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Title: Thermo-electric modular structure and method of making same

Abstract

A method is presented for making a thermoelectric module wtth the aid of an insulating wafer having opposite metallized surfaces, a pair of similar equalizing sheets of metal, a hot-junction strap of metal, a thermoelectric element having hot- and cold-junction surfaces, and a radiator sheet of metal. The method comprises the following steps: brazing said equalizer sheets to said opposite metallized surfaces, respectively, of said insulating wafer with pure copper in a non-oxidizing ambient; brazing one surface of said hot-junction strap to one of the surfaces of said equalizing sheet with a nickel-gold alloy in a non- oxidizing ambient; and diffusion bonding said hot-junction surface of said thermoelectric element to the other surface of said hot-junction strap and said radiator sheet to said cold-junction surface of said thermoelectric element, said diffusion bonding being carried out in a non-oxidizing ambient, under compressive loading, at a temperature of about 550 deg C., and for about one-half hour. (Official Gazette)

Inventors:
; ; ;
Issue Date:
OSTI Identifier:
4338270
Patent Number(s):
3787958
Assignee:
to United States Atomic Energy Commission
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES
B - PERFORMING OPERATIONS B23 - MACHINE TOOLS B23K - SOLDERING OR UNSOLDERING
NSA Number:
NSA-29-024111
Resource Type:
Patent
Resource Relation:
Patent File Date: 1965 Aug 18; Other Information: B23k31/02. Orig. Receipt Date: 30-JUN-74
Country of Publication:
United States
Language:
English
Subject:
N42100* -Engineering-Energy Conversion; *THERMOELECTRIC GENERATORS- FABRICATION; NESDPS Office of Nuclear Energy Space and Defense Power Systems

Citation Formats

Freedman, N S, Horsting, C W, Lawrence, W F, and Carrona, J J. Thermo-electric modular structure and method of making same. United States: N. p., 1974. Web.
Freedman, N S, Horsting, C W, Lawrence, W F, & Carrona, J J. Thermo-electric modular structure and method of making same. United States.
Freedman, N S, Horsting, C W, Lawrence, W F, and Carrona, J J. Tue . "Thermo-electric modular structure and method of making same". United States.
@article{osti_4338270,
title = {Thermo-electric modular structure and method of making same},
author = {Freedman, N S and Horsting, C W and Lawrence, W F and Carrona, J J},
abstractNote = {A method is presented for making a thermoelectric module wtth the aid of an insulating wafer having opposite metallized surfaces, a pair of similar equalizing sheets of metal, a hot-junction strap of metal, a thermoelectric element having hot- and cold-junction surfaces, and a radiator sheet of metal. The method comprises the following steps: brazing said equalizer sheets to said opposite metallized surfaces, respectively, of said insulating wafer with pure copper in a non-oxidizing ambient; brazing one surface of said hot-junction strap to one of the surfaces of said equalizing sheet with a nickel-gold alloy in a non- oxidizing ambient; and diffusion bonding said hot-junction surface of said thermoelectric element to the other surface of said hot-junction strap and said radiator sheet to said cold-junction surface of said thermoelectric element, said diffusion bonding being carried out in a non-oxidizing ambient, under compressive loading, at a temperature of about 550 deg C., and for about one-half hour. (Official Gazette)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1974},
month = {1}
}