| タイトル | Sulfur at nickel-alumina interfaces - Molecular orbital theory |
| 著者（英） | Anderson, Alfred B.; Hong, S. Y.; Smialek, James L. |
| 著者所属（英） | Case Western Reserve Univ.|NASA Lewis Research Center |
| 発行日 | 1990-01-01 |
| 言語 | eng |
| 内容記述 | Previous studies on Al-Ni alloys containing sulfur as an impurity suggest that, when S is in the interface between a metal and an oxide scale, it weakens the chemical bonding between them. This paper investigates factors responsible for this effect, using a molecular orbital theory to predict sulfur structures and electronic properties on the Ni-Al2O3 interface. It is shown that, in absence of S, the basal plane of Al2O3 will bind strongly through the Al(3+) cation surface to Ni (111). When segregated S impurity is present on the Ni surface, there are too few interfacial AlS bonds to effect good adhesion, leading to an inhibition of the oxide scale adhesion in NiCrAl alloys. |
| NASA分類 | INORGANIC AND PHYSICAL CHEMISTRY |
| レポートNO | 91A12925
E-5766 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/268589 |
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