Titanium, zirconium and vanadium conversion coatings (TZVCCs) on AZ91D magnesium alloy sheets | Zendy

Wen Zhu | Zendy; Furui Chen | Zendy; Aihua Yi | Zendy; Zhongmiao Liao | Zendy; Wenfang Li | Zendy; Kang Li | Zendy; Ken Chen | Zendy; Guofeng Liang | Zendy; Jintao Guo | Zendy; Qing Wu | Zendy

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Titanium, zirconium and vanadium conversion coatings (TZVCCs) on AZ91D magnesium alloy sheets

Author(s) -

Wen Zhu,

Furui Chen,

Aihua Yi,

Zhongmiao Liao,

Wenfang Li,

Kang Li,

Ken Chen,

Guofeng Liang,

Jintao Guo,

Qing Wu

Publication year - 2020

Publication title -

materials research express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.383

H-Index - 35

ISSN - 2053-1591

DOI - 10.1088/2053-1591/ababbe

Subject(s) - materials science , conversion coating , corrosion , vanadium , zirconium , microstructure , alloy , magnesium , titanium , metallurgy , coating , magnesium alloy , x ray photoelectron spectroscopy , chemical engineering , composite material , engineering

This paper reports the preparation, characterization, and corrosion resistance of an eco-friendly titanium/zirconium/vanadium-based conversion coating (TZVCC) on an AZ91D magnesium alloy sheet. The TZVCC microstructure and composition were investigated by SEM, EDS, and XPS. The corrosion behavior of treated and untreated magnesium alloy sheets was observed by potentiodynamic polarization and EIS. The coatings are found to be rapidly formed on the alloy exterior within 90 s and optimal conversion treatment time at 50 s. The primary components of the TZVCC were MgO, Mg(OH) 2 , V 2 O 5 , V 2 O 3 , MgF 2 , TiO 2 , ZrO 2 and metal-organic complexation. The coating was also shown to markedly enhance the corrosion resistance performance of magnesium alloys.

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