Advancements in high performance zinc epoxy coatings

Lars Thorslund Pedersen, Claus Erik Weinell, Pascal Verbiest, Jeroen Van Den Bosch

Research output: Contribution to conferencePaperResearchpeer-review

Abstract

The present work investigates the use of alloyed zinc powders in zinc epoxy and zinc silicate coatings. It is found that small amounts bismuth have a dramatic effect on rust creep resistance while nickel and magnesium was not found to have any effect in the tested range. 0.5% bismuth in the zinc reduces rust creep by up to 80% after cyclic exposure according to ISO20340. With the alloyed zinc it is possible to formulate zinc epoxy coatings with rust creep below 1 mm in the test, thus achieving performance similar to what is know from zinc silicates.
Original languageEnglish
Publication date2009
Publication statusPublished - 2009
Externally publishedYes
EventNACE Corrosion 2009: Conference & Expo - Atlanta, United States
Duration: 22 Mar 200926 Mar 2009

Conference

ConferenceNACE Corrosion 2009
CountryUnited States
CityAtlanta
Period22/03/200926/03/2009

Bibliographical note

© 2009 by NACE International.

Keywords

  • Bismuth
  • Corrosion protection
  • Rust creep
  • Zinc pigment
  • Zinc silicate
  • Zinc-alloy

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