轻松制作 TiN 涂层,提高不锈钢的耐腐蚀性能

IF 5.3 2区 材料科学 Q1 MATERIALS SCIENCE, COATINGS & FILMS
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引用次数: 0

摘要

不锈钢因其优异的机械性能而被广泛使用,但其表面硬度较低,从而降低了其耐腐蚀性能。在此,我们采用了一种直接的超声波喷丸强化技术来制造与基体结合良好的 TiN 涂层 (USG)。腐蚀测试表明,腐蚀电流密度(icorr)从 6.09 × 10-7 A-cm-2 显著降至 7.40 × 10-9 A-cm-2,腐蚀速率从 299.49 毫米/年降至 121.67 毫米/年。高能加工室有助于快速形成化学键合的 TiN 层。在含有水和氯离子的环境中,TiN 的化学惰性有助于避免腐蚀反应,从而提高 USG 样品的耐腐蚀性。进一步的 AIMD 计算揭示了 TiN 在原子尺度上的抗腐蚀机理,显示了 TiN 与基底之间的强化学键,形成了致密的保护层。此外,TiN 在盐碱环境中的化学惰性能有效防止基底腐蚀。这项工作展示了在不锈钢表面制造耐腐蚀涂层的一种新颖而有效的方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Facile fabrication of TiN coatings to enhance the corrosion resistance of stainless steel
Stainless steel, widely used for its excellent mechanical properties, suffers from low surface hardness that reduces its corrosion resistance. Herein, a straightforward ultrasonic shot peening technique was employed to fabricate a TiN coating (USG) that is well-bonded to the substrate. Corrosion tests demonstrated a significant decrease in corrosion current density (icorr) from 6.09 × 10−7 A·cm−2 to 7.40 × 10−9 A·cm−2, and the corrosion rate decreased from 299.49 mm/year to 121.67 mm/year. The high-energy processing chamber facilitated rapid formation of a chemically-bonded TiN layer. The chemical inertness of TiN in environments containing water and chloride ions helps to avoid corrosive reactions, thereby enhancing the corrosion resistance of the USG samples. Further AIMD calculations reveal the corrosion-resistant mechanism of TiN at the atomic scale, showing strong chemical bonding between TiN and the substrate, forming a dense protective layer. Additionally, the chemical inertness of TiN in saline environments effectively prevents substrate corrosion. This work demonstrates a novel and effective approach for fabricating corrosion-resistant coatings on stainless steel surfaces.
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来源期刊
Surface & Coatings Technology
Surface & Coatings Technology 工程技术-材料科学:膜
CiteScore
10.00
自引率
11.10%
发文量
921
审稿时长
19 days
期刊介绍: Surface and Coatings Technology is an international archival journal publishing scientific papers on significant developments in surface and interface engineering to modify and improve the surface properties of materials for protection in demanding contact conditions or aggressive environments, or for enhanced functional performance. Contributions range from original scientific articles concerned with fundamental and applied aspects of research or direct applications of metallic, inorganic, organic and composite coatings, to invited reviews of current technology in specific areas. Papers submitted to this journal are expected to be in line with the following aspects in processes, and properties/performance: A. Processes: Physical and chemical vapour deposition techniques, thermal and plasma spraying, surface modification by directed energy techniques such as ion, electron and laser beams, thermo-chemical treatment, wet chemical and electrochemical processes such as plating, sol-gel coating, anodization, plasma electrolytic oxidation, etc., but excluding painting. B. Properties/performance: friction performance, wear resistance (e.g., abrasion, erosion, fretting, etc), corrosion and oxidation resistance, thermal protection, diffusion resistance, hydrophilicity/hydrophobicity, and properties relevant to smart materials behaviour and enhanced multifunctional performance for environmental, energy and medical applications, but excluding device aspects.
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