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Alternating current impedance: utility in evaluating phosphate coating, phosphorus-chromium rinse, and paint performance

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1021/bk-1986-0322.ch006
AuthorSearch for: 1; Search for: 1; Search for: 1
Affiliation
  1. National Research Council Canada. NRC Industrial Materials Institute
FormatText, Book Chapter
Abstract
Surface preparation methods are related to impedance behavior of painted aluminum-killed 1006 steel in a 3 weight percent sodium chloride solution. Variation of phosphating time, anodic phosphating, phosphochromic rinse, paint thickness, temperature of test solution and immersion time are studied using two different types of paints. For porous coatings, the beneficial effects of phospho-chromic rinse is confirmed. Decrease in coating resistance and increase in capacitance are observed with increasing time of immersion as well as with increasing test temperature. Progress in deterioration is indicated by the appearance of Warburg-type behavior. Good protection is obtained by phosphating for 5 minutes.
Publication date
PublisherAmerican Chemical Society
In
  • Polymeric Materials for Corrosion Control: 58–76.
Series
  • ACS Symposium Series 322.
LanguageEnglish
Peer reviewedYes
NRC numberCNRC 26584
NRC-IGM86-202-430
NPARC number23003995
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Record identifier2db925d3-856f-4d60-8e54-c3e505f863a4
Record created2018-09-12
Record modified2020-06-10
Date modified: