Preparation and Characterization of Vanadium/Silane Composite Conversion Coating on AZ31B Magnesium Alloy

DONG Lihui; WANG Hua; LI Lin

doi:10.16490/j.cnki.issn.1001-3660.2024.04.003

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Surface Technology ›› 2024, Vol. 53 ›› Issue (4) : 34-45. DOI: 10.16490/j.cnki.issn.1001-3660.2024.04.003

Corrosion and Protection

Preparation and Characterization of Vanadium/Silane Composite Conversion Coating on AZ31B Magnesium Alloy

DONG Lihui, WANG Hua, LI Lin

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Abstract

A single vanadate conversion coating can improve the corrosion resistance of magnesium alloy, but there are cracks and holes on the surface of vanadate conversion coating. In order to improve the surface morphology and corrosion resistance of vanadate conversion coating, the work aims to use vanadate and silane to prepare vanadate/silane composite conversion coating on the AZ31B magnesium alloy by two-step method.

Key words

magnesium alloy; surface treatment; chemical conversion coating; vanadate; silane; corrosion resistance

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DONG Lihui, WANG Hua, LI Lin. Preparation and Characterization of Vanadium/Silane Composite Conversion Coating on AZ31B Magnesium Alloy[J]. Surface Technology. 2024, 53(4): 34-45