Diffusion, the Diffusion Coefficient, and Mechanisms of Diffusion
Diffusion is the way in which matter is transported through matter. It occurs by approximately random motions of the atoms in a crystal lattice. The net result of many such random movements of a large number of atoms is actual displacement of matter, the movement being activated by the thermal energy of the crystal. In a pure material any particular atom is continually moving from one position to another in the material. This is called self-diffusion and can be studied experimentally by the use of radioactive tracers.
KeywordsDiffusion Coefficient Surface Diffusion Volume Diffusion Interstitial Position Dislocation Pipe
Unable to display preview. Download preview PDF.
Suggested Further Reading
- 1.Jost, W., Diffusion in Solids, Liquids, and Gases, Academic Press, New York (1952).Google Scholar
- 2.Lazarus, D., Diffusion in Metals, in: Solid State Physics, Volume 10, H. Ehrenreich, F. Seitz, and D. Turnbull, eds., Academic Press, New York (1960).Google Scholar
- 3.Shewmon, P. G., Diffusion in Solids, McGraw-Hill, New York (1963).Google Scholar
- 4.Leymonie, C., Radioactive Tracers in Physical Metallurgy, Chapman and Hall, London (1963).Google Scholar
- 5.Manning, J. R., Diffusion Kinetics for Atoms in Crystals, Van Nostrand, Princeton (1968).Google Scholar
- 6.Girifalco, L. A., Atomic Migration in Crystals, Blaisdell Publishing Co., New York (1964).Google Scholar
- 7.Diffusion in Body-Centered Cubic Metals, American Society for Metals, Metals Park, Ohio (1965).Google Scholar