POLARIZATION UNDER DISBONDED COATINGS - CONVENTIONAL AND PULSED CATHODIC PROTECTION COMPARED

Authors
DIAKOW DA VANBOVEN GJ WILMOTT MJ
Citation
Da. Diakow et al., POLARIZATION UNDER DISBONDED COATINGS - CONVENTIONAL AND PULSED CATHODIC PROTECTION COMPARED, Materials performance, 37(5), 1998, pp. 17-23
Citations number
12
Categorie Soggetti
Materials Science, Characterization & Testing
Journal title
Materials performance → ACNP
ISSN journal
00941492
Volume
37
Issue
5
Year of publication
1998
Pages
17 - 23
Database
ISI
SICI code
0094-1492(1998)37:5<17:PUDC-C>2.0.ZU;2-5
Abstract
Disbonded coatings over pipeline steel can often lead to serious corro sion problems that cannot be controlled by conventional cathodic prote ction (CP) systems. CP effective ness is limited by the high resistanc e electrical path in the crevice between the steel and coating. Polari zation experiments were conducted using conventional and pulsed CP. Ce rtain pulsed waveforms increased the distance achieving protective pot entials in a crevice.