Biodegradable metal alloy with multiple properties
The present disclosure relates to a biodegradable metal alloy with multiple properties, containing: 0.05-0.15 wt % of calcium; a metal element X having a HCP structure, of a composition not forming a precipitated phase when mixed with magnesium; and magnesium as the remainder.
1. A biodegradable metal alloy, consisting of:
0.05-0.15 wt % of calcium;
a metal element X within an HCP structure, of a composition not forming a precipitated phase when mixed with magnesium; and
magnesium as the remainder,
wherein the X is Zn,
wherein the solid solubility of the X for magnesium is 5% or higher,
wherein the X is 1 wt % or greater and less than 2 wt %.
2. The biodegradable metal alloy of claim 1 , wherein the biodegradable metal alloy is extruded after casting.
3. The biodegradable metal alloy of claim 2 , wherein the biodegradable metal alloy has a corrosion rate of 0.005 mL/cm 2 /hr or lower in a phosphate-buffered saline (PBS) which simulates the in-vivo environment.
4. A biodegradable metal alloy, consisting of:
0.05-0.15 wt % of calcium;
1-2 wt % of a metal element X within an HCP structure, of a composition not forming a precipitated phase when mixed with magnesium; and
99.85-97.85 wt % of magnesium,
wherein the X is Zn,
wherein the solid solubility of the X for magnesium is 5% or higher.
5. The biodegradable metal alloy of claim 4 , wherein the biodegradable metal alloy is extruded after casting.
6. The biodegradable metal alloy of claim 4 , wherein the biodegradable metal alloy has a corrosion rate of 0.005 mL/cm2/hr or lower in a phosphate-buffered saline (PBS) which simulates the in-vivo environment.