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Strontium-based nanosized phosphates as anticorrosive fi llers of epoxy and polyurethane coating compositions
Abstract
Anticorrosive epoxy and polyurethane coatings were compounded using zinc-free nanosized phosphates of strontium
(SP) or strontium and aluminum (SAP). For comparison, a nanosized calcium aluminum ammonium phosphate
(CAP) and a microsized zinc phosphate (ZP) were tested. Results of salts spray and cyclic corrosion tests revealed
better anticorrosive properties of the SAP-based coatings in relation to the samples with the other Zn-free fi llers
or ZP. Electrochemical noise tests of uncoated steel in aqueous suspensions of the phosphates exhibited similar
corrosion inhibition effi ciency of the Sr-based phosphates and ZP, and worse anticorrosive features of CAP.
Electrochemical impedance spectroscopy did not show better protective properties of ZP-based coatings than the
samples with the Zn-free fi llers.
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Details
- Category:
- Magazine publication
- Type:
- Magazine publication
- Published in:
-
Polish Journal of Chemical Technology
no. 21,
edition 2,
pages 52 - 58,
ISSN: 1509-8117 - Publication year:
- 2019
- DOI:
- Digital Object Identifier (open in new tab) 10.2478/pjct-2019-0020
- Verified by:
- No verification
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