Harmonic analysis of carbon dioxide corrosion

被引：20
|
作者：
Durnie, W [1 ]
De Marco, R [1 ]
Jefferson, A [1 ]
Kinsella, B [1 ]
机构：
[1] Curtin Univ Technol, Sch Appl Chem, Western Australian Corros Res Grp, Perth, WA 6845, Australia
来源：
CORROSION SCIENCE | 2002年 / 44卷 / 06期
基金：
澳大利亚研究理事会;
关键词：
carbon dioxide corrosion; harmonic analysis; linear polarisation;
D O I：
10.1016/S0010-938X(01)00136-6
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Harmonic analysis (HA) has been trialed as a method for the monitoring of carbon dioxide corrosion of mild steel under a variety of conditions, i.e., in the presence and absence of hydrocarbons along with corrosion inhibitors. It has been found that it is necessary to include the third harmonic current in order to obtain reliable corrosion rates by HA. A systematic error of approximately 100% was evident in a comparison of 2500 HA corrosion rates against comparable data obtained by using linear polarisation (LP) in conjunction with assumed Tafel slopes. Conversely, a correlation of recalculated LP data by using the HA determined Tafel slopes yielded comparable corrosion rates by HA and LP. This outcome suggests that HA is capable of providing a higher degree of accuracy in studies of carbon dioxide corrosion, as compared to LP, due to the former technique's ability to determine simultaneously the Tafel slopes and corrosion rates. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：1213 / 1221
页数：9
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