AlCl3-EMIC离子液体电沉积Al-Ti合金及耐蚀性研究

doi:10.11896/cldb.24100244

材料导报

2026, Vol. 40

Issue (2): 24100244-7 https://doi.org/10.11896/cldb.24100244

金属与金属基复合材料

AlCl₃-EMIC离子液体电沉积Al-Ti合金及耐蚀性研究

钟海霞, 钟庆东^*, 杨健, 章书剑, 王雪妹, 范佳宝

上海大学材料科学与工程学院,省部共建高品质特殊钢冶金与制备国家重点实验室,上海市钢铁冶金新技术开发应用重点实验室,上海 200444

Study on Electrodeposition of Al-Ti Alloy in AlCl₃-EMIC Ionic Liquid and Its Corrosion Resistance

ZHONG Haixia, ZHONG Qingdong^*, YANG Jian, ZHANG Shujian, WANG Xuemei, FAN Jiabao

School of Materials Science and Engineering, Shanghai University, State Key Laboratory of Metallurgy and Preparation of High-quality Special Steel, Shanghai Key Laboratory of New Technology Development and Application of Iron and Steel Metallurgy, Shanghai 20044, China

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摘要本研究旨在通过优化Al-Ti合金镀层的电沉积工艺,调控Ti含量并提升耐腐蚀性能,以满足高性能防护镀层的应用需求。采用恒电流法在铜基体上制备Al-Ti合金镀层,电解液由物质的量比2∶1的AlCl₃与1-乙基-3-甲基咪唑(EMIC)离子液体组成,并以氟钛酸钾(K₂TiF₆)作为Ti源,通过调控电流密度(10～20 mA/cm²)和电沉积时间(45～120 min),系统研究了其对镀层形貌、成分及耐腐蚀性能的影响。实验结果表明,随着电流密度的增加,镀层中的Ti含量显著提高,且在较高电流密度下镀层致密性增强。当电流密度为20 mA/cm²、电镀时间为60 min时,镀层中的Ti含量达到最大值(20.43%,质量分数)。电化学测试结果表面,随着电流密度的增加,自腐蚀电流密度从56.520 μA/cm²显著降低至1.068 μA/cm²。在15 mA/cm²条件下镀层表现出明显的钝化现象,表现为阳极极化曲线的平台区域。此外,随着电沉积时间的延长,镀层的电荷转移阻抗和膜电阻增加,当电镀时间为90 min时,镀层致密性进一步增强,电化学反应速率减慢,防护性能显著增强。综合分析表明电流密度为15 mA/cm²和电镀时间为90 min时,镀层均表现出最佳的耐腐蚀性能。

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	钟海霞
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	王雪妹
	范佳宝

关键词: 离子液体 EMIC 铝钛合金氯化铝耐腐蚀性

Abstract: This study focuses on optimizing the electrodeposition process of Al-Ti alloy coatings by regulating Ti content and enhancing corrosion resis-tance for high-performance protective applications. Al-Ti alloy coatings were prepared on a copper substrate using a constant current method, with an electrolyte composed of a 2∶1 molar ratio of AlCl₃ to 1-ethyl-3-methylimidazolium chloride (EMIC) ionic liquid and potassium fluorotita-nate (K₂TiF₆) as the Ti source. By adjusting the current density (10—20 mA/cm²) and electrodeposition time (45—120 min), the effects on the morphology, composition, and corrosion resistance of the coatings were systematically investigated. It was observed that the Ti content in the coatings significantly increases with increasing current density, while the densification of the coatings improves at higher current densities. At a current density of 20 mA/cm² and an electroplating time of 60 min, the Ti content reaches its maximum value of 20.43%. Electrochemical tests showed that the self-corrosion current density decreases significantly from 56.520 μA/cm² to 1.068 μA/cm² with increasing current density. A passivation phenomenon is observed at a current density of 15 mA/cm², characterized by a plateau region in the anodic polarization curve. With increasing electrodeposition time, the charge transfer resistance and film resistance of the coatings increases. At an electroplating time of 90 min, the densification of the coatings is further enhanced, resulting in a slower electrochemical reaction rate and significantly improved protective performance. The coatings prepared at a current density of 15 mA/cm² and an electroplating time of 90 min exhibit optimal corrosion resistance.

Key words: ionic liquid EMIC Al-Ti alloy AlCl₃ corrosion resistance

出版日期: 2026-01-25 发布日期: 2026-01-27

ZTFLH:

TG174

基金资助: 国家重点研发计划“材料基因工程关键技术与支撑平台”重点专项(2017YFB0702100)

通讯作者: *钟庆东,上海大学材料科学与工程学院教授、博士研究生导师。目前主要从事冶金电化学、材料腐蚀与防护、纳米技术应用等方面的研究工作。qdzhong@shu.edu.cn

作者简介: 钟海霞,上海大学材料科学与工程学院硕士研究生,在钟庆东教授的指导下进行研究。目前主要研究领域为电化学腐蚀。

引用本文:

钟海霞, 钟庆东, 杨健, 章书剑, 王雪妹, 范佳宝. AlCl₃-EMIC离子液体电沉积Al-Ti合金及耐蚀性研究[J]. 材料导报, 2026, 40(2): 24100244-7.
ZHONG Haixia, ZHONG Qingdong, YANG Jian, ZHANG Shujian, WANG Xuemei, FAN Jiabao. Study on Electrodeposition of Al-Ti Alloy in AlCl₃-EMIC Ionic Liquid and Its Corrosion Resistance. Materials Reports, 2026, 40(2): 24100244-7.

链接本文:

https://www.mater-rep.com/CN/10.11896/cldb.24100244 或 https://www.mater-rep.com/CN/Y2026/V40/I2/24100244

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