Photocatalystic Cathodic Protection of TiO2 Coating on AZ31 Magnesium Alloy

Zhen Lin Wang

doi:10.4028/www.scientific.net/MSF.686.280

Paper Titles

Microstructures and Mechanical Properties of As-Cast and Extruded Mg-2wt.%Zn Alloy Containing Dilute Content of Misch Metal
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Microstructures and Mechanical Properties of Heat-Resistant High-Pressure Die-Cast Mg-4Al-6RE-0.3Mn (RE= La, Ce, Pr, Nd, Wt.%) Alloys
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Observation of Microstructural Refinement in Mg-3Sn-2Ca Magnesium Alloy Containing Minor Sr
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Effect of Nd Addition on a Mg-Zn-Bi Magnesium Alloy
p.276

Photocatalystic Cathodic Protection of TiO₂ Coating on AZ31 Magnesium Alloy
p.280

Preparation of Mg-Cu-Y and Mg-Ni-Gd Based Amorphous Brazing Material
p.287

Research on Corrosion Resistance of AZ91D Magnesium Alloy Coated with Epoxy Resin
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Research on Heat Transfer during LFEC Processing by In Situ Temperature Measurement
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Researches on a Composite Extrusion Approach Based on FEM Method and Experiments
p.305

HomeMaterials Science ForumMaterials Science Forum Vol. 686Photocatalystic Cathodic Protection of TiO2...

Photocatalystic Cathodic Protection of TiO₂ Coating on AZ31 Magnesium Alloy

Abstract:

Nano TiO₂ and S, N co-doped TiO₂ composite coatings with WO₃ transitional layer were deposited on AZ31 magnesium alloy by sol-gel method. The morphologies, structure, mechanical properties, compositional depth profiles and anti-corrosion performance of the as prepared coatings were characterized by scanning electron microscope, X-ray diffraction, nanoscratch test, glowing discharge optical emission spectrometry and electrochemical method, respectively. The results show that the nano TiO₂coatings are continuous, uniform and dense with thickness ca.3-5μm, elements in the interface diffuse mutually during heat treatment; S-N co-doped TiO₂ enhances the interface adhesion, WO₃ transitional layer increases the total coating thickness and strengthens the adhesion to substrate with respect to unitary TiO₂ coating; S, N co-doped TiO₂ acts as visible light photocatalyst that can provide permanent cathodic protection for AZ31 magnesium using WO₃ as electron restoring material.

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Advanced Structural Materials, IUMRS-ICA 2010

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Materials Science Forum (Volume 686)

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280-286

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.686.280

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Online since:

June 2011

Authors:

Zhen Lin Wang

Keywords:

Cathodic Protection (CP), Magnesium Alloy, Photocatalyst, Sol-Gel (SG), TiO2 Coating

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