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Shock Synthesis of Single Crystals
Author(s) -
Batsanov Stepan S.,
Batsanov Andrei S.
Publication year - 2013
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/prep.201200169
Subject(s) - ampoule , materials science , graphite , yield (engineering) , shock (circulatory) , crystallography , compression (physics) , composite material , mineralogy , analytical chemistry (journal) , chemistry , medicine , chromatography
Shock compression of finely ground CaF 2 crystals embedded into graphite powder in cylindrical recovery ampoules was found to yield single white crystals of 0.1 mm in size within the Mach cone, where the developed temperatures/pressures are exeedingly high. The composition of these crystals CaO ⋅ 3SiO 2 ⋅ SiC is a result of chemical interactions of mixture and SiO 2 due to cumulative eruption of Si from steel walls of ampoules and its reaction with O 2 from sample pores. The atomic structure of crystals was characterized by IR spectroscopy and XRD. The formation of relatively large single crystals can take place only in the melted unloaded material.