Diffusion of 57Co Along Grain Boundaries in NiO,
Abstract
The characteristic parameter alpha D' gamma, which is the product of the segregation coefficient, the boundary diffusion coefficient and the boundary width, has been measured for the diffusion of 57Co along both high-angle and low-angle grain boundaries in high purity polycrystalline NiO. The measurements were made at an oxygen pressure of 1 atm. at temperatures in the range 500-800 C, and at an oxygen pressure of 10 to the -11 atm. at 700 C. The results show that the close similarity between the diffusion of Co and Ni in the NiO lattice is also true of the diffusion of Co and Ni along NiO grain boundaries. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1981
- Accession Number
- ADA106115
Entities
People
- A. Atkinson
- R. I. Taylor