Tritium diffusion in nonmetallic solids of interest to fusion reactors. Annual progress report, August 1, 1976--August 1, 1977
Technical Report
·
OSTI ID:7285981
Deuterium solubility measurements in alumina powders, ..beta..-silicon carbide and laminar pyrolytic carbon have been carried out by exposing samples to known partial pressures of deuterium gas at constant sample temperature and subsequently analyzing the release of deuterium from the samples using a residual gas analyzer. Permeation coefficients for hydrogen as a function of temperature and pressure have been measured in sintered alumina tubes using tritium as a tracer for hydrogen. The measurement techniques appear to give consistent results that agree with other independent measurements. Solubility measurements show an approximate square-root dependence on pressure in all materials investigated to date. The permeabilities in silicon carbide and pyrolytic carbon as deduced from solubility and diffusivity data and in sintered alumina as measured directly appear to be several orders of magnitude below the corresponding data for high temperature metals proposed for use in fusion reactors.
- Research Organization:
- North Carolina State Univ., Raleigh (USA). Dept. of Nuclear Engineering
- OSTI ID:
- 7285981
- Report Number(s):
- ORO-4721-6
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
360603 -- Materials-- Properties
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700209 -- Fusion Power Plant Technology-- Component Development & Materials Testing
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CARBIDES
CARBON
CARBON COMPOUNDS
CERAMICS
CHALCOGENIDES
DEUTERIUM
DIFFUSION
ELEMENTS
HYDROGEN ISOTOPES
ISOTOPES
LIGHT NUCLEI
NONMETALS
NUCLEI
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
OXIDES
OXYGEN COMPOUNDS
PERMEABILITY
PRESSURE DEPENDENCE
PYROLYTIC CARBON
RADIOISOTOPES
SILICON CARBIDES
SILICON COMPOUNDS
SOLUBILITY
STABLE ISOTOPES
TEMPERATURE DEPENDENCE
THERMONUCLEAR REACTOR WALLS
TRITIUM
YEARS LIVING RADIOISOTOPES
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
360603 -- Materials-- Properties
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700209 -- Fusion Power Plant Technology-- Component Development & Materials Testing
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CARBIDES
CARBON
CARBON COMPOUNDS
CERAMICS
CHALCOGENIDES
DEUTERIUM
DIFFUSION
ELEMENTS
HYDROGEN ISOTOPES
ISOTOPES
LIGHT NUCLEI
NONMETALS
NUCLEI
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
OXIDES
OXYGEN COMPOUNDS
PERMEABILITY
PRESSURE DEPENDENCE
PYROLYTIC CARBON
RADIOISOTOPES
SILICON CARBIDES
SILICON COMPOUNDS
SOLUBILITY
STABLE ISOTOPES
TEMPERATURE DEPENDENCE
THERMONUCLEAR REACTOR WALLS
TRITIUM
YEARS LIVING RADIOISOTOPES