Super-elastic titanium alloy for medical uses
AssigneeFurukawa Techno Material Co., Ltd.
InventorsToyonobu Tanaka, Hiroshi Horikawa, Shuichi Miyazaki, Hideki Hosoda
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Abstract
A super-elastic titanium alloy for medical use consisting essentially of: a molybdenum (Mo) as a β stabilizer element of titanium (Ti): from 2 to 12 at %; an α stabilizer element of the titanium (Ti): from 0.1 to 14 at %; and the balance being titanium (Ti) and inevitable impurities. The α stabilizer element is at least one element selected from the group consisting of aluminum (Al), gallium (Ga) and germanium (Ge).
Claims18
A super-elastic titanium alloy for medical use consisting essentially of:
- molybdenum (Mo) as a β stabilizer element of titanium (Ti)
- :
- from 2 to 12 at %;
- an α stabilizer element of the titanium (Ti)
- :
- from 0.1 to 14 at %;
- and
- the balance being titanium (Ti) and inevitable impurities.
A method for making a super-elastic titanium alloy for medical use comprising the steps of:
- preparing a titanium alloy ingot which consists essentially of:
- molybdenum (Mo) as a β stabilizer element of titanium (Ti)
- :
- from 2 to 12 at %;
- as an α stabilizer element of the titanium (Ti), at least one element selected from the group consisting of aluminum (Al), gallium (Ga) and germanium (Ge)
- :
- from 0.1 to 14 at %;
- and
- the balance being titanium (Ti) and inevitable impurities,
- subjecting the ingot to a homogenized heat treatment in a vacuum environment or an inert gas environment at a temperature ranging from 1,000 degree to 1,200 degree, and cooling the ingot quickly to a room temperature;
- after cooling the ingot to the room temperature, cold working the ingot to prepare a sheet;
- and
- subjecting the sheet to a solution heat treatment in the vacuum environment or the inert gas environment at a temperature ranging from 600 degree to 1,100 degree.
Dependencies are inferred from the claim text.