Secondary-Electron-Emission Phase-Angle Distributions in High-Frequency Multipacting Discharges
Numerical calculations of emission phase-angle distributions of electrons in a low-pressure, high-frequency (multipacting) electric discharge have been carried out on a Burroughs 220 digital computer....
Numerical calculations of emission phase-angle distributions of electrons in a low-pressure, high-frequency (multipacting) electric discharge have been carried out on a Burroughs 220 digital computer....
Linewidth and Temperature Shift of the R Lines in Ruby
Improved experimental data have been obtained between 20° and 350°K for the widths and temperature shifts of the R lines in ruby. Above 77°K the results can be accurately described in term...
Improved experimental data have been obtained between 20° and 350°K for the widths and temperature shifts of the R lines in ruby. Above 77°K the results can be accurately described in term...
A Model for Boundary Diffusion Controlled Creep in Polycrystalline Materials
J. Appl. Phys. 34, 1679 (1963); doi:10.1063/1.1702656
Issue Date: June 1963
You are not logged in to this journal. Log in
The creep rate (
) predicted by the boundary diffusion (Db) model is
) predicted by the boundary diffusion (Db) model is , where 
is the stress, W is the boundary width, (GS) is the average grain size, and 
is vacancy volume. The stress dependence is the same as the lattice diffusion model, given by C. Herring, while the grain size dependence and the numerical constant are greater for boundary diffusion. Discussion of the mechanism of creep in polycrystalline alumina is based on the differences between the lattice and boundary diffusion models.
©1963 The American Institute of Physics
| History: | Received 15 October 1962 |
| Permalink: |
http://link.aip.org/link/?JAPIAU/34/1679/1 |
| BUY THIS ARTICLE | (US$24) |
|
|
Connotea
CiteULike
del.icio.us
BibSonomy
REFERENCES (14)
For access to fully linked references, you need to log in.
For access to fully linked references, you need to Log in.
- F. R. N. Nabarro, Report of a Conference on the Strength of Solids (The Physical Society, London, 1948), p. 75.
- C. Herring, J. Appl. Phys. 21, 437 (1950).
- R. Folweiler, J. Appl. Phys. 32, 773 (1961).
- S. I. Warshaw and F. H. Norton,
J. Am. Ceram. Soc. 45, 479 (1962) . - E. K. Beauchamp, G. S. Baker, and P. Gibbs, “Impurity Dependence of Creep of Al2O3,” University of Utah, WADD Contract No. AF 33 (616)-6832, Project No. 0(7-7350) (1961).
- R. Chang,
J. Nucl. Mater. 2, 174 (1959) . - B. Chandler, E. C. Duderstadt, and J. White, submitted to J. Nucl. Mater.
- A. E. Paladino, Jr., and W. D. Kingery, J. Chem. Phys. 37, 957 (1962).
- S. B. Austerman, U.S. Atomic Energy Commission Report NAA-SR-3170 (1958).
- Y. Oishi and W. D. Kingery, J. Chem. Phys. 33, 480 (1960).
- A. E. Paladino and R. L. Coble, J. Am. Ceram. Soc. (to be published).
- J. F. Laurent and J. Benard,
J. Phys. Chem. Solids 7, 218 (1958) . - Another solution, by D. W. Readey, who assumed that the vacancy concentration varied with the resolved normal stress component, gave N = 1.43.
- L. W. Barr, I. M. Hoodless, J. A. Morrison, and R. Rudham,
Trans. Faraday Soc. 56, 449, 697 (1960) .
