| YANG Xu,LI Lan-lan,HE Jian,ZHANG Ding-fei,PAN Fu-sheng.The Effect of Microstructure of Magnesium Alloys on Preparation of Phytic Acid Conversion Coatings[J],(4):27-30，62 |
| The Effect of Microstructure of Magnesium Alloys on Preparation of Phytic Acid Conversion Coatings |
| Received:April 25, 2012 Revised:August 20, 2012 |
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| DOI： |
| KeyWord:magnesium alloys microstructure phytic acid conversion coatings |
| Author | Institution |
| YANG Xu |
Chemistry Department, Third Military Medical University, Chongqing , China |
| LI Lan-lan |
Chemistry Department, Third Military Medical University, Chongqing , China |
| HE Jian |
Chemistry Department, Third Military Medical University, Chongqing , China |
| ZHANG Ding-fei |
College of Materials Science and Engineering, Chongqing University, Chongqing , China |
| PAN Fu-sheng |
College of Materials Science and Engineering, Chongqing University, Chongqing , China |
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| Abstract: |
| To study the influence of microstructure of magnesium alloys on preparation of phytic acid conversion coatings, the phytic acid coatings were prepared on AZ91D,AZ61,ZK60,ZM21 magnesium alloys in phytic acid aqueous solution by immersion method, and pure magnesium were used to compare. The surface morphologies of conversion coating were observed, and surface element compositions and concentration distribution of conversion coating were analyzed, and the effect of the microstructure on preparation of phytic acid conversion coating was studied. The results show that alloying elements play a definitive role in forming conversion coatings. Tetravalent and trivalent alloying elements are more helpful than divalent alloying elements. Alloying elements dissolved in the magnesium matrix(alpha-phase)are more beneficial for forming coatings than that in the second-p hase. |
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