Mechanism of Corrosion and Delamination of Painted Phosphated Steel During Accelerated Corrosion Testing Amchem Products Incorporated Ambler, PA

Format:

Conference/Event

Author/Creator:

Knaster, Mark B., author.

Conference Name:

SAE International Congress & Exposition (1986-02-24 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1986

Summary:

A THEORETICAL MODEL for the delamination of organic coatings from zinc-phosphated steel surfaces will be presented. It will be shown that under ambient conditions and in neutral NaCl media delamination occurs as a result of the formation of a surface-tension gradiant during oxygen depolarization and, subsequently, the disruption of adhesion at the coating-phosphate interface. Dissolution of the phosphate coating occurs only after adhesion is lost. An accelerated cathodic delamination test showing good correlation with the long-term GM-scab test will also be introduced

Notes:

Vendor supplied data

Publisher Number:

860110

Access Restriction:

Restricted for use by site license