KINETICS OF SOME SOLID STATE REACTIONS AT HIGH PRESSURE.
Technical rept. no. 18,
PENNSYLVANIA STATE UNIV UNIVERSITY PARK MATERIALS RESEARCH LAB
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The thesis comprises a kinetic study of some solid state reactions, and includes the influence of both temper ature and high pressure on the rates of transformation. The following polymorphic reactions were investigated with temperature to 700 C and pressure to 100,000 bars Si02-quartz to Si02-coesite Si02-cristobalite to Si02coesite Si02-cristobalite to Si02 quartz crystallization of Si02-glass crystallization of BeF2-glass crystallization of Ge02-glass and Ge02-quartz to Ge02-rutile. In addition, the reverse transformation of both Si02coesite and BeF2-coesite was investigated at high temperature and ambient pressure. Author