Super elastic zirconium alloy for biological use, medical instrument and glasses
AssigneeUniversity of Tsukuba
InventorsShuichi Miyazaki, Heeyoung Kim, Yosuke Sato
Life of this patent
Estimating the term…
Abstract
Provided is a super elastic alloy for biological use having a high biocompatibility, good processability and super elasticity, said super elastic alloy being a super elastic zirconium alloy for biological use comprising 27-54 mol % inclusive of titanium, 5-9 mol % inclusive of niobium which is a β phase-stabilizing element capable of stabilizing the β phase of zirconium, and 1-4 mol % inclusive in total of tin and/or aluminum which are ω phase-suppressing elements capable of suppressing the ω phase of zirconium, with the balance consisting of zirconium and inevitable impurities.
Claims3
A super-elastic zirconium alloy for living tissues, comprises:
- titanium within a range of 27 mol %˜54 mol %;
- niobium within a range of 5 mol %-9 mol %, serving as a β phase stabilizing element for stabilizing the β phase of zirconium;
- at least one of tin and aluminum within a range of 1 mol %˜4mol %, serving as a ω phase inhibiting element for inhibiting the ω phase of zirconium;
- zirconium, which accounts for the remaining portion;
- inevitable impurities.
Dependencies are inferred from the claim text.