Complex films formed on Al alloy surface via vapor phase assembly of benzotriazole and dodecyltrimethoxysilane
Anti-Corrosion Methods and Materials
ISSN: 0003-5599
Article publication date: 30 May 2023
Issue publication date: 13 June 2023
Abstract
Purpose
The purpose of this paper is to study the effect of vapor assembly sequence and assembly temperature on the corrosion protection of the complex silane films Al alloy. The performance and application range of silane films are enhanced.
Design/methodology/approach
The complex silane films were successfully prepared on the surface of aluminum alloy using via vapor phase assembly of 1,2,3-benzotriazole (BTA) and dodecyltrimethoxysilanes (DTMS). The protection of the assembly films against corrosion of Al alloy is investigated by the electrochemical measurements and the alkaline solution accelerated corrosion test. Thickness and hydrophobicity of the complex films are studied using ellipsometric spectroscopy and contact angle tests.
Findings
It shows that the anti-corrosion ability of the complex films is overall superior to that of the single-component assembled films. DTMS-BTA films have larger thickness and best anti-corrosion ability. The alkyl chains in DTMS have better compatibility with BTA molecules. The rigid BTA molecule can permeate into the long alkyl chain of DTMS as fillers and improve the barrier properties of the complex films.
Originality/value
In this paper, a green and efficient method of vapor phase assembly is proposed to rust prevention during manufacture of Al alloy workpiece.
Keywords
Acknowledgements
This work is benefited by the Natural Science Foundation of China (5207010005), and the research is also supported by Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power.
CRediT authorship contribution statement: Qiang Wang: conceptualization, methodology, investigation, software, writing – original draft. Hongliang Zhang: validation, formal analysis, visualization. Hongai Zheng: supervision, data curation, writing – review and editing. Daquan Zhang: resources, funding acquisition, formal analysis, writing – review and editing. Lixin Gao: supervision, writing – review and editing.
Declaration of competing interest: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
Citation
Wang, Q., Zhang, H., Zhang, D.Q., Zheng, H. and Gao, L. (2023), "Complex films formed on Al alloy surface via vapor phase assembly of benzotriazole and dodecyltrimethoxysilane", Anti-Corrosion Methods and Materials, Vol. 70 No. 4, pp. 182-188. https://doi.org/10.1108/ACMM-03-2023-2772
Publisher
:Emerald Publishing Limited
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