Bimetallic strip for low temperature use. [4-300/sup 0/K]

Patent ·

OSTI ID:5345732

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

A class of mechanically pre-stressed structures is provided suitably bi-layer strips, consisting of a layer of group 5 transition metals in intimate contact with a layer of an intermetallic compound of transition metals with certain group 3A, 4A or 5A metals or metalloids such as Ga, In, Si, Ge, Sn, As or Sb. The changes of Young's modulus of these bi-layered combinations at temperatures in the region of somewhat above absolute zero provides a useful means of sensing temperature changes. Such bi-metallic strips may be used as control strips in thermostats, or in direct dial reading instruments. 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 are heated, cooled the copper alloys and is removed. Removing one of the two formed interlayer alloys between the transition metal and the metal previously alloyed with copper remain.

• DOE Contract Number: EY-76-C-02-0016
• Assignee: TIC; ERA-05-026267; EDB-80-079131
• OSTI ID: 5345732
• Country of Publication: United States
• Language: English

Related Subjects

47 OTHER INSTRUMENTATION
36 MATERIALS SCIENCE
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
SUPERCONDUCTING DEVICES
DESIGN
THERMOMETERS
YOUNG MODULUS
TEMPERATURE EFFECTS
ALUMINIUM
ANTIMONY
ARSENIC
COPPER
GERMANIUM
INDIUM
LAYERS
SILICON
STEELS
TEMPERATURE MEASUREMENT
THERMOSTATS
TIN
ALLOYS
CONTROL EQUIPMENT
ELEMENTS
EQUIPMENT
IRON ALLOYS
IRON BASE ALLOYS
MEASURING INSTRUMENTS
MECHANICAL PROPERTIES
METALS
SEMIMETALS
TRANSITION ELEMENTS
440300* - Miscellaneous Instruments- (-1989)
360101 - Metals & Alloys- Preparation & Fabrication
420201 - Engineering- Cryogenic Equipment & Devices