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Microstructures, mechanical and corrosion properties and biocompatibility of as extruded Mg-Mn-Zn-Nd alloys for biomedical applications

Zhou, Ying-Long, Li, Yucang, Luo, Dong-Mei, Ding, Yunfei and Hodgson, Peter 2015, Microstructures, mechanical and corrosion properties and biocompatibility of as extruded Mg-Mn-Zn-Nd alloys for biomedical applications, Materials science and engineering: C, vol. 49, pp. 93-100, doi: 10.1016/j.msec.2014.12.057.

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Title Microstructures, mechanical and corrosion properties and biocompatibility of as extruded Mg-Mn-Zn-Nd alloys for biomedical applications
Author(s) Zhou, Ying-Long
Li, Yucang
Luo, Dong-Mei
Ding, Yunfei
Hodgson, Peter
Journal name Materials science and engineering: C
Volume number 49
Start page 93
End page 100
Total pages 8
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2015-04
ISSN 1873-0191
Keyword(s) Corrosion behavior
Extrusion
Mechanical property
Mg–Mn–Zn–Nd alloy
Microstructure
Mg-Mn-Zn-Nd alloy
Science & Technology
Technology
Materials Science, Biomaterials
Materials Science
IN-VIVO CORROSION
MAGNESIUM ALLOYS
DEGRADATION PERFORMANCE
BIO-CORROSION
CA ALLOYS
BEHAVIOR
VITRO
BONE
BIOMATERIALS
Summary Extruded Mg-1Mn-2Zn-xNd alloys (x=0.5, 1.0, 1.5 mass %) have been developed for their potential use as biomaterials. The extrusion on the alloys was performed at temperature of 623K with an extrusion ratio of 14.7 under an average extrusion speed of 4mm/s. The microstructure, mechanical property, corrosion behavior and biocompatibility of the extruded Mg-Mn-Zn-Nd alloys have been investigated in this study. The microstructure was examined using X-ray diffraction analysis and optical microscopy. The mechanical properties were determined from uniaxial tensile and compressive tests. The corrosion behavior was investigated using electrochemical measurement. The biocompatibility was evaluated using osteoblast-like SaOS2 cells. The experimental results indicate that all extruded Mg-1Mn-2Zn-xNd alloys are composed of both α phase of Mg and a compound of Mg7Zn3 with very fine microstructures, and show good ductility and much higher mechanical strength than that of cast pure Mg and natural bone. The tensile strength and elongation of the extruded alloys increase with an increase in neodymium content. Their compressive strength does not change significantly with an increase in neodymium content. The extruded alloys show good biocompatibility and much higher corrosion resistance than that of cast pure Mg. The extruded Mg-1Mn-2Zn-1.0Nd alloy shows a great potential for biomedical applications due to the combination of enhanced mechanical properties, high corrosion resistance and good biocompatibility.
Language eng
DOI 10.1016/j.msec.2014.12.057
Field of Research 091207 Metals and Alloy Materials
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30069919

Document type: Journal Article
Collection: Institute for Frontier Materials
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