The effects of 8-hydroxyquinoline on corrosion performance of a Mg-rich coating on AZ91D magnesium alloy |
| |
| Affiliation: | 1. Department of Materials Science and Engineering, Graduate School of Engineering and Science, Shibaura Institute of Technology, 3-7-5 Toyosu, Koto-ku, 135-8548 Tokyo, Japan;2. Department of Materials Science and Engineering, College of Engineering, Shibaura Institute of Technology, 3-7-5 Toyosu, Koto-ku, 135-8548 Tokyo, Japan;3. Department of Materials, Physics and Energy Engineering, Graduate School of Engineering, Nagoya University, Furocho, Chikusa-ku, 463-8603 Nagoya, Japan;4. Institute of Innovation for Future Society, Nagoya University, Furocho, Chikusa-ku, 463-8603 Nagoya, Japan;5. Green Mobility Collaborative Research Center, Nagoya University, Furocho, Chikusa-ku, 463-8603 Nagoya, Japan |
| |
| Abstract: | A Mg-HQ-rich primer was prepared by adding 45% pure magnesium particles and 5% 8-hydroxyquinoline in epoxy coating. The Mg-HQ-rich primer showed obviously better protection for AZ91D alloy than 50% Mg-rich primer. The additive 8-HQ combines with Mg2+ in the coating, forming a insoluble complex, MgQ2, instead of Mg(OH)2 on Mg particles. The MgQ2 layer may retard dissolution of magnesium particles and prolong the cathodic protection effect of Mg-HQ-rich primer. Additionally, the corrosion products may also block the defects in the primer and the active sites on the substrate surface, thereby further increase the corrosion resistance of the Mg-HQ-rich primer. |
| |
| Keywords: | A Magnesium A Alloy B EIS B IR spectroscopy C Polymer coatings C Cathodic protection |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
