Corrosion behavior of micro-arc oxidation coatings modified by laser remelting on 6063 aluminum alloy

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

Materials Letters Pub Date : 2025-06-18 DOI:10.1016/j.matlet.2025.138935

Chao Wang , Yunjie Ge , Bo Jiang , Renguo Song

引用次数: 0

Abstract

Ceramic coatings were fabricated on 6063 aluminum alloy using micro-arc oxidation (MAO) and then subjected to laser remelting (LR) treatment. The results demonstrate that LR treatment increases coating density, reduces porosity to 7.95 %, decreases coating thickness, and enhances α -Al₂O₃ phase content. MAO-LR coatings exhibit a 34 % higher adhesion strength (41.3 N) compared to MAO coatings (30.9 N). Electrochemical tests reveal that both LR and MAO treatments improve the corrosion resistance of the 6063 aluminum alloy, with the MAO-LR coatings demonstrating superior corrosion performance, which is likely attributed to the reduced porosity.

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6063铝合金激光重熔改性微弧氧化涂层的腐蚀行为

采用微弧氧化法（MAO）在6063铝合金表面制备陶瓷涂层，然后进行激光重熔处理。结果表明：LR处理提高了镀层密度，孔隙率降至7.95%，镀层厚度减小，α -Al2O3相含量增加；MAO- lr涂层的附着力（41.3 N）比MAO涂层（30.9 N）高34%。电化学测试表明，LR和MAO处理均提高了6063铝合金的耐蚀性，其中MAO-LR涂层表现出更好的耐蚀性能，这可能是由于降低了孔隙率。

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

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