彭光春, 贾文超, 乔芊芊, 张展, 黄康, 张天翼, 方涛, 王怡, 张博威. 铝合金表面水滑石薄膜的制备及其耐蚀性研究进展[J]. 工程科学学报, 2020, 42(1): 1-15. DOI: 10.13374/j.issn2095-9389.2019.08.28.003
引用本文: 彭光春, 贾文超, 乔芊芊, 张展, 黄康, 张天翼, 方涛, 王怡, 张博威. 铝合金表面水滑石薄膜的制备及其耐蚀性研究进展[J]. 工程科学学报, 2020, 42(1): 1-15. DOI: 10.13374/j.issn2095-9389.2019.08.28.003
PENG Guang-chun, JIA Wen-chao, QIAO Qian-qian, ZHANG Zhan, HUANG Kang, ZHANG Tian-yi, FANG Tao, WANG Yi, ZHANG Bo-wei. Research progress on the preparation and corrosion resistance of layered double hydroxides film on aluminum alloys[J]. Chinese Journal of Engineering, 2020, 42(1): 1-15. DOI: 10.13374/j.issn2095-9389.2019.08.28.003
Citation: PENG Guang-chun, JIA Wen-chao, QIAO Qian-qian, ZHANG Zhan, HUANG Kang, ZHANG Tian-yi, FANG Tao, WANG Yi, ZHANG Bo-wei. Research progress on the preparation and corrosion resistance of layered double hydroxides film on aluminum alloys[J]. Chinese Journal of Engineering, 2020, 42(1): 1-15. DOI: 10.13374/j.issn2095-9389.2019.08.28.003

铝合金表面水滑石薄膜的制备及其耐蚀性研究进展

Research progress on the preparation and corrosion resistance of layered double hydroxides film on aluminum alloys

  • 摘要: 铝合金具有密度小,比强度高等一系列优异的性能而受到研究者的关注,但其易腐蚀的特点严重制约了其应用范围,因此需要采取适当的方法增强其耐蚀性能。水滑石薄膜具有良好的耐蚀性与离子交换性能,近年来在铝合金表面改性技术的研究逐渐增多。本文介绍了多种制备水滑石薄膜的方法,探究不同实验条件对薄膜形貌与耐蚀性的影响;详述了几种常用的改性方法与原理,对目前研究中存在的局限性进行了讨论,并展望了未来研究的重点与发展方向。

     

    Abstract: Aluminum alloys have excellent properties such as low density and high strength-to-weight ratio. However, the negative standard electrode potential of aluminum leads to a more active chemical property and is prone to corrode; as a result, the poor corrosion resistance extremely limits the widespread application of aluminum. Therefore, it is necessary to take appropriate measures to improve the poor corrosion resistance of aluminum alloys. The chromate passivation technology is one of the most effective and mature aluminum alloy surface treatment technologies, and even if the formed passivation film is very thin, it can still greatly enhance the corrosion resistance of aluminum alloys and provide corrosion protection. However, Cr (VI) and its derivatives are highly toxic and carcinogenic, and they are harmful to the environment and the human body. As environmental awareness increases and the government strictly limits the use and emission of chromate, it is necessary to develop new treatments that are environmentally friendly and non-toxic to improve the corrosion resistance of aluminum alloys. The fabrication process of layered double hydroxides (LDHs) film is simple, and the morphology of the LDHs film can be controlled by adjusting the experimental parameters. The prepared LDHs film also has good corrosion resistance and anions exchange performance. Therefore, reports of in-situ growth LDHs film on the surface aluminum alloys have gradually increased in recent years. In this paper, we introduced a variety of methods for preparing LDHs film, such as ordinary hydrothermal, urea hydrolysis, and hexamethylenetetramine hydrolysis methods, and summarized the effects of different experimental conditions on the morphology and corrosion resistance of LDHs the films. Several commonly used modification methods and principles, such as the preparation of superhydrophobic films and self-healing films, were discussed in detail and the limitations of the current research were discussed. Finally, the focus of future research and development were described.

     

/

返回文章
返回