Surface effects on tritium diffusion in materials in a radiation environment
Conference
·
OSTI ID:4161215
Tritium transport and distribution in a material are controlled by chemical potential and thermal gradients and cross-coupling to impurities and defects. Surfaces influence tritium diffusion by acting as sources and sinks for defects and impurities, and surface films restricting tritium transfer between the solid and surrounding fluids. Radiation directly affects boundary processes such as dissociation or adsorption, may erode a surface film or the surface itself, and introduces defects and impurities into the solid by radiation damage, transmutation, or ion implantation, thereby modifying tritium transport within the solid and its transfer across external interfaces. There have been no definitive investigations of these effects, but their practical significance has been demonstrated in tritium release or absorption studies with stainless steel, Zircaloy, niobium, and other materials. (auth)
- Research Organization:
- Du Pont de Nemours (E.I.) and Co., Aiken, S.C. (USA). Savannah River Lab.
- NSA Number:
- NSA-33-001324
- OSTI ID:
- 4161215
- Report Number(s):
- DP-MS--75-55; CONF-750806--4
- Country of Publication:
- United States
- Language:
- English
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· J. Nucl. Mater., v. 48, no. 3, pp. 307-316
·
OSTI ID:4410459
Related Subjects
*NIOBIUM-- SURFACE PROPERTIES
*OXIDES-- SURFACE PROPERTIES
*STAINLESS STEELS-- SURFACE PROPERTIES
*TRITIUM-- DIFFUSION
*ZIRCALOY-- SURFACE PROPERTIES
360106* --Materials--Metals & Alloys--Radiation Effects
DEFECTS
HIGH TEMPERATURE
IMPURITIES
MEDIUM TEMPERATURE
N50230 --Metals
Ceramics
& Other Materials--Metals & Alloys--Properties
Structure & Phase Studies
N50240* --Metals
Ceramics
& Other Materials--Metals & Alloys--Radiation Effects
SORPTIVE PROPERTIES
TEMPERATURE DEPENDENCE
TEMPERATURE GRADIENTS
VERY HIGH TEMPERATURE
*OXIDES-- SURFACE PROPERTIES
*STAINLESS STEELS-- SURFACE PROPERTIES
*TRITIUM-- DIFFUSION
*ZIRCALOY-- SURFACE PROPERTIES
360106* --Materials--Metals & Alloys--Radiation Effects
DEFECTS
HIGH TEMPERATURE
IMPURITIES
MEDIUM TEMPERATURE
N50230 --Metals
Ceramics
& Other Materials--Metals & Alloys--Properties
Structure & Phase Studies
N50240* --Metals
Ceramics
& Other Materials--Metals & Alloys--Radiation Effects
SORPTIVE PROPERTIES
TEMPERATURE DEPENDENCE
TEMPERATURE GRADIENTS
VERY HIGH TEMPERATURE