不同表面状态的6016铝合金的结痂腐蚀及丝状腐蚀性能

冉凡青, 白永芳, 魏建国, 尹竹松

doi:10.16577/j.issn.1001-1560.2023.0100

材料保护 >

2023 , Vol. 56 >Issue 4: 183 - 187

DOI: https://doi.org/10.16577/j.issn.1001-1560.2023.0100

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不同表面状态的6016铝合金的结痂腐蚀及丝状腐蚀性能

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天津忠旺铝业有限公司

冉凡青(1987-)，博士，主要研究方向为铝合金及其加工，电话:18920905105，E-mail:ranfq2588＠163.com

收稿日期: 2022-10-19

修回日期: 2022-11-21

录用日期: 2022-12-18

网络出版日期: 2023-08-04

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SCAB and Filamentous Corrosion Properties of 6016 Aluminum Alloy with Different Surface States

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(Tianjin Zhongwang Aluminum Co.，Ltd.，Tianjin 301700，China)

Received date: 2022-10-19

Revised date: 2022-11-21

Accepted date: 2022-12-18

Online published: 2023-08-04

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摘要

汽车用铝合金通常要求具有较高的耐蚀性能。为探究不同表面状态对合金耐蚀性的影响,本工作对6016铝合金进行了不同的表面处理,包括光板表面、光板+钛锆涂层、毛化表面、毛化+钛锆涂层,通过扫描电镜、结痂腐蚀(SCAB)及丝状腐蚀(FFC)试验,对比了不同表面6016合金的表面微观形貌和腐蚀结果。结果表明,毛化处理与钛锆处理可减少合金表面轧制和碱洗产生的细微裂纹,使合金表面更均匀,从而提升了合金耐SCAB腐蚀和耐FFC腐蚀的能力。

关键词： 6016 铝合金; 毛化; 钛锆涂层; 结痂腐蚀; 丝状腐蚀

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冉凡青, 白永芳, 魏建国, 尹竹松 . 不同表面状态的6016铝合金的结痂腐蚀及丝状腐蚀性能[J]. 材料保护, 2023 , 56(4) : 183 -187 . DOI: 10.16577/j.issn.1001-1560.2023.0100

Abstract

Aluminum alloys used in automobiles are usually required to have high corrosion resistance.To explore the effects of differnet surface conditions on the corrosion resistance of alloy，6016 alloy was subjected to different surface treatments，including MF surface，MF+TiZr coatign，EDT surface and EDT+TiZr coating，and the surface micro-morphology and corrosion results of 6016 alloy in different surface conditions were compared by SEM，SCAB and FFC tests.Results showed that the EDT treatment and TiZr treatment could reduce the fine cracks caused by rolling and alkali washing on the surface of the alloy，and make the surface of the alloy more uniform，thus improving the ability of the alloy to resist SCAB corrosion and FFC corrosion.

Key words： 6016 aluminium alloy; EDT; TiZr coating; SCAB; FFC

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