Corrosion inhibition effect of sodium silicate/triethanolamine complex inhibitor on AZ91D magnesium alloy in 50% ethylene glycol coolant

IF 2.6 4区化学 Q3 ELECTROCHEMISTRY Journal of Solid State Electrochemistry Pub Date : 2024-10-17 DOI:10.1007/s10008-024-06104-0

Jintai Pan, Junchao Huang, Fuli Deng, Dong Liu

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引用次数: 0

Abstract

Ethylene glycol solutions can cause severe corrosion in magnesium alloys, leading to safety and stability concerns. The addition of corrosion inhibitors to the environment is a simple and effective protective measure. This study introduces a compound corrosion inhibitor that combines inorganic and organic components, providing resistance to salts, high temperatures, and environmental factors. The corrosion inhibition of AZ91D magnesium alloy using a sodium silicate/triethanolamine compound inhibitor in 50% glycol coolant was investigated through electrochemical analysis, morphology characterization, and weight loss analysis. The results demonstrated that the sodium silicate/triethanolamine inhibitor effectively prevented corrosion of AZ91D magnesium alloy in 50% ethylene glycol, achieving a maximum inhibition efficiency of 96.4% with 2 g/L sodium silicate and 3 mL/L triethanolamine. The inhibitor exhibited continued effectiveness at elevated temperatures and showed minimal impact from external ions, providing strong protection for AZ91D magnesium alloy in glycol coolant. The outstanding performance can be attributed to the synergistic interaction of triethanolamine and sodium silicate, which form a protective film on the alloy’s surface. This compound inhibitor exhibits promising potential for safeguarding AZ91D magnesium alloy in similar environments. Furthermore, the proposed mechanism elucidates how the sodium silicate/triethanolamine mixture mitigates galvanic corrosion in the AZ91D magnesium alloy.

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来源期刊

Journal of Solid State Electrochemistry 工程技术-电化学

CiteScore

4.80

自引率

4.00%

发文量

227

审稿时长

4.1 months

期刊介绍： The Journal of Solid State Electrochemistry is devoted to all aspects of solid-state chemistry and solid-state physics in electrochemistry. The Journal of Solid State Electrochemistry publishes papers on all aspects of electrochemistry of solid compounds, including experimental and theoretical, basic and applied work. It equally publishes papers on the thermodynamics and kinetics of electrochemical reactions if at least one actively participating phase is solid. Also of interest are articles on the transport of ions and electrons in solids whenever these processes are relevant to electrochemical reactions and on the use of solid-state electrochemical reactions in the analysis of solids and their surfaces. The journal covers solid-state electrochemistry and focusses on the following fields: mechanisms of solid-state electrochemical reactions, semiconductor electrochemistry, electrochemical batteries, accumulators and fuel cells, electrochemical mineral leaching, galvanic metal plating, electrochemical potential memory devices, solid-state electrochemical sensors, ion and electron transport in solid materials and polymers, electrocatalysis, photoelectrochemistry, corrosion of solid materials, solid-state electroanalysis, electrochemical machining of materials, electrochromism and electrochromic devices, new electrochemical solid-state synthesis. The Journal of Solid State Electrochemistry makes the professional in research and industry aware of this swift progress and its importance for future developments and success in the above-mentioned fields.