Effective diffusion coefficients of point defects in impure materials

Technical Report · Sat Mar 01 04:00:00 EST 1980

DOI:https://doi.org/10.2172/5489974· OSTI ID:5489974

Mansur, L. K.

Effective diffusion coefficients of vacancies and interstitials in a material containing impurities are derived in terms of impurity and point defect concentrations and reaction parameters. Irradiation and thermal conditions are considered. Several expressions presented earlier are reviewed. These are found to be limiting or approximate forms to a more general result. The regimes of importance of the point defect processes of thermal dissociation, trapping, recombination with bound point defects of the opposite type, and impurity-associated transport to sinks are evaluated in terms of the structure of the effective diffusion coefficients.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5489974
• Report Number(s): ORNL/TM-7247
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
360106 -- Metals & Alloys-- Radiation Effects
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DIFFUSION
DISSOCIATION
EQUATIONS
IMPURITIES
INTERSTITIALS
MATERIALS
MATHEMATICS
NUMERICAL ANALYSIS
PHYSICAL RADIATION EFFECTS
POINT DEFECTS
RADIATION EFFECTS
TRAPS
VACANCIES