Hydrogen permeation studied by electrochemical techniques

被引：41

作者：

Azevedo, C

Bezerra, PSA

Esteves, F

Joia, CJBM

Mattos, OR

机构：

[1] Fed Univ Rio De Janeiro, COPPE, PEMM, EE, Rio De Janeiro, Brazil

[2] Fundacao Brasileira Tecnol Soldagem, BR-20550011 Rio De Janeiro, Brazil

[3] Petrobras SA, R&D, CENPES, DIPLOT,SEMEC, BR-21949900 Rio De Janeiro, Brazil

来源：

ELECTROCHIMICA ACTA | 1999年 / 44卷 / 24期

关键词：

hydrogen permeation; H2S corrosion; impedance; corrosion monitoring;

D O I：

10.1016/S0013-4686(99)00158-9

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

In this paper impedance measurements, weight loss and hydrogen permeation tests were used to characterise the H2S corrosion process. In a classical permeation cell, where a steel membrane is separating two electrolytic solutions, it was seen that the detection of hydrogen diffusing through the steel is totally controlled by the anodic reactions occurring at the steel/H2S interface. Solutions with different aggressiveness were used to define the maximum acceptable permeation current to avoid cracks nucleation and propagation. From these tests a procedure was developed to monitor hydrogen induced cracking (HIC) in industrial plants. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：4431 / 4442

页数：12