| タイトル | Non-ideality near the monotectic composition of a miscibility-gap type system - Succinonitrile-water |
| 著者（英） | Facemire, B. R.; Frazier, D. O. |
| 著者所属（英） | NASA Marshall Space Flight Center |
| 発行日 | 1989-01-01 |
| 言語 | eng |
| 内容記述 | Differential scanning calorimetry (DSC) of near monotectic succinonitrile-water solutions, fast-quenched in hydrophilic and hydrophobic DSC pans, indicate, by degree of undercooling, thst there may be significant dependence of final ingot microstructure on the pre-quench equilibration temperature. Partial molal-volume determinations from density data, along with DSC data, suggest the nature of temperature dependent component associations from 20 to 55 C in homogeneous solutions. The undercooling profile in a hydrophilic container is explained in terms of solution-composition shifts arising from the Gibbs surface excess. The evidence shows that temperature-dependent preferred component aggregates may modulate surface-composition gradients. Similar effects may be present through intermetallic compound formation in metallic monotectic alloys. |
| NASA分類 | INORGANIC AND PHYSICAL CHEMISTRY |
| レポートNO | 90A16272 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/359518 |
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