Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

A solid state approach to the production of kilogram quantities of Si[sub 80]Ge[sub 20] thermoelectric alloys

Conference ·
OSTI ID:6843849
; ;
An important consideration in the development of improved materials for thermal-to-electrical power generation is whether a research-scale process or methodology is amenable to production of kilogram quantities. Research efforts on the solid state technique of mechanical alloying have shown that both n- and p-type Si-20 at. % Ge alloys can be produced which have improved thermoelectric properties compared to state-of-the-art MOD-RTG materials. Studies on the production of large quantities of mechanically alloyed powder alloys using a planetary mill indicate that properties similar to those observed in alloys prepared in smaller quantities by a vibratory mill can be obtained. The characterization of several p-type alloys doped with 0.8 at. % B in the form SiB[sub 4] by X-ray diffraction, scanning laser mass spectroscopy, Hall effect, and high temperature electrical resistivity and Seebeck coefficient measurements are described. The transport properties of these alloys are shown to be comparable to those measured on similar samples prepared in small quantities by a research-grade vibratory mill.
Research Organization:
Ames Lab., IA (United States)
Sponsoring Organization:
DOE; USDOE, Washington, DC (United States)
DOE Contract Number:
W-7405-ENG-82
OSTI ID:
6843849
Report Number(s):
IS-M-734; CONF-930103--28; ON: DE93004476
Country of Publication:
United States
Language:
English

Similar Records

A solid state approach to the production of kilogram quantities of Si{sub 80}Ge{sub 20} thermoelectric alloys
Conference · Mon Nov 30 23:00:00 EST 1992 · OSTI ID:10114977
A solid state approach to the production of kilogram quantities of Si[sub 80]Ge[sub 20] thermoelectric alloys
Conference · Thu Jan 14 23:00:00 EST 1993 · AIP Conference Proceedings (American Institute of Physics); (United States) · OSTI ID:6532400
A solid state approach to the production of kilogram quantities of Si- 20 at.% Ge thermoelectric alloys
Conference · Sat Aug 01 00:00:00 EDT 1992 · OSTI ID:10167524

Related Subjects

30 DIRECT ENERGY CONVERSION
300303* -- Thermoelectric Generators-- Materials
Components
& Auxiliaries
36 MATERIALS SCIENCE
360101 -- Metals & Alloys-- Preparation & Fabrication
360104 -- Metals & Alloys-- Physical Properties
ALLOYS
BORIDES
BORON ADDITIONS
BORON ALLOYS
BORON COMPOUNDS
COHERENT SCATTERING
DIFFRACTION
DOPED MATERIALS
ELECTRICAL PROPERTIES
GERMANIUM ALLOYS
HALIDES
HALL EFFECT
HALOGEN COMPOUNDS
MATERIALS
NESDPS Office of Nuclear Energy Space and Defense Power Systems
P-TYPE CONDUCTORS
PHYSICAL PROPERTIES
PRODUCTION
SCATTERING
SEMICONDUCTOR MATERIALS
SILICON ALLOYS
SILICON BORIDES
SILICON COMPOUNDS
SILICON HALIDES
THERMOELECTRIC MATERIALS
THERMOELECTRIC PROPERTIES
X-RAY DIFFRACTION