Abstract
The influence of the addition of impurities and changes in the oxygen partial pressure on the formation of metal-ceramic microstructures by partial reduction of ternary or higher ceramic oxides was experimentally investigated in the model system Fe-Mn-O at constant temperature and total pressure. Electron microscopy studies were performed for microstructural characterization, phase identification and chemical analysis. It was observed that the addition of dopants such as BaO, CaO, MgO, SrO, Al2O3, Cr2O3 or ZrO2 to the initial, polycrystalline oxide solid solution (Fe1-xMnx)1-ΔO strongly influences the location and rate of metal precipitation during reduction. Experimental observations are discussed based on solubility limits and the segregation of dopants.
| Original language | English |
|---|---|
| Pages (from-to) | 95-100 |
| Number of pages | 6 |
| Journal | Materials Research Society Symposium - Proceedings |
| Volume | 365 |
| Publication status | Published - 1995 |
| Externally published | Yes |
| Event | Proceedings of the 1994 Fall Meeting - Boston, MA, USA Duration: 28 Nov 1994 → 2 Dec 1994 |