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

Journal of Chuxiong Normal University ›› 2025, Vol. 40 ›› Issue (3): 69-75.

• Life Science and Chemistry • Previous Articles Next Articles

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

Abstract

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

CLC Number:

TG174.42

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

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