In vitro degradation and biocompatibility of Mg-Nd-Zn-Zr alloy
نویسندگان
چکیده
منابع مشابه
In vivo degradation behavior and biocompatibility of Mg-Nd-Zn-Zr alloy at early stage.
The neotype magnesium alloy, Mg-Nd-Zn-Zr (NZK) alloy, was implanted into the rabbit femur to investigate its in vivo degradation behavior and biocompatibility. Seventy-two New Zealand white rabbits were randomly divided into the NZK alloy group, titanium alloy group and sham-operated group. Then NZK alloy rods were embedded in the rabbit femur in the NZK alloy group, titanium alloy rods were em...
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Fretting is a significant cause for the failure of orthopedic implants. Currently, since magnesium and its alloys have been developed as promising biodegradable implant materials, the fretting behavior of the Mg alloys is of great research significance. In this study, a Mg-Nd-Zn-Zr alloy (hereafter, denoted as JDBM alloy) was selected as experimental material, and its fretting behaviors were ev...
متن کاملEnhanced Age Strengthening of Mg-Nd-Zn-Zr Alloy via Pre-Stretching
Pre-stretching was carried out to modify the microstructure of Mg-Nd-Zn-Zr alloy to enhance its age strengthening. The results indicated that more heterogeneous nucleation sites can be provided by the high density of dislocations caused by the plastic pre-stretching deformation, as well as speeding up the growth rate of precipitates. Comparison of microstructure in non-pre-stretched specimens a...
متن کاملIn vitro degradation behavior and cytocompatibility of Mg–Zn–Zr alloys
Zinc and zirconium were selected as the alloying elements in biodegradable magnesium alloys, considering their strengthening effect and good biocompatibility. The degradation rate, hydrogen evolution, ion release, surface layer and in vitro cytotoxicity of two Mg-Zn-Zr alloys, i.e. ZK30 and ZK60, and a WE-type alloy (Mg-Y-RE-Zr) were investigated by means of long-term static immersion testing i...
متن کاملEnhanced bioactivity of Mg-Nd-Zn-Zr alloy achieved with nanoscale MgF2 surface for vascular stent application.
Magnesium (Mg) alloys have revolutionized the application of temporary load-bearing implants as they meet both engineering and medical requirements. However, rapid degradation of Mg alloys under physiological conditions remains the major obstacle hindering the wider use of Mg-based implants. Here we developed a simple method of preparing a nanoscale MgF2 film on Mg-Nd-Zn-Zr (denoted as JDBM) al...
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ژورنال
عنوان ژورنال: Chinese Science Bulletin
سال: 2012
ISSN: 1001-6538,1861-9541
DOI: 10.1007/s11434-012-5066-6