工艺参数对锌铜钛合金阳极氧化膜层腐蚀行为的影响

邹明泰, 彭明军, 孔壮壮, 沈 黎, 段永华, 起华荣

doi:10.16577/j.issn.1001-1560.2023.0038

材料保护 >

2023 , Vol. 56 >Issue 2: 87 - 93

DOI: https://doi.org/10.16577/j.issn.1001-1560.2023.0038

工艺探讨

工艺参数对锌铜钛合金阳极氧化膜层腐蚀行为的影响

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昆明理工大学材料科学与工程学院，云南昆明 650093

彭明军(1980-)，副教授，博士，主要从事锌基合金的制备、表面处理及应用研究，电话:18988294916，E-mail:pmj5530594＠kmust.edu.cn

收稿日期: 2022-08-20

修回日期: 2022-09-25

录用日期: 2022-10-19

网络出版日期: 2023-02-15

基金资助

国家自然科学基金(51761023)；云南省青年拔尖人才专项(YNWR-QNBJ-2020-010)资助

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Effects of Process Parameters on the Corrosion Behavior of Anodized Films of Zn-Cu-Ti Alloy

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School of Materials Science and Engineering，Kunming University of Science and Technology，Kunming 650093，China

Received date: 2022-08-20

Revised date: 2022-09-25

Accepted date: 2022-10-19

Online published: 2023-02-15

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摘要

为了改善当前锌铜钛合金在建筑行业上的颜色多样性和提升耐蚀性，通过极化曲线、交流阻抗、模拟海水浸泡实验和盐雾试验的方法，分析研究了阳极氧化处理后锌铜钛合金后的表面膜层的耐蚀性。结果表明:阳极氧化膜随着电流密度和电解液中氢氧化钠浓度的增加，生成膜的质量先提高后降低，当电流密度为10 A/dm2和氢氧化钠浓度为20 g/L 时，自腐蚀电位最正，自腐蚀电流密度最小，并且阳极氧化后的膜层能够显著地提高其在模拟海水腐蚀试验环境下的耐蚀性。

关键词： 阳极氧化; 工艺参数; 模拟海水浸泡试验; 盐雾试验; 锌铜钛合金; 腐蚀行为

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邹明泰, 彭明军, 孔壮壮, 沈黎, 段永华, 起华荣 . 工艺参数对锌铜钛合金阳极氧化膜层腐蚀行为的影响[J]. 材料保护, 2023 , 56(2) : 87 -93 . DOI: 10.16577/j.issn.1001-1560.2023.0038

Abstract

For improving the colour diversity and corrosion resistance of current zinc-copper-titanium alloys for the construction industry，the corrosion resistance of the surface film of Zn-Cu-Ti alloy after anodic oxidation treatment was analyzed and investigated by means of polarization curve，AC impedance，simulated seawater immersion experiment and salt spray test.Results showed that the quality of the anodic oxide film increased and then decreased with the increase of the current density and the concentration of NaOH in the electrolyte.When the current density was 10 A/dm2 and the NaOH concentration was 20 g/L，the as-obtained film had the most positive self-corrosion potential and the smallest self-corrosion current density.Additionally，the anodized film layer could significantly enhance its corrosion resistance in the simulated seawater corrosion test environment.

Key words： anodic oxidation; process parameters; simulated seawater immersion experiment; salt spray test; zinc-copper-titanium alloy; corrosion behavior

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