Glassy metal alloy temperature sensing elements for resistance thermometers
AssigneeAllied Chemical Corporation
InventorRyusuke Hasegawa
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Abstract
Glassy metal alloys of compositions in the Be-Ti-Zr system suitable as temperature sensing elements for resistance thermometers are provided. The compositions consist essentially of about 20 to 45 atom percent beryllium, about 2 to 80 atom percent zirconium, 0 to about 2 atom percent of at least one metal of vanadium, chromium, manganese, iron, nickel and cobalt, and the balance essentially titanium and incidental impurities. The alloys of the invention combine a high temperature coefficient of resistance and negligible temperature-dependent magneto-resistance.
Claims18
A temperature sensing element, comprising for low temperature resistance thermometers
- a. a body of a metal alloy that is at least 50% glassy having a composition consisting essentially of about 20 to 45 atom percent beryllium, about 2 to 80 atom percent zirconium, about 0.5 to about 2 atom percent of at least one metal selected from the group consisting of vanadium, chromium, manganese, iron, nickel and cobalt, and the balance essentially titanium and incidental impurities;
- and
- b. electrically conductive leads attached thereto.
A metal alloy that is at least 50% glassy having a composition consisting essentially of about 20 to 45 atom percent beryllium, about 2 to 80 atom percent zirconium, about 0.5 to 2 atom percent of at least one metal selected from the group consisting of vanadium, chromium, manganese, iron, nickel and cobalt, and the balance essentially titanium and incidental impurities.
In a process for measuring low temperatures which comprises measuring a signal generated by a temperature sensing element of a resistance thermometer which is electrically connected to a temperature indication means, the improvement which comprises employing as the temperature sensing element a body of metal alloy that is at least 50% glassy having a composition consisting essentially of about 20 to 45 atom percent beryllium, about 2 to 80 atom percent zirconium, about 0.5 to about 2 atom percent of at least one metal selected from the group consisting of vanadium, chromium, manganese, iron, nickel and cobalt, and the balance essentially titanium and incidental impurities.
Dependencies are inferred from the claim text.