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Meeting MS&T22: Materials Science & Technology
Symposium Emergent Materials under Extremes and Decisive In Situ Characterizations
Presentation Title Determination of P-V Equation of State of a Natural Clinoptilolite Using High Pressure Synchrotron X-ray Diffraction
Author(s) Andrew Charles Strzelecki, Stella Chariton, Cody B. Cockerham, Vitali Prakapenka, Bethany A. Chidester, Di Wu, Chris R. Bradley, Garrett Euler, Xiaofeng Guo, Hakim Boukhalfa, Hongwu Xu
On-Site Speaker (Planned) Andrew Charles Strzelecki
Abstract Scope The compression behavior of a natural HEU type zeolite, clinoptilolite, was investigated in the pressure range of 0–15 GPa using in-situ synchrotron powder XRD with a diamond-anvil cell. Clinoptilolite underwent pressure induced amorphization when the pressure exceeded 9.04 GPa and was deemed fully amorphous at 14.65 GPa. Rietveld analyses of the XRD data allowed determination of its unit-cell parameters as a function of pressure. The resulting fit to the second order Birch-Murnaghan equation of state for the clinoptilolite yielded a V0 of 2094 ± 8 ų and a K0 of 34.4 ± 1.4 GPa. The zero-pressure compressibilites of its a, b, and c axes are 10.6 (± 0.8) × 10–3 GPa–1, 5.3 (± 0.7) × 10–3 GPa–1, and 17.1 (± 1.8) × 10–3 GPa–1, respectively. The derived bulk moduli and linear compressibilites indicate that the compression behavior of clinoptilolite is highly anisotropic.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Characterization of Disordered Oxides with Neutron Total Scattering
Determination of P-V Equation of State of a Natural Clinoptilolite Using High Pressure Synchrotron X-ray Diffraction
Electrochemical Deposition with Redox Replacement of Lanthanum with Uranium in Molten LiCl-KCl
In-Situ High Temperature Neutron and X-ray Studies of Corrosion Kinetics and Salt Properties
In Situ Microstructural Characterization of Metallic Nuclear Fuels
Influence of Cementite Morphology and Its Orientation on Deformation and Fracture of Pearlitic Steel Wire
Novel Automated Approaches for Studying Extended In Situ Mechanical and High Temperature Transformations of New Materials and Alloys in Scanning Electron and X-ray Microscopy
Opportunities in High-pressure Science Enabled by Next Generation Synchrotron Sources
Structural Transformations Induced under Coupled Extreme Conditions
The Role of Anisotropic Diffusion on the Bubble/Void Superlattice Formation in Metals
Understanding Surface Radiation Damage in Concentrated Solid-Solution Alloys by Nanoindentation
In-Situ X-ray Absorption Spectroscopy of Actinide Speciation in Aqueous Fluids at Extreme Conditions

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