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Topotactically Oriented α‐Si 3 N 4 Cores in Sintered β‐Si 3 N 4
Author(s) -
Krämer Martin
Publication year - 1993
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1993.tb03954.x
Subject(s) - nucleation , crystallite , transmission electron microscopy , materials science , beta (programming language) , mineralogy , alpha (finance) , crystallography , chemical engineering , metallurgy , chemistry , nanotechnology , medicine , construct validity , nursing , organic chemistry , computer science , engineering , patient satisfaction , programming language
α‐Si 3 N 4 core structures within β‐Si 3 N 4 grains have been studied by transmission electron microscopy. The grains were dispersed in an oxynitride glass which was previously melted at 1600°C. The cores were topotactically related to the as‐grown β‐Si 3 N 4 crystallites and are related to epitactical nucleation during heat treatment as the most probable mechanism.