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Shock-induced irreversible phase transitions in inorganic solids

Authors
Journal
Journal of Physics and Chemistry of Solids
0022-3697
Publisher
Elsevier
Publication Date
Volume
27
Issue
9
Identifiers
DOI: 10.1016/0022-3697(66)90140-5

Abstract

Abstract A technique for the toroidally symmetrical implosion of non-metallic solids has been developed, and satisfactory recovery of shocked materials achieved. A procedure to quench a heat-sensitive high-pressure phase produced by a pressure pulse has been demonstrated. New examples of shock-induced phase changes have been found in the reconstructive transitions litharge → massicot,β → α lead dioxide, and cadmium sulfide (wurtzite → zincblende via the sodium chloride structure). A shock-induced ionic displacement transition has been observed in calcite → aragonite. By analogy with static experiments involving shear it is concluded that both types of phase transitions obtained here by the converging shockwave technique take place by a shear mechanism.

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