Abstract
The distribution of cationic vacancies in transition aluminas obtained by dehydration of boehmite has been investigated using HRTEM combined with an image simulation technique. Interstitial vacancies in a cubic-packed oxygen network have been found to be concentrated in an orderly fashion on low indexed lattice planes like the {110} and {100} planes of a spinel structure. Such arrangements of cationic vacancies on octahedral sites result in modified transition aluminas with lattice parameters a=a(gamma), b=a(gamma) or 2a(gamma), c=3a(gamma), where a(gamma)=0.79 nm is the lattice constant of the spinel structure of gamma-Al2O3.
| Original language | English |
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| Title of host publication | EUROMAT 97 - PROCEEDINGS OF THE 5TH EUROPEAN CONFERENCE ON ADVANCED MATERIALS AND PROCESSES AND APPLICATIONS: MATERIALS, FUNCTIONALITY & DESIGN, VOL 4 |
| Editors | LAJ Sarton, HB Zeedijk |
| Place of Publication | ZWIJNDRECHT |
| Publisher | Netherlands Society for Material Science |
| Pages | 73-76 |
| Number of pages | 4 |
| ISBN (Print) | 90-803513-4-2 |
| Publication status | Published - 1997 |
| Event | 5th European Conference on Advanced Materials and Processes and Applications (EUROMAT 97) - , Netherlands Duration: 21-Apr-1997 → 23-Apr-1997 |
Other
| Other | 5th European Conference on Advanced Materials and Processes and Applications (EUROMAT 97) |
|---|---|
| Country/Territory | Netherlands |
| Period | 21/04/1997 → 23/04/1997 |