Effect of Electrolyte Compositions on the Corrosion Behavior of Oxide Films on AZ91D Magnesium Alloy Prepared by Micro-Arc Oxidation

2019 ◽  
Vol 16 (43) ◽  
pp. 29-36
Author(s):  
Hyun Sam Ryu ◽  
Seong-Hyeon Hong
Keyword(s):  
Magnesium Alloy ◽  
Corrosion Behavior ◽  
Oxide Films ◽  
Az91d Magnesium Alloy ◽  
Micro Arc Oxidation

Corrosion behavior of micro-arc oxidation coating on AZ91D magnesium alloy in NaCl solutions with different concentrations

2012 ◽  
Vol 22 (7) ◽  
pp. 1786-1793 ◽  
Author(s):  
Hui-xia GUO ◽  
Ying MA ◽  
Jing-song WANG ◽  
Yu-shun WANG ◽  
Hai-rong DONG ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Corrosion Behavior ◽  
Az91d Magnesium Alloy ◽  
Micro Arc Oxidation

Local corrosion behavior and model of micro-arc oxidation HA coating on AZ31 magnesium alloy

2017 ◽  
Vol 331 ◽  
pp. 179-188 ◽  
Author(s):  
Huijuan Ma ◽  
Yanhong Gu ◽  
Shujing Liu ◽  
Juntie Che ◽  
Dawei Yang
Keyword(s):  
Magnesium Alloy ◽  
Corrosion Behavior ◽  
Local Corrosion ◽  
Az31 Magnesium Alloy ◽  
Ha Coating ◽  
Micro Arc Oxidation

Transformation between localized and general corrosion behavior of die‐cast AZ91D magnesium alloy in 3.5 wt% NaCl aqueous solutions

2019 ◽  
Vol 70 (12) ◽  
pp. 2303-2310 ◽  
Author(s):  
Shaohua Zhang ◽  
Lifeng Hou ◽  
Huayun Du ◽  
Huan Wei ◽  
Baosheng Liu ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Aqueous Solutions ◽  
Corrosion Behavior ◽  
General Corrosion ◽  
Az91d Magnesium Alloy ◽  
Die Cast

Microstructure and Properties of MAO Coatings for AZ91D Magnesium Alloy in Varies Work Mode

2013 ◽  
Vol 747-748 ◽  
pp. 178-183 ◽  
Author(s):  
Xue Jun Cui ◽  
Xiu Zhou Lin ◽  
Chun Hai Liu ◽  
Rui Song Yang ◽  
Ming Tian Li
Keyword(s):  
Magnesium Alloy ◽  
Orthogonal Experiment ◽  
Constant Current ◽  
Optimum Process ◽  
Az91d Magnesium Alloy ◽  
Experiment Method ◽  
Micro Arc Oxidation ◽  
Orthogonal Experiment Method ◽  
Power Mode

Micro arc oxidation coatings were prepared on AZ91D magnesium alloy in order to evaluate the role of electrical parameters under different work mode. Taking HV hardness and pit corrosion time as investigation index, the optimum process parameters were obtained through orthogonal experiment method. The morphology of coating was observed by scanning electron microscopy (SEM). The results showed that the coatings with dense and few micro pores can be obtained under constant current and power mode, and this kind coatings are of good corrosion resistance and have HV micro-hardness compared with those under constant voltage mode.

Impedance Behavior of the Composite Coatings Prepared on Magnesium Alloy AZ91 in Simulated Seawater Solution

2014 ◽  
Vol 900 ◽  
pp. 526-530
Author(s):  
Wei Shang ◽  
Zhou Lan Yin ◽  
Yu Qing Wen ◽  
Xu Feng Wang
Keyword(s):  
Magnesium Alloy ◽  
Corrosion Protection ◽  
Corrosion Behavior ◽  
Electrochemical Impedance ◽  
Composite Coatings ◽  
Sol Gel ◽  
Soaking Time ◽  
Magnesium Alloy Az91 ◽  
Micro Arc Oxidation ◽  
Simulated Seawater

The composite coatings were obtained on a magnesium alloy by micro-arc oxidation and sol-gel technique. Electrochemical impedance spectroscopy (EIS) was used to evaluate the corrosion behavior of MAO coating and composite coatings in a simulated seawater solution. The results show that corrosion behavior of the MAO coating and composite coatings are different at different immersion times. Corrosion protection of the MAO coating gradually weaken with the extension of soaking time, but corrosion protection of the composite coatings become stronger first and then weaken.

Corrosion Performance of Anodized AZ91D Magnesium Alloy: Effect of the Anodizing Potential on the Film Structure and Corrosion Behavior

2013 ◽  
Vol 23 (2) ◽  
pp. 593-603 ◽  
Author(s):  
Mara Cristina Lopes de Oliveira ◽  
Viviam Serra Marques Pereira ◽  
Olandir Vercino Correa ◽  
Renato Altobelli Antunes
Keyword(s):  
Magnesium Alloy ◽  
Corrosion Behavior ◽  
Film Structure ◽  
Corrosion Performance ◽  
Az91d Magnesium Alloy ◽  
Alloy Effect
Sign in / Sign up

Export Citation Format

Share Document