Precipitation control of calcium phosphate on pure magnesium by anodization |
| |
Authors: | Sachiko Hiromoto Tamao Shishido Norio Maruyama Toshiji Mukai |
| |
Affiliation: | a Metallic Biomaterials Group, Biomaterials Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan b Lightweight Alloys Group, Structural Metals Center, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba 305-0047, Japan |
| |
Abstract: | Calcium phosphate precipitated on pure magnesium from artificial plasma (modified Hanks’ solution) was varied by anodization and autoclaving, aiming the control of corrosion rate of bioabsorbable magnesium. Rough and smooth anodized film was formed depending on anodizing voltage in 1 N NaOH. The amount of calcium phosphate precipitated on the porous film was 2-3 times larger than that on the smooth film. The Ca/P ratio on the porous film was slightly higher than that on the smooth film. The autoclaving did not significantly influence the morphology of anodized film; however, the precipitation of calcium phosphate was restricted. No significant local corrosion occurred after the immersion in modified Hanks’ solution. It is demonstrated that the precipitation of calcium phosphate on magnesium can be controlled by anodization and autoclaving. |
| |
Keywords: | A Bioabsorbable magnesium B Calcium phosphate C Anodization D Autoclaving E Corrosion |
本文献已被 ScienceDirect 等数据库收录! |
|