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Microstructure, mechanical and bio-corrosion properties of Mn-doped Mg–Zn–Ca bulk metallic glass composites.
- Source :
-
Materials Science & Engineering: C . Oct2013, Vol. 33 Issue 7, p3832-3838. 7p. - Publication Year :
- 2013
-
Abstract
- Abstract: The effects of Mn substitution for Mg on the microstructure, mechanical properties, and corrosion behavior of Mg69−xZn27Ca4Mnx (x=0, 0.5 and 1at.%) 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 545MPa to 364MPa. 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. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 09284931
- Volume :
- 33
- Issue :
- 7
- Database :
- Academic Search Index
- Journal :
- Materials Science & Engineering: C
- Publication Type :
- Academic Journal
- Accession number :
- 89493963
- Full Text :
- https://doi.org/10.1016/j.msec.2013.05.020