Multiphase composites obtained by sintering reaction of boehmite and zircon part I: Development and microstructural characterization
In this work, different composites (zircon-mullite, zirconia-mullite-zirconia, mullite-zirconia and alumina-zirconia-mullite) were developed by reactive sintering of a powder mixture of boehmite (AlOOH)) and zircon (ZrSiO)4. These powder mixtures were mixed and ground by ball milling and...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
International Institute for the Science of Sintering, Beograd
2014-01-01
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| Series: | Science of Sintering |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/0350-820X/2014/0350-820X1403291B.pdf |
| Summary: | In this work, different composites (zircon-mullite,
zirconia-mullite-zirconia, mullite-zirconia and alumina-zirconia-mullite)
were developed by reactive sintering of a powder mixture of boehmite (AlOOH))
and zircon (ZrSiO)4. These powder mixtures were mixed and ground by ball
milling and then pressed in cylindrical form. Finally, the green specimens
were sintered in air during 2 hours between 1400°C and 1600°C, with a heating
and cooling rate of 5°C/min. The dilatometric curves show that there are
several microstructural transformations in these mixtures. X-rays diffraction
spectra showed formation of several composites depending on the initial
conditions (% of boehmite and zircon and sintering temperature). The
micrographic observations of the samples confirmed the presence of various
phases. |
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| ISSN: | 0350-820X 1820-7413 |