Determination of the grain boundary diffusion coefficient of oxygen in Cr2O3
โ Scribed by H. G. Sockel; B. Saal; M. Heilmaier
- Publisher
- John Wiley and Sons
- Year
- 1988
- Tongue
- English
- Weight
- 219 KB
- Volume
- 12
- Category
- Article
- ISSN
- 0142-2421
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
The grain boundary diffusion in a binary system which exhibits a grain boundary phase transition is considered in the framework of Fisher's model. The kinetic law of the growth of the grain boundary phase and the distribution of the diffusant near the grain boundary are calculated. The method of det
The yttrium doping effect on grain boundary diffusion was directly estimated using bicrystal experiments. For this purpose, pristine and yttrium-doped a-Al 2 O 3 bicrystals with the same geometrical configuration were fabricated. The grain boundary oxygen diffusion coefficients were measured by the
We have measured the diffusion of aNi radiotracer into polycrystalline NiO. nominally doped with 0.1% Cr (Cr/Ni ratio) in the temperature range 600 to 900ยฐC. The experiments show that Cr doping increases diffusion of Ni in the oxide lattice, but decreases diffusion of Ni along grain boundaries provi