HIGH HARDNESS SUPERELASTIC SHAPE MEMORY ALLOY NiTiCe
AssigneeIowa State University Research Foundation, Inc.
InventorsJun Cui, Gaoyuan Ouyang
Life of this patent
Estimating the term…
Abstract
Embodiments of the disclosure relate to a superelastic alloy comprising nickel, titanium, and at least one of cerium or lanthanum, in particular up to 1 wt % of the at least one of cerium or lanthanum. The alloy has a hardness of at least 60 HRC. Embodiments of the disclosure also relate to a method of preparing a superelastic alloy in which nickel and titanium are alloyed with at least one of cerium or lanthanum. The disclosed superelastic alloy and method of forming same are particularly suitable for forming ball bearings or a race for a ball bearing.
Claims20
A superelastic alloy comprising nickel, titanium, and at least one of cerium or lanthanum, wherein the alloy comprises a hardness of at least 60 HRC.
A method of preparing a superelastic alloy, comprising:
- alloying nickel and titanium with at least one of cerium or lanthanum;
- wherein the superelastic alloy comprises a hardness of at least 60 HRC.
A method of preparing a ball bearing or a race for a ball bearing, comprising:
- atomizing a melt of a superelastic alloy to form a powder;
- sintering the powder to form the ball bearing or the race;
- wherein the superelastic alloy comprises nickel, titanium, and at least one of cerium or lanthanum;
- wherein the superelastic alloy comprises a hardness of at least 60 HRC.
Dependencies are inferred from the claim text.