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Polymorphic Activity Generated in Soda-Lime Glass at Hyper-Velocity Impact

ROSHDY G. BARSOUM, PHILIP J. DUDT, SYED QADRI, WILLIAM FERRANDO

Abstract


Polymorphic transformations are key in assessing the unusual response of glassy materials to hyper-velocity particle impacts. Examination of soda-lime glass impacted under hyper-velocity conditions indicates formation of Stishovite, a high-density polymorph and formation of other more common crystalline silica phases, a-quartz and b-crystobalite. These findings along with molecular dynamic computer analysis support further understanding of these interactions for compounding new glass chemistries and predicting performance against a wider variety of impactors. These findings can also help elucidate interpretations of meteoric minerals that may have been vitrified in reaching the earth or evaluation of other recovered space materials in the future.

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