZ R,CADENAS M,et al.Tribological behavior of laser-textured NiCrBSi coatings[J].Wear,2011,271 (5/6):925-933. |
|
[4]
|
OCELIK V,FURAR I,de HOSSON J.Microstructure and properties of laser clad coatings studied by orientation imaging microscopy[J].Acta Materialia,2010,58 (20):6763-6772. |
|
[5]
|
EMAMIAN A,CORBIN S F,KHAJEPOUR A.The influence of combined laser parameters on in-situ formed TiC morphology during laser cladding[J].Surface & Coatings Technology,2011,206 (1):124-131. |
|
[6]
|
MASANTA M,SHARIFF S M,CHOUDHURY A R.A comparative study of the tribological performances of laser clad TiB2-TiC-Al203composite coatings on AISI 1020 and AISI 304 substrates[J].Wear,2011,271(7/8):1124-1133. |
|
[7]
|
WANG X H,QU S Y,DU B S,et al.Effect of molybdenum on microstructure and wear properties of Fe-Ti-Mo-C laser clad coatings[J].Materials Science and Technology,2011,27(7):1222-1228. |
|
[8]
|
LEI Y W,SUN R L,LEI J B,et al.A new theoretical model for high power laser clad TiC/NiCrBSiC composite coatings on Ti6Al4V alloys[J].Optics and Lasers in Engineering,2010,48(9):899-905. |
|
[9]
|
CHEN C Z,WANG D G,LEI T Q.Structure characteristics of laser clad ceramic and its composite coatings[J].Laser Technology,2001,25(6):401-405 (in Chinese). |
|
[10]
|
SHEN X C,GUO W M,GUO Y F,et al.Preparation and photocatalytic property of iron-doped TiO2 nanoparticles[J].Chinese Journal of Applied Chemistry,2005,22 (10):34-38 (in Chinese). |
|
[11]
|
ZHU W D,LIU Q B.Microstructure and properties of broadhand laser cladding WCp/Ni base alloy gradient coating[J].Laser Technology,2002,26(3):183-185(in Chinese). |
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