TY - JOUR
T1 - Mg-Zn-Ca amorphous alloys for application as temporary implant
T2 - Effect of Zn content on the mechanical and corrosion properties
AU - Matias, T. B.
AU - Roche, V.
AU - Nogueira, R. P.
AU - Asato, G. H.
AU - Kiminami, C. S.
AU - Bolfarini, C.
AU - Botta, W. J.
AU - Jorge, A. M.
N1 - Funding Information:
This work was funded by FAPESP under the grant number FAPESP Tematic # 2013/05987-8 . T.B.M acknowledges CNPq (# 200635/2014-0 (PDE)) -Science without Border Program and A.M.J. acknowledges FAPESP fellowship through grant number 2012/13179-6 .
Publisher Copyright:
© 2016 Elsevier Ltd
PY - 2016/11/15
Y1 - 2016/11/15
N2 - In this paper, two Mg-Zn-Ca amorphous alloys were processed and their mechanical and corrosion properties were evaluated and compared. The first alloy was a new composition, Zn-rich, Mg60Zn34Ca6, designed thanks to a multifold approach involving two different criteria, topological instability, and electronic criteria. The second alloy, with less Zn content, was a well-known Mg73Zn23Ca4, used for the sake of comparison. Three kinds of rapidly solidified samples were processed for each composition: ribbons, wedge, and cylindrical samples. The new composition showed much better glass-forming ability and superior corrosion and mechanical properties than the Zn-poorer composition. The effect of Fe content, a typical contaminant in Mg-based alloys, was also evaluated. Electrochemical results in amorphous and in crystalline samples showed that increasing iron to certain amounts has no influence on the corrosion resistance of the investigated alloys.
AB - In this paper, two Mg-Zn-Ca amorphous alloys were processed and their mechanical and corrosion properties were evaluated and compared. The first alloy was a new composition, Zn-rich, Mg60Zn34Ca6, designed thanks to a multifold approach involving two different criteria, topological instability, and electronic criteria. The second alloy, with less Zn content, was a well-known Mg73Zn23Ca4, used for the sake of comparison. Three kinds of rapidly solidified samples were processed for each composition: ribbons, wedge, and cylindrical samples. The new composition showed much better glass-forming ability and superior corrosion and mechanical properties than the Zn-poorer composition. The effect of Fe content, a typical contaminant in Mg-based alloys, was also evaluated. Electrochemical results in amorphous and in crystalline samples showed that increasing iron to certain amounts has no influence on the corrosion resistance of the investigated alloys.
KW - Biomaterial
KW - Contaminant effect
KW - Design of amorphous alloys
KW - Mechanical and corrosion properties
KW - Mg-Zn-Ca amorphous alloys
UR - http://www.scopus.com/inward/record.url?scp=84980340186&partnerID=8YFLogxK
U2 - 10.1016/j.matdes.2016.07.148
DO - 10.1016/j.matdes.2016.07.148
M3 - Article
AN - SCOPUS:84980340186
SN - 0264-1275
VL - 110
SP - 188
EP - 195
JO - Materials and Design
JF - Materials and Design
ER -