Abstract
The chemical composition and structure of the Cu/MgO {222} heterophase interface is studied using a combination of transmission electron microscopy, high resolution electron microscopy and atom-probe field-ion microscopy techniques. Cu/MgO {222} interfaces are produced by forming MgO precipitates in a Cu matrix by internally oxidizing a Cu-2.8 at.% Mg alloy. The MgO precipitates have a semicoherent interface with the Cu matrix and they exhibit a cube-on-cube orientation relationship. The octahedrally-shaped MgO precipitates were analyzed using APFIM by dissecting along a 〈111〉 direction on an atomic scale. In this manner an MgO precipitate, with a {222} plane perpendicular to the axis of the APFIM, is uncovered after the Cu matrix has been mass analyzed. It is found that the terminating {222} plane of an MgO precipitate is pure oxygen, and the second {222} plane is pure Mg.
| Original language | English |
|---|---|
| Pages (from-to) | 397-400 |
| Number of pages | 4 |
| Journal | Materials Science Forum |
| Volume | 155-5 |
| DOIs | |
| Publication status | Published - 1994 |
| Externally published | Yes |
| Event | Proceedings of the International Meeting on Reactive Phase Formation at Interfaces and Diffusion Processes - Aussois, Fr Duration: 1993 May 21 → 1993 May 28 |
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering