Preparation and property of chromium carbide thermal diffusion coating on cold working die materials

Abstract

Thermal diffusion (TD) salt bath chromizing of cold working dies was studied. Firstly, it obtained an ideal salt bath formula by comparing with a variety of formulas, and then obtained the influence rule of coating thickness based on studying of some process parameters. The microstructure morphologies and phase structures of the TD chromizing coating were investigated by X-ray diffraction (XRD), energy-dispersive spectrometry (EDS) and other modern analysis methods. Meanwhile, it carried out a system of testing and analysis of coating, such as hardness, wear resistance, etc.

Keywords

chromium carbide coating / thermal diffusion process / cold working die / preparation / SEM / EDS

References

[1] Wang Q. Research on TD Chromizing Carbide Coating of Cold Working die Materials[D], 2010 Wuhan Wuhan University of Technology

[2] Liu X. J., Wang H.C., Li Y.Y. Effects of Rare Earths in Borax Salt Bath Immersion Vanadium Carbide Coating Process On Steel Substrate[J]. Surface & Coatings Technology, 2008, 202: 788-4792.

[3] Liu X.J., Wang H.C., Li D.W., Wu Y.X. Study on Kinetics of Carbide Coating Growth by Thermal Diffusion Process[J]. Surface & Coatings Technology, 2006, 201: 2414-2418.

[4] Wu Y.X. Study on Thermal Diffusion on Cold Extrusion Die[D], 2006 Wuhan Wuhan University of Technology

[5] Liu X.J. Study on Vanadium Carbide Coating on Die Steels by Thermal Diffusion Process[D], 2007 Wuhan Wuhan University of Technology

[6] Sen S. Influence of Chromium Carbide Coating on Tribological Performance of Steel[J]. Materials & Design, 2006, 27(2): 85-91.

[7] Sen S. The Characterization of Vanadium Boride Coatings on AISI 8620 Steel[J]. Surface & Coatings Technology, 2005, 190: 1-6.

[8] Herrera Y., Grigorescu I.C., Ramirez J., iRauso C.D., Staia M.H. Micro structural Characterization of Vanadium Carbide Laser Clad Coatings[J]. Surface & Coatings Technology, 1998, 108–109: 308-311.

[9] Aghaie-Khafri M., Fazlalipour F. Vanadium Carbide Coatings on Die Steel Deposited by the Thermo-reactive Diffusion Technique[J]. Journal of Physics and Chemistry of Solids, 2008, 69: 2465-2470.

[10] Sen U. Wear Properties of Niobium Carbide Coatings Performed by Pack Method on AISI 1040 Steel[J]. Thin Solid Films, 2005, 483: 152-157.

[11] Shah S. V., Dahotre N. B. Laser Surface-engineered Vanadium Carbide Coating for Extended Die Life[J]. Journal of Materials Processing Technology, 2002, 124: 105-112.

[12] Chicco B., Borbidge W.E., Summerville E. Experimental Study of Vanadium Carbide and Carbonitride Coatings[J]. Materials Science and Engineering, 1999, A266: 62-72.