The disbondment test is a simple way of assessing the
effectiveness of the bond between the protective coating and the metal structure
that it is designed to preserve.
Steel structures such as pipes and tanks that are submerged
are usually protected by coatings bonded to its surface and by cathodic protection.
Many pipelines are protected by ICCP (Impressed Current Cathodic Protection) as
are large Boats and Ships. Any protective coating using this kind of protection
will need to be evaluated for Cathodic Disbondment.
There are a number of International Standards that define
the Disbondment test, however the use of a Reference Electrode is common to all.*
EDT manufacture and supply all types for the Cathodic
* International Standards include: DIN Norm 30670, DIN EN ISO 15711, ISO
21809 Part 1 Annex H, ASTM G-8, ASTM G-42.G-95.