采用微弧氧化法制备高电阻率涂层，实现Ti65合金的巨耐蚀性

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2025-06-06 DOI:10.1016/j.matlet.2025.138889

Yu Ma , Jianying Zhang , Xingyu He , Hongliang Zhang , Renwei Cao , Yurii Luhovskyi , Mingwei Zhu

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引用次数: 0

摘要

本研究采用微弧氧化技术在Ti65合金表面制备了厚度为~ 4 μ m的陶瓷涂层。MAO涂层的Ecorr为- 0.1167 V，明显高于Ti65涂层（- 0.5156 V），其Icorr仅为6.01 × 10-10 A·cm−2，比Ti65涂层低2个数量级。MAO涂层优异的耐蚀性主要是由于其内部致密层的电阻率高（是外部松散层的4倍），有效地抑制了Cl-的渗透，从而保护基体不受腐蚀。

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Achieving giant corrosion resistance of Ti65 alloy with high-resistivity coating by micro-arc oxidation

In this study, a ceramic coating with a thickness of ∼4 μ m was prepared on Ti65 alloy by micro-arc oxidation technology. The E_corr of the MAO coating is markedly more positive (−0.1167 V) than that of the Ti65 substrate (−0.5156 V), and the I_corr of the MAO coating is merely 6.01 × 10^-10 A·cm⁻², which is two orders of magnitude lower than that of the Ti65 substrate. The outstanding corrosion resistance of the MAO coating is primarily attributed to the high resistivity of its inner dense layer (4 times that of the outer loose layer), which effectively inhibits Cl^- penetration and thereby protects the substrate from corrosion.

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来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive