THE INHIBITION OF IRON CORROSION BY ACETYLENIC ALCOHOLS IN ACID-SOLUTIONS AT HIGH-TEMPERATURE

被引：40
|
作者：
FIAUD, C
HARCH, A
MALLOUH, D
TZINMANN, M
机构：
[1] Laboratoire d'Etudes de la Corrosion, E.N.S.C.P., 75231 Paris Cedex 05
来源：
CORROSION SCIENCE | 1993年 / 35卷 / 5-8期
关键词：
D O I：
10.1016/0010-938X(93)90369-R
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The inhibitive behaviour of acetylenic alcohols in acid media (0.1 N H2SO4 and 1 N HCI) at high temperature was studied on iron by combining electrochemical tests up to 120-degrees-C and surfaces analyses. The inhibitors tested (octynol and propynol) proved to be efficient at high temperatures. They acted primarily by electrosorption on the iron, then through the formation of a dimer (in sulphuric medium) or a short-chain polymer (in hydrochloric medium), which remained stable at high temperature. A catalytic effect of the Cl- ions on the polymerization process was postulated.
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页码：1437 / 1444
页数：8
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