Probing transformation of Ag/AgCl chloride-sensing electrode interface in concrete pore solution

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science Pub Date : 2025-01-28 DOI:10.1016/j.corsci.2025.112747

Zhangmin Zhang , Shaolong Liu , Qiang You , Yangyang Wang , Xinran Li , Fahe Cao , Jie Hu , Jiangxiong Wei , Qijun Yu , Guoqing Geng

引用次数: 0

Abstract

Ag/AgCl chloride-sensing electrode has been designed to monitor chloride concentrations in reinforced concrete. However, the interface transformation of Ag/AgCl electrode in concrete pore solution is not clarified. In this work, the transformation process of the same Ag/AgCl electrode in cement extract was monitored by EIS and SECM, followed by surface analysis. Dense AgCl film degraded into porous one, but the exposed Ag substrate was activated temporarily by Cl^- in 10 min. The Ag substrate without AgCl covered can be easily absorbed by OH^-, leading to alterations in the electrode potential during Cl^- response.

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来源期刊

Corrosion Science 工程技术-材料科学：综合

CiteScore

13.60

自引率

18.10%

发文量

763

审稿时长

46 days

期刊介绍： Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.