5:15 PM - 6:30 PM
[SIT06-P04] In-situ X-ray diffraction measurement of growth kinetics of reaction rim at high pressures
Keywords:rim growth kinetics, mantle, multi-anvil apparatus
Here we use in situ X-ray measurements in conjunction with a multi-anvil apparatus to obtain the precise kinetic data of the rim growth of MgAl2O4 spinel between MgO periclase and Al2O3 corundum. Time resolved X-ray diffraction patterns enable us to obtain the information with the constant temperature, pressure, and water contents.
We succeeded to obtain the time-resolved X-ray diffraction data during the rim growth of MgAl2O4 spinel. However, the obtained growth kinetics contains large uncertainty because of the grain growth of the sample minerals due to high water contents. Further experimental improvement would be required to obtain the precise growth rate of the reaction rims.