Diffusion mechanism in molten salt baths during the production of carbide coatings via thermal reactive diffusion

Aliakbar Ghadi; Hassan Saghafian; Mansour Soltanieh; Zhi-gang Yang

doi:10.1007/s12613-017-1538-7

Volume 24 Issue 12

Dec. 2017

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2017 > 24(12): 1448-1458

Aliakbar Ghadi, Hassan Saghafian, Mansour Soltanieh, and Zhi-gang Yang, Diffusion mechanism in molten salt baths during the production of carbide coatings via thermal reactive diffusion, Int. J. Miner. Metall. Mater., 24(2017), No. 12, pp. 1448-1458. https://doi.org/10.1007/s12613-017-1538-7

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Aliakbar Ghadi, Hassan Saghafian, Mansour Soltanieh, and Zhi-gang Yang, Diffusion mechanism in molten salt baths during the production of carbide coatings via thermal reactive diffusion, Int. J. Miner. Metall. Mater., 24(2017), No. 12, pp. 1448-1458. https://doi.org/10.1007/s12613-017-1538-7

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Research Article

Diffusion mechanism in molten salt baths during the production of carbide coatings via thermal reactive diffusion

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Corresponding author:
Mansour Soltanieh E-mail: Mansour_soltanieh@iust.ac.ir
Received: 27 February 2017; Revised: 11 May 2017; Accepted: 15 May 2017

Abstract

Abstract

The diffusion mechanism of carbide-forming elements from a molten salt bath to a substrate surface was studied in this research, with particular focus on the processes occurring in the molten bath at the time of coating. Metal, oxide, and metal-oxide baths were investigated, and the coating process was performed on H13 steel substrates. Scanning electron microscopy and electron-probe microanalysis were used to study the coated samples and the quenched salt bath. The thickness of the carbide coating layer was 6.5 ±0.5, 5.2 ±0.5, or 5.7 ±0.5 μm depending on whether it was deposited in a metal, oxide, or metal-oxide bath, respectively. The phase distribution of vanadium-rich regions was 63%, 57%, and 74% of the total coating deposited in metal, oxide, and metal-oxide baths, respectively. The results obtained using the metal bath indicated that undissolved suspended metal particles deposited onto the substrate surface. Then, carbon subsequently diffused to the substrate surface and reacted with the metal particles to form the carbides. In the oxide bath, oxide powders dissolved in the bath with or without binding to the oxidative structure (Na₂O) of borax; they were then reduced by aluminum and converted into metal particles. We concluded that, in the metal and oxide baths, the deposition of metal particles onto the sample surface is an important step in the formation of the coating.
- thermal reactive diffusion;
- diffusion mechanism;
- carbide coating films;
- metal particles;
- borax bath

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[1]	E. Poursaiedi and A. Salarvand, Effect of coating surface finishing on fatigue behavior of C450 steel CAPVD coated with (Ti,Cr)N, J. Mater. Eng. Perform., 25(2016), No. 8, p. 3448.
[2]	S. Sen, A study on kinetics of Cr_xC-coated high-chromium steel by thermo-reactive diffusion technique, Vacuum, 79(2005), No. 1-2, p. 63.
[3]	S.L. Zhao, J. Zhang, Z. Zhang, S.H. Wang, and Z.G. Zhang, Microstructure and mechanical properties of (Ti,Al,Zr)N/(Ti,Al,Zr,Cr)N films on cemented carbide substrates, Int. J. Miner. Metall. Mater., 21(2014), No. 1, p. 77.
[4]	Y. Li, J.P. Li, C.C. Jia, and X.Q. Liu, Fabrication of tungsten films by metallorganic chemical vapor deposition, Int. J. Miner. Metall. Mater., 19(2012), No. 12, p. 1149.
[5]	U. Sen, Kinetics of niobium carbide coating produced on AISI 1040 steel by thermo-reactive deposition technique, Mater. Chem. Phys., 86(2004), No. 1, p. 189.
[6]	F.E. Castillejo, D.M. Marulanda, J.J. Olaya, and J.E. Alfonso, Wear and corrosion resistance of niobium-chromium carbide coatings on AISI D2 produced through TRD, Surf. Coat. Technol., 254(2014), p. 104.
[7]	P.C. King, R.W. Reynoldson, A. Brownrigg, and J.M. Long, Cr(N,C) diffusion coating formation on pre-nitrocarburised H13 tool steel, Surf. Coat. Technol., 179(2004), No. 1, p. 18.
[8]	B. Kurt, Y. Küçük, and M.S. Gök, Microabrasion wear behavior of VC and CrC coatings deposited by thermo-reactive diffusion technique, Tribol. Trans., 57(2014), No. 2, p. 345.
[9]	X.S. Fan, Z.G. Yang, C. Zhang, and Y.D. Zhang, Thermo-reactive deposition processed vanadium carbide coating:growth kinetics model and diffusion mechanism, Surf. Coat. Technol., 208(2012), p. 80.
[10]	F.E. Castillejo, J.J. Olaya, and J.M. Arroyo-Osorio, Nb-Cr complex carbide coatings on AISI D2 steel produced by the TRD process, J. Braz. Soc. Mech. Sci. Eng., 37(2014), No. 1, p. 87.
[11]	X.S. Fan, Z.G. Yang, Z.X. Xia, C. Zhang, and H.Q. Che, The microstructure evolution of VC coatings on AISI H13 and 9Cr18 steel by thermo-reactive deposition process, J. Alloys Compd., 505(2010), No. 1, p. 15.
[12]	C.Y. Wei and F.S. Chen, Thermoreactive deposition/diffusion coating of chromium carbide by contact-free method, Mater. Chem. Phys., 91(2005), No. 1, p. 192.
[13]	F.S. Chen, P.Y. Lee, and M.C. Yeh, Thermal reactive deposition coating of chromium carbide on die steel in a fluidized bed furnace, Mater. Chem. Phys., 53(1998), No. 1, p. 19.
[14]	P.C. King, A. Brownrigg, J.M. Long, and R.W. Reynoldson, Fluidized bed CrN coating formation on prenitrocarburized plain carbon steel, J. Mater. Eng. Perform., 13(2004), No. 4, p. 431.
[15]	U. Sen, Wear properties of niobium carbide coatings performed by pack method on AISI 1040 steel, Thin Solid Films, 483(2005), No. 1-2, p. 152.
[16]	X.S. Fan, Z.G. Yang, C. Zhang, Y.D. Zhang, and H.Q. Che, Evaluation of vanadium carbide coatings on AISI H13 obtained by thermo-reactive deposition/diffusion technique, Surf. Coat. Technol., 205(2010), No. 2, p. 641.
[17]	H.R. Karimi Zarchi, M. Jalaly, M. Soltanieh, and H. Mehrjoo, Comparison of the activation energies of the formation of chromium carbide coating on carburized and uncarburized AISI 1020 steel, Steel Res. Int., 80(2009), p. 859.
[18]	A.A. Ghadi and M. Soltanieh, Effect of carbon presence in the substrate and salt bath on the formation of chromium coating layers on steel through TRD process, J. Ceram. Process. Res., 16(2015), No. 6, p. 657.
[19]	A. Ghadi, M. Soltanieh, and H.R. Karimi Zarchi, Effect of salt bath composition on the chromium diffusion on plain carbon steels by TRD process, Defect Diffus. Forum, 326-328(2012), p. 377.
[20]	G. Babak and M.K.S. Mohammad, Formation of vanadium carbide with the plasma electrolytic saturation method (PES) and comparison with thermo reactive diffusion method (TRD), Acta Metall. Slovaca, 22(2016), p. 111.
[21]	S. Sen and U. Sen, Sliding wear behavior of niobium carbide coated AISI 1040 steel, Wear, 264(2008), No. 3-4, p. 219.
[22]	M. Aghaie-Khafri and F. Fazlalipour, Vanadium carbide coatings on die steel deposited by the thermo-reactive diffusion technique, J. Phys. Chem. Solids, 69(2008), No. 10, p. 2465.
[23]	S. Taktak, S. Ulker, and I. Gunes, High temperature wear and friction properties of duplex surface treated bearing steels, Surf. Coat. Technol., 202(2008), No. 14, p. 3367.
[24]	H.F. Wang, H.C. Wang, and C.G. Pan, Vanadium carbide coating growth on die steel substrate in borax salt bath, J. Wuhan Univ. Technol. Sci. Ed., 25(2010), No. 4, p. 600.
[25]	T. Arai and S. Moriyama, Growth behaviour of chromium carbide and niobium carbide layers on steel substrates obtaining by salt bath immersion process, Thin Solid Films, 259(1995), p. 174.
[26]	T. Arai and S. Moriyama, Growth behavior of vanadium carbide coatings on steel substrates by a salt bath immersion coating process, Thin Solid Films, 249(1994), No. 1, p. 54.
[27]	T. Arai, Behavior of nucleation and growth of carbide layers on alloyed carbide particles in substrates in salt bath carbide coating, Thin Solid Films, 229(1993), No. 2, p. 171.
[28]	T. Arai, H. Fujita, Y. Sugimoto, and Y. Ohta, Diffusion carbide coatings formed in molten borax systems, J. Mater. Eng., 9(1987), No. 2, p. 183.
[29]	T. Arai, Carbide coating process by use of molten borax bath in japan, J. Heat. Treat., 1(1979), No. 2, p. 15.
[30]	A. Paul and F. Assabghy, Optical and esr spectra of vanadium (IV) in different simple germanate, phosphate and borate glasses, J. Mater. Sci., 10(1975), No. 4, p. 613.
[31]	A. Paul and G.C. Upreti, EPR and optical absorption of Cr³⁺ in binary Na₂O-B₂Ô₃ glasses, J. Mater. Sci., 10(1975), No. 7, p. 1149.
[32]	T. Arai and H. Oikawa, Method for surface treatment and treating material therefor, USA Patent, No. 4778540, 1988.
[33]	N. Komatsu, T. Arai, and H. Fujita, Treating composition, forming a mixed carbide layer of Va-Group element and of chromium on a ferrous alloy surface and resulting product, USA Patent, No. 4230751, 1980.
[34]	S.M.M. Khoee, A. Ata, A.E. Geçkinli, and N. Bozkurt, VC & NbC coating on DIN 115CrV3 steel in molten borax bath, Mater. Sci. Forum, 163(1994), p. 627.
[35]	G. Khalaj and H. Pouraliakbar, Computer-aided modeling for predicting layer thickness of a duplex treated ceramic coating on tool steels, Ceram. Int., 40(2014), No. 4, p. 5515.
[36]	G. Khalaj, A. Nazari, S.M.M. Khoie, M.J. Khalaj, and H. Pouraliakbar, Chromium carbonitride coating produced on DIN 1.2210 steel by thermo-reactive deposition technique:Thermodynamics, kinetics and modeling, Surf. Coat. Technol., 225(2013), p. 1.
[37]	C.K.N. Oliveira, C.L. Benassi, and L.C. Casteletti, Evaluation of hard coatings obtained on AISI D2 steel by thermo-reactive deposition treatment, Surf. Coat. Technol., 201(2006), No. 3-4, p. 1880.
[38]	C.K.N. Oliveira, R.M. Muñoz Riofano, and L.C. Casteletti, Micro-abrasive wear test of niobium carbide layers produced on AISI H13 and M2 steels, Surf. Coat. Technol., 200(2006), No. 16-17, p. 5140.
[39]	Z.H. Yuan, Z.J. Wang, W.Q. Zhang, Z.J. Wang, and X.X. Duan, Preparation and property of chromium carbide thermal diffusion coating on cold working die materials, J. Wuhan Univ. Technol. Sci. Ed., 25(2010), No. 4, p. 596.
[40]	C.K.N. Oliveira, R.M.M. Mun, L.C. Casteletti, and R.M. Muñoz Riofano, Formation of carbide layers on AISI H13 and D2 steels by treatment in molten borax containing dissolved both Fe-Nb and Fe-Ti powders, Mater. Lett., 59(2005), No. 14-15, p. 1719.
[41]	A. Ghadi, M. Soltanieh, H. Saghafian, and Z.G. Yang, Investigation of chromium and vanadium carbide composite coatings on CK45 steel by ThermalReactive Diffusion, Surf. Coat. Technol., 289(2016), p. 1.