Technical Note: Determination of Blister Formation of External Pipeline Coatings Based on Current Spikes in the Cathodic Disbondment Test

被引：1

作者：

Papavinasam, S. ^{[1
]}

Attard, M. ^{[1
]}

Revie, R. W. ^{[1
]}

机构：

[1] Nat Resources Canada, CANMET Mat Technol Lab, Ottawa, ON K1A 0G1, Canada

来源：

CORROSION | 2009年 / 65卷 / 10期

关键词：

blisters; cathodic disbandment test; corrosion; pipeline coatings;

D O I：

10.5006/1.3319090

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A modified cathodic disbondment (CD) test was carried out over a period of 14 months using 13 different pipeline coatings. During the test the current was recorded every 4 h. Certain types of coatings developed blisters after 60 days. The formation of the blisters resulted in characteristic spikes in the current. Other modes of failures-wrinkling, disbandment, and slipping-did not exhibit such current spikes. By conducting the CD test for a minimum duration of 60 days and by recording the current during the test, the susceptibility of coating to blistering can be evaluated. making the CD test even more useful.

引用

页码：639 / 644

页数：6