| 李鹏飞,郭泉忠,王勇,左晓姣,汪川.微弧氧化处理对6061铝合金电偶腐蚀防护[J].装备环境工程,2024,21(5):121-131. LI Pengfei,GUO Quanzhong,WANG Yong,ZUO Xiaojiao,WANG Chuan.6061 Aluminium Alloy Protected from Galvanic Corrosion by Micro-arc Oxidation Treatment[J].Equipment Environmental Engineering,2024,21(5):121-131. |
| 微弧氧化处理对6061铝合金电偶腐蚀防护 |
| 6061 Aluminium Alloy Protected from Galvanic Corrosion by Micro-arc Oxidation Treatment |
| 投稿时间：2024-03-20 修订日期：2024-04-22 |
| DOI：10.7643/issn.1672-9242.2024.05.014 |
| 中文关键词: 铝合金 微弧氧化 封孔 电化学 电偶腐蚀 腐蚀过程中图分类号:TG174.4 文献标志码:A 文章编号:1672-9242(2024)05-0121-11 |
| 英文关键词:aluminium alloy micro-arc oxidation hole sealing electrochemistry galvanic corrosion corrosion process |
| 基金项目:国家重点研发计划项目(2021YFC2803102)；沈阳市自然科学基金专项(23503605) |
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| Author | Institution |
| LI Pengfei | School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China |
| GUO Quanzhong | Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;Liaoning Shenyang Soil and Atmosphere Corrosion of Material National Observation and Research Station, Shenyang 110016, China |
| WANG Yong | Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;Liaoning Shenyang Soil and Atmosphere Corrosion of Material National Observation and Research Station, Shenyang 110016, China |
| ZUO Xiaojiao | School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China |
| WANG Chuan | Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;Liaoning Shenyang Soil and Atmosphere Corrosion of Material National Observation and Research Station, Shenyang 110016, China |
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| 中文摘要: |
| 目的 提高船舶上铝合金的耐蚀性能。方法 使用双极性脉冲电源对6061铝合金进行微弧氧化处理，并使用环氧树脂进行封孔，通过电化学测试、扫描电子显微镜(SEM)、能谱仪(EDS)、浸泡腐蚀试验和电偶腐蚀试验等方法，对膜层的表面形貌、截面形貌、物相组成和耐蚀性能进行测试。结果 制备的6061铝合金微弧氧化膜层厚度约为40 μm，致密均匀。在240 h浸泡试验后，仍具有较强的耐蚀性，与316L不锈钢耦合的电流密度从约47 μA/cm2下降到20 μA/cm2左右，对6061铝合金的耐蚀性有显著提升。封孔处理后，浸泡腐蚀240 h，未发现明显腐蚀，电偶电流进一步下降到11 μA/cm2。结论 对6061铝合金进行微弧氧化处理，可以有效提高其耐蚀性能，对电偶腐蚀有较好的抑制作用，封孔处理则可以进一步提高铝合金的耐蚀性能。 |
| 英文摘要: |
| The work aims to improve the corrosion resistance of aluminum alloys on ships. The 6061 aluminium alloy was subject to micro-arc oxidation treatment with a bipolar pulsed power supply and was sealed with epoxy resin. The surface morphology, cross-section morphology, physical phase composition, and corrosion resistance of the resulting film layer were tested through electrochemical testing, SEM observation, EDS, immersion corrosion experiments, and galvanic coupling corrosion tests. The micro-arc oxidation film prepared on the 6061 aluminium alloy had a thickness of approximately 40 μm, and it was both dense and uniform. After a 240-hour immersion experiment, the corrosion resistance of the material remained strong. The coupling current density of 316L stainless steel decreased from approximately 47 μA/cm2 to about 20 μA/cm2, and the corrosion resistance of 6061 aluminium alloy was significantly improved. No obvious corrosion was found after hole sealing treatment followed by the 240-hour immersion and the electric coupling current decreased to 11 μA/cm2. The corrosion resistance of the 6061 aluminium alloy can be effectively improved through micro-arc oxidation treatment which also has good inhibition effect on galvanic corrosion. Additionally, the corrosion resistance of the aluminium alloy can be further improved through hole sealing treatment. |
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