Stability Investigation of TiB2 Coatings in Molten Zinc Fabricated by Electrophoretic Deposition in Molten Salts

IF 2.6 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Metals Pub Date : 2024-08-29 DOI:10.3390/met14090981

Jialie Liu, Junjie Xu, Chuntao Ge, Jie Pang, Weiliang Jin, Geir Martin Haarberg, Saijun Xiao

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Abstract

To enhance the anticorrosion properties of molybdenum metal in liquid zinc, this study successfully fabricated TiB2 coatings on molybdenum substrates via the molten salt electrophoretic deposition technique and investigated their corrosion resistance in molten zinc. Initially, TiB2 nanoparticles with a size ranging from 50 to 150 nm were synthesized using the borothermal reduction method in a molten NaF-AlF3 bath at 1238 K. Subsequently, the electrophoretic deposition experiment was conducted under a cell voltage of 1.2 V (i.e., 0.6 V/cm) for a duration of 1 h in the melt containing TiB2 nanoparticles, resulting in a uniform, continuous, and compact TiB2 coating (35 μm thick) on the molybdenum substrate. Moreover, the corrosion resistance of the TiB2-coated molybdenum metal to molten zinc was tested through continuous immersion. After 120 h of immersion, the TiB2 coating showed no signs of cracking or peeling off, successfully protecting the molybdenum metal substrate from corrosion by molten zinc. The results confirm that the molten salt electrophoretic deposition technique can be used to prepare TiB2 coatings with good resistance to molten zinc corrosion on molybdenum metal.

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熔盐电泳沉积法制造的熔融锌中 TiB2 涂层的稳定性研究

为了提高钼金属在液态锌中的防腐性能，本研究通过熔盐电泳沉积技术在钼基底上成功制备了 TiB2 涂层，并研究了它们在熔融锌中的耐腐蚀性能。首先，在 1238 K 的 NaF-AlF3 熔池中采用硼热还原法合成了尺寸为 50 至 150 nm 的 TiB2 纳米粒子。随后，在 1.2 V 的电池电压（即 0.6 V/cm）下，在含有 TiB2 纳米粒子的熔液中进行了持续 1 小时的电泳沉积实验，在钼基底上形成了均匀、连续、致密的 TiB2 涂层（厚度为 35 μm）。此外，还通过连续浸泡测试了涂有 TiB2 的钼金属对熔融锌的耐腐蚀性。经过 120 小时的浸泡，TiB2 涂层没有出现开裂或脱落的迹象，成功地保护了钼金属基底免受熔融锌的腐蚀。结果证实，熔盐电泳沉积技术可用于制备在钼金属上具有良好抗熔融锌腐蚀性能的 TiB2 涂层。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Metals MATERIALS SCIENCE, MULTIDISCIPLINARY-METALLURGY & METALLURGICAL ENGINEERING

CiteScore

4.90

自引率

13.80%

发文量

1832

审稿时长

1.5 months

期刊介绍： Metals (ISSN 2075-4701) is an open access journal of related scientific research and technology development. It publishes reviews, regular research papers (articles) and short communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Metals provides a forum for publishing papers which advance the in-depth understanding of the relationship between the structure, the properties or the functions of all kinds of metals.