Hysteresis in the Palladium—Hydrogen System
| Autor: | N. A. Scholtus, W. Keith Hall |
|---|---|
| Rok vydání: | 1963 |
| Předmět: |
Materials science
Hydrogen General Physics and Astronomy chemistry.chemical_element Thermodynamics Reversible process Metal Hysteresis Crystallography Compressive strength chemistry visual_art Desorption visual_art.visual_art_medium Physical and Theoretical Chemistry Absorption (chemistry) Palladium |
| Zdroj: | The Journal of Chemical Physics. 39:868-870 |
| ISSN: | 1089-7690 0021-9606 |
| DOI: | 10.1063/1.1734384 |
| Popis: | When hydrogen is dissolved in palladium, the α phase forms first; the β phase nucleates and grows in this. Because of the large volume change which accompanies the α‐to‐β transition, plastic deformation of the α phase occurs as it is stretched beyond its elastic limit. Hence, absorption is accompanied by growth of the β phase under compressive stress of the α phase, but desorption take place from the β phase of the plastically deformed solid. Since this is not a thermodynamically reversible process, hysteresis results. It is shown that the absorption loop of the isotherm can be calculated from the desorption loop and the yield strength of the metal. Some reinterpretation of earlier theories is presented. |
| Databáze: | OpenAIRE |
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