Cubic Si6-zAlzOzN8-z (z=1.8 and 2.8) spinels formed by shock compression

Citation
T. Sekine et al., Cubic Si6-zAlzOzN8-z (z=1.8 and 2.8) spinels formed by shock compression, CHEM P LETT, 344(3-4), 2001, pp. 395-399
Citations number
26
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
CHEMICAL PHYSICS LETTERS
ISSN journal
0009-2614 → ACNP
Volume
344
Issue
3-4
Year of publication
2001
Pages
395 - 399
Database
ISI
SICI code
0009-2614(20010824)344:3-4<395:CS(A2S>2.0.ZU;2-R
Abstract
We present the formation of cubic Si6-zAlzOzN8-z (z = 1.8 and 2.8) spinels by shock compressions from the corresponding P-sialon. Formed sialon spinel s coexist with considerable amounts of the amorphous phase. The amorphizati on is considered to be a solid-solid reaction due to the sluggish phase tra nsition under shock compression. The lattice parameter of the spinel increa ses and the density decreases with increasing z parameter. Shock-synthesize d sialon spinels are nanocrystals with most grain sizes less than 30 nm and consist of main units of SiN4, SiN6 and AlO6. (C) 2001 Elsevier Science B. V. All rights reserved.