Effect of dopants on the in-situ formation of metal-ceramic microstructures by partial reduction reactions
Conference
·
OSTI ID:96556
- Cornell Univ., Ithaca, NY (United States); and others
Metal-ceramic multi-phase microstructures can be obtained by partial reduction of ternary or higher ceramic oxides. This has been experimentally investigated in the Fe-Mn-O system by changing the oxygen partial pressure at constant temperature and total pressure. Dopants, such as Al{sub 2}O{sub 3}, CaO, Cr{sub 2}O{sub 3} and ZrO{sub 2}, were added to the initial, polycrystalline oxide solid solution (Fe{sub 1-x}Mn{sub x})O. Electron microscopy studies were performed for microstructural characterization, phase identification and chemical analysis. It was observed that dopants strongly influence the location of the metal precipitation during reduction. The experimental observations are discussed based on solubility limits and the segregation of dopants.
- OSTI ID:
- 96556
- Report Number(s):
- CONF-940416--; CNN: Grant N00014-92-J-1526; Award DMR-9121654
- Country of Publication:
- United States
- Language:
- English
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