Heterogeneous Nucleation in the Intergranular Phase of a SiAlON
Szabo, D. V.
; Campbell, G. H.; Brulely, J.; Hoffmann, M. J.; Ruhle, M.
; Campbell, G. H.; Brulely, J.; Hoffmann, M. J.; Ruhle, M.Abstract:
A SiAlON ceramic with yttria as a sintering aid has been fabricated and
subjected to a 1-h heat treatment at 1150-degrees-C.Microstructural
characterization by analytical electron microscopy and diffraction
analysis indicates that the residual intergranular phase crystallizes
into a metastable hexagonal phase (Y2SiAlO5N) and mullite.The mullite
appears as a characteristically shaped precipitate forming with a
definite orientation relationship on the (1010BAR) facets of SiAlON
grains.The absence of a residual amorphous film between the
precipitate and the SiAlON indicates that the precipitation occurred in
a heterogeneous manner on the surface of the SiAlON.
subjected to a 1-h heat treatment at 1150-degrees-C.Microstructural
characterization by analytical electron microscopy and diffraction
analysis indicates that the residual intergranular phase crystallizes
into a metastable hexagonal phase (Y2SiAlO5N) and mullite.The mullite
appears as a characteristically shaped precipitate forming with a
definite orientation relationship on the (1010BAR) facets of SiAlON
grains.The absence of a residual amorphous film between the
precipitate and the SiAlON indicates that the precipitation occurred in
a heterogeneous manner on the surface of the SiAlON.
| Zugehörige Institution(en) am KIT | Fakultät für Maschinenbau – Institut für Keramik im Maschinenbau (IKM) |
| Publikationstyp | Zeitschriftenaufsatz |
| Publikationsjahr | 1992 |
| Sprache | Englisch |
| Identifikator | ISSN: 0002-7820, 1551-2916 urn:nbn:de:swb:90-77993 KITopen-ID: 1000007799 |
| Erschienen in | Journal of the American Ceramic Society |
| Verlag | American Ceramic Society |
| Band | 75 |
| Heft | 1 |
| Seiten | 249-252 |
| Nachgewiesen in | Dimensions Scopus Web of Science |