Evaluation of sodium hexametaphosphate as scale and corrosion inhibitor in cooling water using electrochemical techniques

被引：78

作者：

Abd-El-Khalek, D. E. ^{[1
]}

Abd-El-Nabey, B. A. ^{[2
]}

机构：

[1] Natl Inst Oceanog & Fisheries, Marine Chem Dept, Alexandria, Egypt

[2] Univ Alexandria, Fac Sci, Dept Chem, Alexandria 21321, Egypt

来源：

DESALINATION | 2013年 / 311卷

关键词：

Antiscalant; Corrosion; Polyphosphate; Electrochemical methods; CARBONATE; DEPOSITION; EXTRACT; SURFACE; EIS;

D O I：

10.1016/j.desal.2012.11.017

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The antiscale properties of sodium hexametaphosphate (SHMP) were studied using electrochemical impedance spectroscopy (EIS), and chronoamperometry techniques in conjunction with a microscopic examination. The corrosion inhibitive characteristics were investigated using EIS and potentiodynamic polarization measurements. Mineral scales were deposited from the brine solution by cathodic polarization of the steel surface at -0.9 V (vs. SCE). Comparative study was carried out between antiscalant efficiencies of SHMP and polyacrylic acid (PAA). Potentiodynamic polarization curves indicated that SHMP inhibits the corrosion of steel by controlling the cathodic oxygen reduction process. The results showed that SHMP can inhibit corrosion of steel and scale build-up under the conditions tested. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：227 / 233

页数：7

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