Accession Number : AD0281842

Title :   VACUUM DEPOSITED INDIUM FILMS, PROPERTIES AND USE AS FUSIBLE ELEMENTS FOR THERMAL BATTERIES,

Corporate Author : HARRY DIAMOND LABS WASHINGTON D C

Personal Author(s) : Bullis ,L. H. ; Boesman,W. C.

Report Date : 02 JUL 1962

Pagination or Media Count : 42

Abstract : Need for a means of determining whether a thermal battery had been accidentally activated prior to its installation in a piece of equipment led to an investigation of thin metal films that melt at temperatures between 100 and 200 C, and have high resistances after and low resistances before melting. Indium films in thicknesses ranging from 200 to 5300 angstroms were vacuum-deposited onto mica substrates. Prior to melting at 156 C, these films were continuous and exhibited low resistance (less than 1 ohm). On melting, the films agglomerated into discrete particles, because indium will not wet mica, and high resistances (less than 1 ohm) were obtained. Thus, satisfactory elements were obtained on mica. (Author)

Descriptors :   *INDIUM, *METAL FILMS, *POWER SUPPLIES, *PRIMARY BATTERIES, *THIN FILM STORAGE DEVICES, MELTING, MICA, ELECTRICAL RESISTANCE, STORAGE, TEST METHODS, THERMAL BATTERIES, VAPOR PLATING

Distribution Statement : APPROVED FOR PUBLIC RELEASE