Growth characterization of anodic film on AZ91D magnesium alloy in an electrolyte of Na2SiO3 and KF

2006 ◽  
Vol 13 (5) ◽  
pp. 450-455 ◽  
Author(s):  
Weiping Li ◽  
Liqun Zhu ◽  
Yihong Li ◽  
Bo Zhao
Keyword(s):  
Magnesium Alloy ◽  
Anodic Film ◽  
Az91d Magnesium Alloy ◽  
Growth Characterization

Preparation and characterization of colored Ti/Zr conversion coating on AZ91D magnesium alloy

2015 ◽  
Vol 276 ◽  
pp. 239-247 ◽  
Author(s):  
Aihua Yi ◽  
Jun Du ◽  
Jian Wang ◽  
Songling Mu ◽  
Guoge Zhang ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Conversion Coating ◽  
Az91d Magnesium Alloy

Preparation and characterization of inorganic and organic coatings on AZ91D magnesium alloy with electroless plating pretreatment

2011 ◽  
Vol 62 (9) ◽  
pp. 841-847 ◽  
Author(s):  
S. Y. Zhang ◽  
Q. Li ◽  
X. K. Yang ◽  
H. X. Zhang ◽  
S. Y. Wang ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Electroless Plating ◽  
Organic Coatings ◽  
Az91d Magnesium Alloy ◽  
Inorganic And Organic

Improvement of Corrosion Resistance of Rare Earth Element (REE)-Based Anodic Oxidation Coating on AZ91D Magnesium Alloy

2012 ◽  
Vol 187 ◽  
pp. 210-214 ◽  
Author(s):  
M.Z.M. Zain ◽  
S. Illias ◽  
M. Mat Salleh ◽  
K. Azwan Ismail ◽  
Z. Nooraizedfiza
Keyword(s):  
Corrosion Resistance ◽  
Rare Earth ◽  
Magnesium Alloy ◽  
Anodic Oxidation ◽  
Earth Metal ◽  
Immersion Test ◽  
Corrosion Property ◽  
Anodic Film ◽  
Anodic Films ◽  
Az91d Magnesium Alloy

Anodization is a useful technique for forming protective films on magnesium alloys and improves its corrosion resistance. Based on the rare earth metal (REE) salt solution, the optimum parameter was selected by comparing the anti-corrosion property of anodic film. The structure, component and surface morphology of anodic film and cross-section were analyzed using X-ray diffraction (XRD) and scanning electron microscopy (SEM) coupled with Energy Dispersive Spectroscopy (EDS). The corrosion behavior was evaluated by immersion test. In this paper, a dense anodic film approximately 20 µm thick was prepared on a AZ91D magnesium alloy through anodic oxidation coating. The results show that the anodic films were mainly composed of Mg17Al12, Mg17La2, MgO and amorphous compounds. The best corrosion resistance was obtained with specimen anodized in solution containing both lanthanum nitrate and magnesium, whose corrosion resistance is approximately 3 times higher than that of as-received AZ91D magnesium alloy.

Characterization of Oxide Film by Vanadium Based Anodic Oxidation Coating

2014 ◽  
Vol 970 ◽  
pp. 55-59
Author(s):  
Toha Nor Fadzilah ◽  
Siti Norbahiyah ◽  
Mohd Zain Mohamad Zamzuri
Keyword(s):  
Magnesium Alloy ◽  
Oxide Film ◽  
Cross Section ◽  
Corrosion Test ◽  
Energy Dispersive Spectrometry ◽  
Optical Microscope ◽  
Az91d Magnesium Alloy ◽  
Atomic Force ◽  
Polarization Technique

An oxide film was prepared on AZ91D magnesium alloy by anodizing in solution containing sodium metavanadate (NaVO3). The corrosion resistance of the AZ91D magnesium alloy was investigated at fixed current density 10 mA/cm2for 5 min with different concentration of solution in the range of 0 1.0 g/l. The surface morphology, cross section morphology, phase structure, and surface roughness of oxide film were studied by optical microscope, scanning electron microscope (SEM) and energy dispersive spectrometry (EDS), atomic force microscope (AFM) and potentiodynamic polarization technique and corrosion test, respectively.

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