含NH4SCN的NaCl水溶液中电化学充氢稳定性：溶液化学变化的影响

IF 10.3 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Corrosion Science Pub Date : 2025-06-01 Epub Date: 2025-03-03 DOI:10.1016/j.corsci.2025.112843

Saya Ajito, Yusuke Kabasawa, Hiroshi Kakinuma, Motomichi Koyama, Eiji Akiyama

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引用次数: 0

摘要

采用电化学氢渗透试验研究了在3 wt% NaCl含NH4SCN水溶液中恒电位极化过程中电化学氢向铁充电的稳定性。当样品在−0.9 V （vs. Ag/AgCl(3.33 M KCl)）、−1.1 V和−1.3 V的电位下极化时，吸氢率保持稳定。然而，当极化电位为−1.6 V时，氢气吸收率随时间波动较大。这种波动归因于溶液化学的变化，其中由于SCN -在Pt对电极上的氧化反应，质子浓度增加而SCN -浓度降低。

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Stability of electrochemical hydrogen charging in NaCl aqueous solution containing NH4SCN: Effect of changes in solution chemistry

Stability of electrochemical hydrogen charging to iron during potentiostatic polarization in a 3 wt% NaCl aqueous solution containing NH₄SCN was investigated using electrochemical hydrogen permeation tests. The hydrogen absorption rate remained stable when the specimen was polarized at potentials of −0.9 V (vs. Ag/AgCl (3.33 M KCl)), −1.1 V, or −1.3 V. However, at polarization potential of −1.6 V, the hydrogen absorption rate fluctuated considerably over time. This fluctuation was attributed to changes in solution chemistry, where the proton concentration increased and the SCN^– concentration decreased because of the oxidation reaction of SCN^– on the Pt counter electrode.

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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.