High-throughput assessment of corrosion inhibitor mixtures on carbon steel via droplet microarray. (1st April 2023)

• Record Type: Journal Article
• Authors: Ren, Chenhao; Ma, Lingwei; Luo, Xiejing; Dong, Chaofang; Gui, Taijiang; Wang, Bo; Li, Xiaogang; Zhang, Dawei
• Is Part Of: Corrosion science. Volume 213(2023)
• Publication Date: 2023-04-01
• Subjects: High-throughput experiment -- Corrosion inhibitor -- Droplet corrosion; Corrosion and anti-corrosives -- Periodicals; 620.11223
• DOI: 10.1016/j.corsci.2023.110967
• Languages: English
• ISSNs: 0010-938X

Abstract

Abstract: A high-throughput screening method for rapid laboratory evaluation of corrosion inhibitors was developed based on microarray consisting of up to 200 droplets of corrosion inhibitor solutions on one carbon steel substrate. The extent of corrosion on the steel under each single droplet was studied by tracking the variation of the 3D morphology of the corrosion product. Using this high-throughput screening platform, we evaluated the corrosion inhibition effect of benzotriazole and Ce(NO3 )3 mixture and identified their best mixing ratio. The enhanced inhibition of the inhibitor mixture was discussed based on the corrosion experimental data and the molecular dynamic simulation. Highlights: A high-throughput method is proposed for screening corrosion inhibitors for droplet corrosion. The degree of corrosion was evaluated by the 3D topography of the corrosion product. BTA and Ce(NO3 )3 mixture shows enhanced corrosion inhibition for Q235 steel. The enhanced corrosion inhibition is explained based on experimental results and MD simulation.