A synergistic effect between gluconate and molybdate on corrosion inhibition of recirculating cooling water systems

被引：59

作者：

Ou, Hsin-Hung ^{[1
]}

Quynh Thi Phuong Tran ^{[2
]}

Lin, Po-Hsun ^{[3
]}

机构：

[1] China Steel Corp, New Mat Res & Dev Dept, 1 Chung Kung Rd, Kaohsiung 81233, Taiwan

[2] Natl Taiwan Univ, Grad Inst Environm Engn, 71 Chou Shan Rd, Taipei 10673, Taiwan

[3] Ming Chi Univ Technol, Dept Safety Hlth & Environm Engn, 84 Gungjuan Rd, New Taipei 24301, Taiwan

来源：

CORROSION SCIENCE | 2018年 / 133卷

关键词：

Corrosion inhibitor; Closed-loop cooling water system; Gluconate; Molybdate; Carbon steel; CARBON-STEEL; CALCIUM GLUCONATE; MILD-STEEL; SODIUM GLUCONATE; CHLORIDE SOLUTIONS; PITTING CORROSION; CHROMIUM; BLENDS; SCALE; ANION;

D O I：

10.1016/j.corsci.2018.01.014

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new corrosion inhibitor (NCI) consisting of gluconate along with a relatively low amount of molybdate and nitrite was developed. A synergistic effect between molybdate and gluconate on the corrosion inhibition of C-steel was investigated. The polarization measurement indicates that the corrosion of C-steel in the presence of gluconate is thermodynamically and kinetically unfavorable as compared to that with molybdate alone. According to FIB-SEM, FITR, and XPS experiments, an inhibition mechanism is proposed whereby the gluconate could bridge the molybdate and iron, which is responsible for the formation of the protective film against the corrosion of C-steel.

引用

页码：231 / 239

页数：9

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