The Abbott Ball Company

United States of America As Represented by the Administrator of Nasa

The United States of America

Carpenter Technology Corporation

Glenn N Glennon

Christopher DellaCorte

Eric Bono

Disclosed herein is a method comprising disposing on a base article a nickel-titanium alloy; where the nickel is in an amount of about 58 to about 62 weight percent and titanium in an amount of about 38 to about 42 wt %, based on the total weight of the nickel-titanium alloy; and applying a pressure of 12 to 20 kilopounds per square inch at a temperature of 1400 to 2100&#xb0; F. for a period of 1 to 8 hours to form a nickel-titanium alloy coating on the base article. Disclosed is an article comprising a base article; and a nickel-titanium alloy; where the nickel-titanium alloy is disposed on the base article; where the nickel is in an amount of about 58 to about 62 weight percent and titanium in an amount of about 38 to about 42 wt %, based on the total weight of the nickel-titanium alloy.

Method of hardening articles and articles comprising the same

Disclosing herein is a method for manufacturing nickel-titanium compositions. The method includes disposing a powdered composition in a mold; the powdered composition comprising nickel and titanium; the titanium being present in an amount of about 38 to about 42 wt % and the nickel being present in an amount of about 58 to about 62 wt %; sintering the powdered composition to produce a sintered preform; compacting the preform; machining the preform to form an article; heat treating the article; the annealing being conducted at a temperature of about 1650&#xb0; F. to about 1900&#xb0; F. at a pressure of about 3 Torr to about 5 Kg&#x2212;f/cmfor a time period of about 10 minutes to about 5 hours; and quenching the article.

Compositions comprising nickel-titanium, methods manufacture thereof and articles comprising the same

Disclosing herein is a method for manufacturing nickel-titanium compositions. The method includes disposing a powdered composition in a mold; the powdered composition comprising nickel and titanium; the titanium being present in an amount of about 38 to about 42 wt % and the nickel being present in an amount of about 58 to about 62 wt %; sintering the powdered composition to produce a sintered preform; compacting the preform; machining the preform to form an article; heat treating the article; the annealing being conducted at a temperature of about 1650&#xb0; F. to about 1900&#xb0; F. at a pressure of about 3 Torr to about 5 Kg-f/cmfor a time period of about 10 minutes to about 5 hours; and quenching the article.

Compositions comprising nickel-titanium, methods of manufacture thereof and articles comprising the same

Disclosed herein is a friction reducing nickel-titanium composition. The nickel-titanium composition includes a first phase that comprises nickel and titanium in an atomic ratio of about 0.45:0.55 to about 0.55:0.45; a second phase that comprises nickel and titanium in an atomic ratio of about 0.70:0.30 to about 0.80:0.20; and a third phase that comprises nickel and titanium in an atomic ratio of about 0.52:0.48 to about 0.62:0.38. A bearing for reducing friction comprising a nickel-titanium composition comprising a first phase that comprises nickel and titanium in an atomic ratio of about 0.45:0.55 to about 0.55:0.45; a second phase that comprises nickel and titanium in an atomic ratio of about 0.70:0.30 to about 0.80:0.20; and a third phase that comprises nickel and titanium in an atomic ratio of about 0.52:0.48 to about 0.62:0.38; where the bearing is free from voids and pinholes.

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Berlin, CT, United States of America

Glenn N Glennon