铈/二乙基二硫代氨基甲酸盐配合物作为AA2024-T3的新型缓蚀颜料。

Cerium/diethyldithiocarbamate complex as a novel corrosion inhibitive pigment for AA2024-T3.

作者信息

Mohammadi Iman, Shahrabi Taghi, Mahdavian Mohammad, Izadi Mazdak

机构信息

Department of Materials Engineering, Faculty of Engineering, Tarbiat Modares University, P. O. Box 14115-143, Tehran, Iran.

Surface Coatings and Corrosion Department, Institute for Color Science and Technology, Tehran, Iran.

出版信息

Sci Rep. 2020 Mar 19;10(1):5043. doi: 10.1038/s41598-020-61946-8.

DOI:10.1038/s41598-020-61946-8

PMID:32193480

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7081301/

Abstract

In this work, cerium-diethyldithiocarbamate (Ce-DEDTC) complex was synthesized as a novel anti-corrosion pigment. The structure of the synthesized pigment was characterized by employing Fourier transfer infrared spectroscopy, X-ray diffraction, thermogravimetric analysis, inductively coupled plasma optical emission spectroscopy, and ultraviolet-visible spectroscopy. All of the characterization techniques showed that the Ce-DEDTC pigment was successfully produced. The electrochemical tests were used to investigate the subsequence effect of the synthesized complex on the corrosion behavior of the AA2024-T3. AA2024-T3 showed a wide passive range in the presence of the Ce-DEDTC pigment. Scanning electron microscopy, optical microscopy, X-ray photoelectron spectroscopy, and contact angle tests were employed to investigate the effect of the synthesized pigment on aluminum surface properties. The result illustrated that the existence of the Ce-DEDTC complex led to the creation of a thin film on the AA2024-T3 surface, which was significantly inhibited the localized corrosion of the aluminum alloy.

摘要

在本工作中，合成了二乙基二硫代氨基甲酸铈（Ce-DEDTC）配合物作为一种新型防腐颜料。采用傅里叶变换红外光谱、X射线衍射、热重分析、电感耦合等离子体发射光谱和紫外可见光谱对合成颜料的结构进行了表征。所有表征技术均表明成功制备了Ce-DEDTC颜料。采用电化学测试研究了合成配合物对AA2024-T3腐蚀行为的后续影响。在Ce-DEDTC颜料存在下，AA2024-T3表现出较宽的钝化范围。采用扫描电子显微镜、光学显微镜、X射线光电子能谱和接触角测试来研究合成颜料对铝表面性能的影响。结果表明，Ce-DEDTC配合物的存在导致在AA2024-T3表面形成了一层薄膜，这显著抑制了铝合金的局部腐蚀。