Shandong Science ›› 2020, Vol. 33 ›› Issue (6): 64-71.doi: 10.3976/j.issn.1002-4026.2020.06.009

• New Materials • Previous Articles     Next Articles

Surface modification of ZTM630 magnesium alloy by micro-arc oxidation

WANG Shi-fang,LI HangLIU Hong-taoMA Bai-changZHOU Ji-xueLI Tao*   

  1. Shandong Key Laboratory of High Strength Lightweight Metallic Materials, Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China

  • Received:2020-04-21 Online:2020-12-09 Published:2020-12-10

Abstract: To further optimize the corrosion resistance of biomedical magnesium alloys and meet clinical use requirements, surface modification was performed on a novel biomedical ZTM630 magnesium alloy with high strength and toughness via micro-arc oxidation. Micro-arc oxidized samples with oxidation times of 2, 5, 8, and 15 min were prepared, and their microstructure and corrosion resistance were characterized and analyzed. Results show that coating thickness and surface roughness increased with the extension of oxidation time. However, the samples showed the highest corrosion resistance when oxidation time was 5 min. This study shows that the reasonable regulation of micro-arc oxidation time is of great significance in the improvement of corrosion resistance of the biomedical magnesium alloy.

Key words: magnesium alloy, micro-arc oxidation; biomedical, corrosion resistance, coating

CLC Number: 

  • TG146.2