Comparison of the corrosion resistance of zinc coatings obtained in baths with the addition of Al, Ni, Pb, Bi and Sn

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F22%3A00360550" target="_blank" >RIV/68407700:21220/22:00360550 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.15199/40.2022.7.1" target="_blank" >https://doi.org/10.15199/40.2022.7.1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.15199/40.2022.7.1" target="_blank" >10.15199/40.2022.7.1</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Comparison of the corrosion resistance of zinc coatings obtained in baths with the addition of Al, Ni, Pb, Bi and Sn

Popis výsledku v původním jazyce

The article presents the results of research on the influence of Al, Ni, Pb, Bi and Sn additives in a zinc bath on the microstructure and corrosion resistance of zinc coatings. The microstructure at high magnifications (SEM) was revealed on the surface and cross-section of the coatings, and the chemical composition in micro-regions was determined. The corrosion resistance of the coatings was tested comparatively in neutral salt spray (PN EN ISO 9227) and in a humid atmosphere containing sulfur compounds (PN EN ISO 6988). The electrochemical corrosion parameters of the coatings were determined. It was found that the coatings obtained in the baths containing Pb, Bi and BiSn additives showed lower corrosion resistance compared to the coatings obtained in the Zn-AlNi bath. The microstructural tests showed the occurrence of Pb, Bi and BiSn alloy precipitates in the coating. These precipitates have a more electropositive potential in relation to zinc, which favors the formation of additional corrosion cells.

Název v anglickém jazyce

Comparison of the corrosion resistance of zinc coatings obtained in baths with the addition of Al, Ni, Pb, Bi and Sn

Popis výsledku anglicky

The article presents the results of research on the influence of Al, Ni, Pb, Bi and Sn additives in a zinc bath on the microstructure and corrosion resistance of zinc coatings. The microstructure at high magnifications (SEM) was revealed on the surface and cross-section of the coatings, and the chemical composition in micro-regions was determined. The corrosion resistance of the coatings was tested comparatively in neutral salt spray (PN EN ISO 9227) and in a humid atmosphere containing sulfur compounds (PN EN ISO 6988). The electrochemical corrosion parameters of the coatings were determined. It was found that the coatings obtained in the baths containing Pb, Bi and BiSn additives showed lower corrosion resistance compared to the coatings obtained in the Zn-AlNi bath. The microstructural tests showed the occurrence of Pb, Bi and BiSn alloy precipitates in the coating. These precipitates have a more electropositive potential in relation to zinc, which favors the formation of additional corrosion cells.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

20506 - Coating and films

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Ochrona przed korozja

ISSN

0473-7733

e-ISSN

—

Svazek periodika

65

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

13

Strana od-do

203-215

Kód UT WoS článku

000835363500001

EID výsledku v databázi Scopus

2-s2.0-85135457499