Stability Investigation of TiB2 Coatings in Molten Zinc Fabricated by Electrophoretic Deposition in Molten Salts
Abstract
:1. Introduction
2. Materials and Experimental Procedure
2.1. EPD of TiB2 Coatings in NaF-AlF3 Molten Salts
- (1)
- Synthesis of Nano-TiB2 by Borothermal Reduction in Molten Bath
- (2)
- EPD of TiB2 Coatings
2.2. Corrosion Resistance Test of TiB2 Coatings in Molten Zinc
2.3. Characterization
3. Results and Discussion
3.1. Synthesis of TiB2 NPs and EPD of TiB2 Coatings in NaF-AlF3 Molten Salts
3.2. Corrosion Behavior of Uncoated Molybdenum in Molten Zinc
3.3. Corrosion Behavior of Molybdenum with TiB2 Coatings in Liquid Zinc
4. Conclusions
- In the NaF-AlF3 molten salt system at 1238 K, TiB2 particles ranging from 50 to 150 nm were synthesized through the borothermal reduction method. Under a 1.2 V cell voltage, TiB2 NPs migrated within the molten salts and deposited on the molybdenum substrate, forming a dense TiB2 coating with high adhesion strength (Lc3 = 44 N);
- At 823 K, molybdenum and molten zinc formed a solid solution via reactive diffusion, rendering it unable to resist corrosion. However, the absence of a chemical reaction between TiB2 and molten zinc at 823 K, along with the coating’s dense structure and low oxygen content, enables the TiB2 coating to exhibit excellent corrosion resistance after 120 h of immersion, effectively protecting the molybdenum substrate.
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Liu, J.; Xu, J.; Ge, C.; Pang, J.; Jin, W.; Haarberg, G.M.; Xiao, S. Stability Investigation of TiB2 Coatings in Molten Zinc Fabricated by Electrophoretic Deposition in Molten Salts. Metals 2024, 14, 981. https://doi.org/10.3390/met14090981
Liu J, Xu J, Ge C, Pang J, Jin W, Haarberg GM, Xiao S. Stability Investigation of TiB2 Coatings in Molten Zinc Fabricated by Electrophoretic Deposition in Molten Salts. Metals. 2024; 14(9):981. https://doi.org/10.3390/met14090981
Chicago/Turabian StyleLiu, Jialie, Junjie Xu, Chuntao Ge, Jie Pang, Weiliang Jin, Geir Martin Haarberg, and Saijun Xiao. 2024. "Stability Investigation of TiB2 Coatings in Molten Zinc Fabricated by Electrophoretic Deposition in Molten Salts" Metals 14, no. 9: 981. https://doi.org/10.3390/met14090981