Abstract
The sulfur-iodine process for hydrogen production which is in harsh atmosphere requires more excellent corrosion resistance and mechanical property than those of the pure tantalum. Ta-W alloy which has more excellent corrosion resistance and mechanical property than pure tantalum is difficult to alloy due to high melting temperature. In this study, Ta-W coated samples (Ta-7.31W, Ta-4.12W and Ta-1.92W) were prepared by multi-anode reactive alloy coating (MARC) process in molten salt (LiF-NaF-K2TaF7) at different distance between a cathode and an anode. In case of Ta-4.12W, a corrosion rate of less than 0.0087mm/year was attained in hydriodic acid at 160°C and thickness uniformity was 30±0.7μm. Also, this resulting coating layer has hardness up to 12.9 % stronger than pure tantalum coating layer. Those alloy coating films contributed to significant corrosion resistance enhancement.
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References
S. Senderoff, G. W. Mellors and W. J. Reinhart, “The Electrodeposition of Coherent Deposits of Refractory Metals II; The Electrode Reactions in the Deposition of Tantalum”, J. Electrochem.Soc., 112(8) (1965), 840–845.
F. Cardarelli, P. Taxil and A. Savall, “Tantalum protective thin coating techniques for the Chemical Process Industry: Molten salts electrocoating as a new alternative”, Int. J. Refract. Met. Hard Mater., 14(5–6) (1996), 365–381.
P. Chamelot, et. al., “Electro-Deposition of Tantalum on Tungsten and Nickel in LiF-NaF-CaF2 Melt Containing K2TaF7 Electrochemical Study”, Electrochim. Acta, 47(21) (2002), 3423–3429.
Z.L. Yuan, et. al., “A new method for deposition of cubic Ta diffusion barrier for Cu metallization”, Thin Solid Films, 434(1–2) (2003) 126–129.
O.G. Cervantes, et. al., “Activation energy of tantalum-tungsten oxide thermite reactions”, Combustion and Flame, 158(1) (2011), 117–122.
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© 2013 TMS (The Minerals, Metals & Materials Society)
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Lee, YJ., Park, DJ., Kang, KS., Bae, GG., Han, MH., Lee, JH. (2013). Molten Salt Multi-Anode Reactive Alloy Coating (Marc) of Ta-W Alloy on Sus316l. In: Marquis, F. (eds) Proceedings of the 8th Pacific Rim International Congress on Advanced Materials and Processing. Springer, Cham. https://doi.org/10.1007/978-3-319-48764-9_245
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DOI: https://doi.org/10.1007/978-3-319-48764-9_245
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48586-7
Online ISBN: 978-3-319-48764-9
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