三七提取物在盐酸中对钢的缓蚀作用

楚雄师范学院学报 ›› 2025, Vol. 40 ›› Issue (3): 69-75.

三七提取物在盐酸中对钢的缓蚀作用

陈文, 郭映成, 杨媛舒, 李春娟, 张红艳, 胡云霄

楚雄师范学院资源环境与化学学院,云南楚雄 675000

收稿日期:2025-02-01 出版日期:2025-05-20 发布日期:2025-07-01
作者简介:陈文（1973–）,男,博士,副教授,研究方向为金属腐蚀与防护。
基金资助:
国家自然科学基金项目（No. 51361001）

Inhibition Effect of Panatx Notoginseng Extractive on the Corrosion of Steel in Hydrochloric Acid Solution

CHEN Wen, GUO Yingcheng, YANG Yuanshu, LI Chunjuan, ZHANG Hongyan, HU Yunxiao

School of Resources, Environment and Chemistry, Chuxiong Normal University, Chuxiong, Yunnan Province 675000

Received:2025-02-01 Online:2025-05-20 Published:2025-07-01

摘要/Abstract

摘要： 采用浸提方式得到的三七提取物（PNE）作为金属缓蚀剂,利用失重法和电化学方法研究了其对Q235钢在1 mol·L^-1盐酸溶液中的缓蚀作用,以期为开发和利用植物型酸洗缓蚀剂提供实验依据。结果表明,PNE能够延缓金属腐蚀反应的速率,机理上属于混合型缓蚀剂;其缓蚀性能与PNE浓度呈正相关,随测试温度升高而变弱。PNE分子在钢表面的吸附符合Langmuir等温吸附方程,吸附会导致腐蚀反应活化能升高,从而降低反应速率。

关键词: Q235钢, 三七提取物, 吸附, 缓蚀

Abstract: Panatx notoginseng extractive (PNE) achieved by immersion was investigated as a corrosion inhibitor for Q235 steel in 1 mol·L^-1 HCl solution by means of the weight loss and electrochemical methods, with a view to providing experimental bases for the development and utilization of plant-type pickling corrosion inhibitors. The results showed that PNE could retard the rate of metal corrosion reaction, and belongs to mixed-type inhibitor in mechanism. The corrosion inhibition performance for PNE is positively correlated with its own concentration, which becomes weaker with the increase of test temperature. The adsorption of PNE molecules conforms to the Langmuir equation, and leads to the elevation of activation energy of the corrosion reaction and then reduces the reaction rate.

Key words: Q235 steel, Panatx notoginseng extractive (PNE), adsorption, inhibition

中图分类号:

TG174.42

陈文, 郭映成, 杨媛舒, 李春娟, 张红艳, 胡云霄. 三七提取物在盐酸中对钢的缓蚀作用[J]. 楚雄师范学院学报, 2025, 40(3): 69-75.

CHEN Wen, GUO Yingcheng, YANG Yuanshu, LI Chunjuan, ZHANG Hongyan, HU Yunxiao. Inhibition Effect of Panatx Notoginseng Extractive on the Corrosion of Steel in Hydrochloric Acid Solution[J]. Journal of Chuxiong Normal University, 2025, 40(3): 69-75.

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