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.
|Publication status||Published - 2009|
|Event||NACE Corrosion 2009: Conference & Expo - Atlanta, United States|
Duration: 22 Mar 2009 → 26 Mar 2009
|Conference||NACE Corrosion 2009|
|Period||22/03/2009 → 26/03/2009|
Bibliographical note© 2009 by NACE International.
- Corrosion protection
- Rust creep
- Zinc pigment
- Zinc silicate