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Title: Titanium tritide radioisotope heat source development : palladium-coated titanium hydriding kinetics and tritium loading tests.

Abstract

We have found that a 180 nm palladium coating enables titanium to be loaded with hydrogen isotopes without the typical 400-500 C vacuum activation step. The hydriding kinetics of Pd coated Ti can be described by the Mintz-Bloch adherent film model, where the rate of hydrogen absorption is controlled by diffusion through an adherent metal-hydride layer. Hydriding rate constants of Pd coated and vacuum activated Ti were found to be very similar. In addition, deuterium/tritium loading experiments were done on stacks of Pd coated Ti foil in a representative-size radioisotope heat source vessel. The experiments demonstrated that such a vessel could be loaded completely, at temperatures below 300 C, in less than 10 hours, using existing department-of-energy tritium handling infrastructure.

Authors:
; ;  [1]
+ Show Author Affiliations
  1. (Savannah River National Labs, Aiken, SC)
Publication Date:
Research Org.:
Sandia National Laboratories
Sponsoring Org.:
USDOE
OSTI Identifier:
1035341
Report Number(s):
SAND2012-0232
TRN: US1201135
DOE Contract Number:
AC04-94AL85000
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
07 ISOTOPES AND RADIATION SOURCES; 08 HYDROGEN; ABSORPTION; COATINGS; DIFFUSION; HYDROGEN; HYDROGEN ISOTOPES; KINETICS; PALLADIUM; RADIOISOTOPE HEAT SOURCES; TITANIUM; TRITIDES; TRITIUM; NESDPS Office of Nuclear Energy Space and Defense Power Systems

Citation Formats

Van Blarigan, Peter, Shugard, Andrew D., and Walters, R. Tom. Titanium tritide radioisotope heat source development : palladium-coated titanium hydriding kinetics and tritium loading tests.. United States: N. p., 2012. Web. doi:10.2172/1035341.
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Van Blarigan, Peter, Shugard, Andrew D., & Walters, R. Tom. Titanium tritide radioisotope heat source development : palladium-coated titanium hydriding kinetics and tritium loading tests.. United States. doi:10.2172/1035341.
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Van Blarigan, Peter, Shugard, Andrew D., and Walters, R. Tom. Sun . "Titanium tritide radioisotope heat source development : palladium-coated titanium hydriding kinetics and tritium loading tests.". United States. doi:10.2172/1035341. https://www.osti.gov/servlets/purl/1035341.
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@article{osti_1035341,
title = {Titanium tritide radioisotope heat source development : palladium-coated titanium hydriding kinetics and tritium loading tests.},
author = {Van Blarigan, Peter and Shugard, Andrew D. and Walters, R. Tom},
abstractNote = {We have found that a 180 nm palladium coating enables titanium to be loaded with hydrogen isotopes without the typical 400-500 C vacuum activation step. The hydriding kinetics of Pd coated Ti can be described by the Mintz-Bloch adherent film model, where the rate of hydrogen absorption is controlled by diffusion through an adherent metal-hydride layer. Hydriding rate constants of Pd coated and vacuum activated Ti were found to be very similar. In addition, deuterium/tritium loading experiments were done on stacks of Pd coated Ti foil in a representative-size radioisotope heat source vessel. The experiments demonstrated that such a vessel could be loaded completely, at temperatures below 300 C, in less than 10 hours, using existing department-of-energy tritium handling infrastructure.},
doi = {10.2172/1035341},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2012},
month = {Sun Jan 01 00:00:00 EST 2012}
}
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DOI:  10.2172/1035341
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