KIT | KIT-Bibliothek | Impressum | Datenschutz

Crystal growth of pure substances: Phase-field simulations in comparison with analytical and experimental results

Nestler, Britta; Danilov, D.; Galenko, P.

Quantitative analytical electron microscopy study of dopant
distribution in the rnicrostructure of selected Nd-alpha-sialon samples
revealed the presence of relatively large amounts of glassy phase at
quadruple pockets, which exhibited a common composition similar to a
melilite solution. Al segregants were depleted from adjacent grain
boundaries to satisfy the "stoichiometry" of such glass. Existence of
this glass results in significant deviation of the Nd-alpha-sialon
composition from the expected values, which shifts the
alpha-beta-sialon phase boundary. Only extra Nd2O3 additives enable a
monolithic alpha-sialon microstructure. The absence of similar glass in
Yb-alpha-sialon materials keeps the phase relations from such

Zugehörige Institution(en) am KIT Institut für Zuverlässigkeit von Bauteilen und Systemen (IZBS)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2005
Sprache Englisch
Identifikator ISSN: 0021-9991
KITopen-ID: 1000018704
Erschienen in Journal of Computational Physics
Verlag Elsevier
Band 207
Seiten 221-239
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
KITopen Landing Page