Phosphate Conversion Coating on Diecast AZ91D and Its Corrosion Resistance

Wan Qiu Zhou; Da Yong Shan; En-Hou Han; Wei Ke

doi:10.4028/www.scientific.net/MSF.488-489.819

Paper Titles

Corrosion Resistance of Surface Treated AZ91D Magnesium Alloys Outdoor Exposure after 10 Years
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Optimization of Mg-Zn-Al-Ca-La Alloys for the Improvement of Casting Properties and Creep Resistance
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Electrochemical Behavior of Magnesium and Aluminium Ions in Alkali Chloride Melt
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Flow Stress and Microstructural Evolution of AM50 Alloy during Upsetting Forging Tests at High Temperature
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Phosphate Conversion Coating on Diecast AZ91D and Its Corrosion Resistance
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Characterization of Wear and Corrosion Protective Coatings Formed on AZ91 Magnesium Alloy and SiCw/AZ91 Magnesium Matrix Composite by Microarc Oxidation
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Compressive Behavior of Extruded SiCw/AZ91 at Temperatures close to and above the Solidus of the Matrix Alloy
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Phosphoric Conversion Coating and Chromic Conversion Coating for Die-Cast Magnesium Alloy ZM5
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A Study on the Pretreatment of Direct Electroless Nickel Plating on Magnesium Alloys AZ91D
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HomeMaterials Science ForumMaterials Science Forum Vols. 488-489Phosphate Conversion Coating on Diecast AZ91D and...

Phosphate Conversion Coating on Diecast AZ91D and Its Corrosion Resistance

Abstract:

A phosphate conversion coating was deposited on diecast AZ91D magnesium alloys, the film was a complex phosphate containing Mg and Al,which showed amorphous structure. Corrosion resistance of conversion coating in 3.5%NaCl was investigated by polarization curve. It was showed that the anodic branch of polarization curve for the phosphate conversion coating presented typical passivation characteristic. Immersion test results showed that the corrosion rate of phosphate conversion coating was less than that of chromate Dow7 film.

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Periodical:

Materials Science Forum (Volumes 488-489)

Pages:

819-822

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.488-489.819

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Online since:

July 2005

Authors:

Wan Qiu Zhou, Da Yong Shan, En-Hou Han, Wei Ke

Keywords:

Chemical Conversion Coating, Corrosion Resistance, Magnesium Alloy

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References

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DOI: 10.1002/9781118859803.ch93

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