Self-healing hybrid coating of phytic acid/silane for improving the corrosion resistance of magnesium alloy

2018 ◽  
Vol 15 (3) ◽  
pp. 571-581 ◽  
Author(s):  
Yan Li ◽  
Shu Cai ◽  
Sibo Shen ◽  
Guohua Xu ◽  
Feiyang Zhang ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloy ◽  
Phytic Acid ◽  
Hybrid Coating ◽  
Self Healing

Influencing Factors of Phytic Acid Conversion Coating on AZ91 Magnesium Alloy

2011 ◽  
Vol 239-242 ◽  
pp. 2336-2341
Author(s):  
Yan Ling Lu ◽  
Yan Kun Chen ◽  
Shi Guo Du ◽  
Yi Guo ◽  
Qing Hong
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloy ◽  
Phytic Acid ◽  
Acid Concentration ◽  
Ph Value ◽  
Conversion Coating ◽  
Metal Corrosion ◽  
Anode Current Density ◽  
Az91 Magnesium Alloy ◽  
Az91 Magnesium

AZ91 magnesium alloy is selected as the matrix metal. SEM, EDS, Tafel and EIS were adopted and spot test was carried out to investigate the influence of pH value, phytic acid concentration, temperature,conversion time on corrosion resistance of conversion coatings. Result shows that process of phytic acid forming is the controlled metal corrosion process and the uneven surface pattern reflects the different chemical properties of two-phase current on magnesium alloy surface, which is implied by the conversion surface. It is proved by the test that pH value is committed the most to the corrosion resistance of the conversion coating, and the next is the phytic acid concentration. It is found that the corrosion resistance of the conversion coating is the best when pH value of the conversion solution is 4.5; The conversion coating has little influence on the cathode reaction dynamics, however, more importantly, it changes the dynamics of the alloy electrode anode solution reaction, therefore, the alloy’s anode current density decreases while the corrosion resistance of magnesium alloy is enhanced.

Corrosion resistance of Mg−Al LDH/Mg(OH)2/silane−Ce hybrid coating on magnesium alloy AZ31

2020 ◽  
Vol 30 (11) ◽  
pp. 2967-2979
Author(s):  
Zai-meng QIU ◽  
Rong-chang ZENG ◽  
Fen ZHANG ◽  
Liang SONG ◽  
Shuo-qi LI
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloy ◽  
Hybrid Coating ◽  
Alloy Az31 ◽  
Magnesium Alloy Az31

Microstructure and corrosion resistance of phytic acid conversion coatings for magnesium alloy

2008 ◽  
Vol 255 (5) ◽  
pp. 2098-2103 ◽  
Author(s):  
Xiufang Cui ◽  
Qingfen Li ◽  
Ying Li ◽  
Fuhui Wang ◽  
Guo Jin ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloy ◽  
Phytic Acid ◽  
Conversion Coatings

Corrosion resistance of a self-healing micro-arc oxidation/polymethyltrimethoxysilane composite coating on magnesium alloy AZ31

2017 ◽  
Vol 118 ◽  
pp. 84-95 ◽  
Author(s):  
Lan-Yue Cui ◽  
Shang-Dong Gao ◽  
Ping-Ping Li ◽  
Rong-Chang Zeng ◽  
Fen Zhang ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloy ◽  
Composite Coating ◽  
Self Healing ◽  
Alloy Az31 ◽  
Magnesium Alloy Az31 ◽  
Micro Arc Oxidation
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