Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10614557 | Materials Science and Engineering: C | 2013 | 7 Pages |
Abstract
The effects of Mn substitution for Mg on the microstructure, mechanical properties, and corrosion behavior of Mg69 â xZn27Ca4Mnx (x = 0, 0.5 and 1 at.%) alloys were investigated using X-ray diffraction, compressive tests, electrochemical treatments, and immersion tests, respectively. Microstructural observations showed that the Mg69Zn27Ca4 alloy was mainly amorphous. The addition of Mn decreases the glass-forming ability, which results in a decreased strength from 545 MPa to 364 MPa. However, this strength is still suitable for implant application. Polarization and immersion tests in the simulated body fluid at 37 °C revealed that the Mn-doped Mg-Zn-Ca alloys have significantly higher corrosion resistance than traditional ZK60 and pure Mg alloys. Cytotoxicity test showed that cell viabilities of osteoblasts cultured with Mn-doped Mg-Zn-Ca alloys extracts were higher than that of pure Mg. Mg68.5Zn27Ca4Mn0.5 exhibits the highest bio-corrosion resistance, biocompatibility and has desirable mechanical properties, which could suggest to be used as biomedical materials in the future.
Related Topics
Physical Sciences and Engineering
Materials Science
Biomaterials
Authors
Jingfeng Wang, Song Huang, Yang Li, Yiyun Wei, Xingfeng Xi, Kaiyong Cai,