Concentration Dependence of Diffusion Coefficients In Metallic Solid Solution
| Autor: | Donald E. Thomas, C. Ernest Birchenall |
|---|---|
| Rok vydání: | 1952 |
| Předmět: |
Materials science
Diffusion General Engineering Analytical chemistry chemistry.chemical_element Bonding in solids 02 engineering and technology Atmospheric temperature range 021001 nanoscience & nanotechnology Copper 020501 mining & metallurgy Dilution Metal Nickel 0205 materials engineering chemistry visual_art visual_art.visual_art_medium General Materials Science 0210 nano-technology Palladium |
| Zdroj: | JOM. 4:867-873 |
| ISSN: | 1543-1851 1047-4838 |
| DOI: | 10.1007/bf03398155 |
| Popis: | 1—Diffusion coefficients in the Cu-Pd system have been determined as a function of temperature and concentration. The concentration dependence is slight in both extremes of concentration and strong at intermediate concentrations. The diffusion coefficient approaches the value of the self-diffusion coefficient of copper in dilute palladium solution. 2—A redetermination of the dependence of the diffusion coefficients at the high copper end of the Cu-Ni system confirmed a strong dependence of the diffusion coefficient on composition in the relatively dilute solutions. 3—Individual diffusion coefficients for copper and nickel atoms have been found by the use of markers at 89.9 atomic pct Cu. DCu is about 30 pet greater than DNi over the temperature range 923° to 1049°C. 4—The deviation of the diffusion coefficient at infinite dilution from the self-diffusion coefficient of the solvent metal is generally greater the greater the melting-point depression. Both factors also tend to become greater the more limited the solid solubility of the solute metal. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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