Carbon steel anticorrosion performance and mechanism of sodium lignosulfonate

Bo-Kai Liao ¹Rui-Xuan Quan ¹Ping-Xian Feng ¹Huan Wang ¹Wei Wang ¹Li Niu¹

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作者信息

1. School of Chemistry and Chemical Engineering,Guangzhou Key Laboratory of Sensing Materials and Devices,Joint Institute of Guangzhou University and Institute of Corrosion Science and Technology,Guangzhou University,Guangzhou 510006,China
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Abstract

Lignin is a typical biological macromolecule with a three-dimensional network structure and abundant functional groups.It has excellent ionic complexation ability and amphiphilic molecular structure characteristics.In this study,the carbon steel anticorrosion performance of sodium lignosulfonate(SLS)in an acid solution was evaluated using the weight loss method,electrochemical measurements,scanning vibration electrode technique(SVET),and surface characterization methods.SLS exhibited excellent corrosion inhibition efficiency for Q235 carbon steel in 1 mol·L-1 HCl,reaching a maximum value of 98％.A low SLS concentration of 20 mg·L-1 resulted in the maximum corrosion inhibition efficiency,which remained nearly constant at higher SLS concentrations.The SVET test demonstrated that the formation of an SLS adsorption film can impede corrosion.This study confirms the significance of the application of green biomass resources in the field of metal corrosion protection and green functional materials.

Key words

Lignin/Sodium lignosulfonate/Corrosion inhibitor/Carbon Steel

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基金项目

National Natural Science Foundation of China(22278092)

National Natural Science Foundation of China(52001080)

Science and Technology Research Project of Guangzhou(GI202111)

Platform Research Capability Enhancement Project of Guangzhou University(69-620939)

Guangzhou University's 2020 Training Program for Talent(69-62091109)

Key Discipline of Materials Science and Engineering,Bureau of Education of Guangzhou(202255464)

出版年

2024

稀有金属(英文版)

中国有色金属学会

稀有金属(英文版)

CSTPCDCSCDEI

影响因子：0.801

ISSN：1001-0521

参考文献量46

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