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Title: Capabilities for Power Sources In Extreme Environments and Applications.


Abstract not provided.

Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
Report Number(s):
DOE Contract Number:
Resource Type:
Resource Relation:
Conference: Proposed for presentation at the Center for Extreme Batteries Workshop held May 4-5, 2015 in College Park, Maryland, United States.
Country of Publication:
United States

Citation Formats

Wunsch, Thomas F., and Orendorff, Christopher. Capabilities for Power Sources In Extreme Environments and Applications.. United States: N. p., 2015. Web.
Wunsch, Thomas F., & Orendorff, Christopher. Capabilities for Power Sources In Extreme Environments and Applications.. United States.
Wunsch, Thomas F., and Orendorff, Christopher. 2015. "Capabilities for Power Sources In Extreme Environments and Applications.". United States. doi:.
title = {Capabilities for Power Sources In Extreme Environments and Applications.},
author = {Wunsch, Thomas F. and Orendorff, Christopher},
abstractNote = {Abstract not provided.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2015,
month = 4

Other availability
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  • Abstract not provided.
  • Refractory metal alloys possess the required combination of long-term high temperature strength properties required for fuel cladding and/or structural applications for Space Nuclear Power Systems. A quantitative evaluation of the mechanical properties of several refractory alloys relevant to a system design lifetime of seven years at temperatures between 800 and 1275 C is being conducted. Currently being evaluated are selected tantalum-, molybdenum-, niobium-, and tungsten-base alloys. Of principal interest at this time are creep and fatigue properties as a function of applied stress, test temperature, test environment, and thermochemical history. Creep properties of the above alloys have been calculated. Thismore » evaluation provides an assessment of the existing data and the data requirements necessary to assure success of the Space Nuclear Power Systems Program.« less
  • To achieve sufficient thermodynamic efficiency, space nuclear power systems must operate above 1000/sup 0/C. A quantitative evaluation of the existing mechanical properties data for the refractory alloys relevant to space nuclear power systems design lifetimes up to seven years at temperatures up to 1400/sup 0/C is being conducted. The most important properties for space nuclear power systems are long-term high-temperature (>1000/sup 0/C) creep strength and ductility, low-temperature (<400/sup 0/C) fracture toughness (including ductile-to-brittle transition temperature, (DBTT)), and ductility at high strain rates; of special concern are the above properties for weldments of refractory alloys, composition, applied stress, test temperature, testmore » environment (e.g., vacuum, lithium), and thermomechanical treatment (TMT) history. Currently being evaluated are, in order of ascending mp, selected alloys of niobium (e.g., Nb-1% Zr, Nb-1% Zr-0.1% C), molybdenum (e.g., Mo-13% Re), tantalum (e.g., ASTAR-811C), and tungsten (e.g., CVD W and W-25% Re). Creep properties of these alloys have been correlated via Larson-Miller, Manson-Hafered, and other empirical parameters; creep equations have been developed from these correlations. 12 figs., 8 tabs.« less
  • The volume contains 11 papers presented at the meeting. The papers are grouped under general topics that include polymides--materials for high temperature environments; atmospheric and extraatmospheric environments; and moisture environments. Specific subjects covered include thermomechanical characterization of graphite/polymide composites, elastic properties and fracture behavior of graphite/polyimide composites at extreme temperatures, space environmental effects on graphite/epoxy composites, environmental exposure of carbon/epoxy composite material systems, thermal isolator structures or cryogenic dewars, and others. Two of the papers are separately abstracted.