open access publication

Article, 2024

Effect of iron powder on zinc reactivity and anticorrosion performance of zinc-rich epoxy coatings

Progress in Organic Coatings, ISSN 1873-331X, 0300-9440, Volume 190, Page 108403, 10.1016/j.porgcoat.2024.108403

Contributors

Qi, Chunping 0000-0002-9098-1425 [1] Dam-Johansen, Kim Dam- 0000-0003-1658-6176 [1] Weinell, Claus Erik 0000-0001-7178-4808 [1] Wu, Hao 0000-0003-0462-2491 (Corresponding author) [1]

Affiliations

  1. [1] Technical University of Denmark
    2. [NORA names: DTU Technical University of Denmark; University; Denmark; Europe, EU; Nordic; OECD]

Abstract

This study investigated the impact of iron powder on zinc reactivity and anticorrosion performance of zinc-rich epoxy (ZRE) coatings. Incorporating iron powder into ZRE coatings enhanced their overall anticorrosion performance, as evidenced by improved cathodic protection and reduced rust creep in salt spray tests. Furthermore, salt spray and EIS tests on cracked ZRE coatings demonstrated the enhanced sacrificial cathodic protection and physical barrier property with the inclusion of iron powder, attributed to the promoted sacrificial oxidation of zinc particles at damaged areas. The enhanced zinc dissolution in the presence of iron powder was also observed in immersion tests and potentiodynamic polarization tests on compressed Zn and ZnFe pellets.

Keywords

EIS, EIS tests, Zn, ZnFe, anticorrosion, anticorrosion performance, area, barrier properties, cathodic protection, coating, creep, damaged area, dissolution, effect, effect of iron powder, epoxy, epoxy coating, immersion, immersion test, impact, inclusion, iron, iron powder, particles, pellets, performance, physical barrier properties, polarization tests, potentiodynamic polarization tests, powder, presence, presence of iron powder, properties, protection, reactivity, sacrificial cathodic protection, salt, salt spray, salt spray test, spray, spray test, study, test, zinc, zinc dissolution, zinc particles, zinc-rich epoxy, zinc-rich epoxy coatings

Funders

  • Czech Academy of Sciences
  • China Scholarship Council

Data Provider: Digital Science

LINKS
-

Matching Records in NORA

SUBJECTS
+

METRICS
+