PROGRESSIVE TRANSFORMATION FROM QUARTZ TO AMORPHOUS SILICA BY SHOCK PRESSURE - ROLE OF THE ALPHA-]BETA TRANSITION

Authors
CHEMARIN C PANCZER G BADJUKOV DD CHAMPAGNON B
Citation
C. Chemarin et al., PROGRESSIVE TRANSFORMATION FROM QUARTZ TO AMORPHOUS SILICA BY SHOCK PRESSURE - ROLE OF THE ALPHA-]BETA TRANSITION, Berichte der Bunsengesellschaft fur Physikalische Chemie, 100(9), 1996, pp. 1396-1398
Citations number
12
Categorie Soggetti
Chemistry Physical
Journal title
Berichte der Bunsengesellschaft fur Physikalische Chemie
ISSN journal
00059021 → ACNP
Volume
100
Issue
9
Year of publication
1996
Pages
1396 - 1398
Database
ISI
SICI code
0005-9021(1996)100:9<1396:PTFQTA>2.0.ZU;2-V
Abstract
The transformation from crystalline alpha-quartz to silica glass under shock pressure is followed, in the intermediate phase where both crys talline and amorphous SiO2 are detected, by Raman microspectrometry. E xperiments are carried out on samples recovered from increasing peak p ressure. The evolution of the crystalline phase is compared to the evo lution of alpha-quartz with a thermal annealing. No observation is mad e for a beta-phase transformation before full amorphization of the mat erial.