Bimetallic strip for low temperature use

Patent · Tue Sep 22 04:00:00 EDT 1981

OSTI ID:5593178

Bussiere, J F; Suenaga, M; Welch, D O

There is provided a class of mechanically pre-stressed structures, suitably bi-layer strips comprising a layer of group 5 transition metals in intimate contact with a layer of a intermetallic compound of said transition metals with certain group 3a, 4a or 5a metals or metalloids suitably gallium, indium, silicon, germanium, tin, arsenic or antimony. The changes of young's modulus of these bi-layered combinations at temperatures in the region of but somewhat above absolute zero provides a useful means of sensing temperature changes. Such bi-metallic strips may be used as control strips in thermostats, in direct dial reading instruments, or the like. The structures are made by preparing a sandwich of a group 5b transition metal strip between the substantially thicker strips of an alloy between copper and a predetermined group 3a, 4a or 5a metal or metalloid, holding the three layers of the sandwich in intimate contact heating the same , cooling the same and removing the copper alloy and then removing one of the two thus formed interlayer alloys between said transition metal and the metal previously alloyed with copper.

• Assignee: to Department of Energy
• Patent Number(s): US 4291105
• OSTI ID: 5593178
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
360104 -- Metals & Alloys-- Physical Properties
BIMETALS
COPPER
ELEMENTS
GALLIUM
INDIUM
LAYERS
LOW TEMPERATURE
MECHANICAL PROPERTIES
MECHANICAL STRUCTURES
METALS
NIOBIUM
NIOBIUM COMPOUNDS
REFRACTORY METALS
SUPERCONDUCTORS
TEMPERATURE EFFECTS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
VANADIUM
VANADIUM COMPOUNDS
YOUNG MODULUS