High temperature material interactions of thermoelectric systems using silicon germanium.The efficient use of silicon germanium thermoelectric material for radioisotope thermoelectric generators (RTG) is achieved by operation at relatively high temperatures. The insulation technique which is most appropriate for this application uses multiple layers of molybdenum foil and astroquartz. Even so, the long term operation of these materials at elevated temperatures can cause material interaction to occur within the system. To investigate these material interactions, the Jet Propulsion Laboratory is currently testing a number of thermoelectric modules which use four silicon germanium thermoelectric couples in conjunction with the multifoil thermal insulation. The paper discusses the results of the ongoing four-couple module test program and correlates test results with those of a basic material test program.
Document ID
19730053588
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Stapfer, G.
Truscello, V. C. (California Institute of Technology, Jet Propulsion Laboratory, Pasadena Calif., United States)
Date Acquired
August 7, 2013
Publication Date
January 1, 1973
Subject Category
Nuclear Engineering
Meeting Information
Meeting: Intersociety Energy Conversion Engineering Conference