English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

An eco-friendly and economical chromium-free composite passivation solution was prepared from ammonium molybdate, nanosilica sol, tannic acid, and silane coupling agents KH151 and KH792. This solution was coated onto galvanized steel and the micro-morphology, chemical composition, as well as corrosion resistance of the resulting film were analyzed via various methods. As a novel chromiumfree composite passivation film, this coating combined the benefits of molybdate passivation and organosilane passivation. That is, the corrosion electrochemical reaction was inhibited, film exhibited high resistance, reaction speed decreased, and corrosion resistance increased. In addition, Mo inhibited the generation and development of micro-cracks, resulting in improved surface quality. The corrosion resistance of this passivation film was significantly higher than that of the silane passivation film. Furthermore, the optimal corrosion resistance of the galvanized steel was realized at a coating amount of 1252 mg/m 2 . This work can serve as a reference for developing passivation technology for galvanized steel.

Electrochemical Corrosion Behavior of Chromium-Free Composite Passivation Film on Galvanized Steel