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Materials 2018, 11(1), 114; doi:10.3390/ma11010114

Pressure Induced Densification and Compression in a Reprocessed Borosilicate Glass

Department of Physics, University of Alabama at Birmingham, Birmingham, AL 35294, USA
High Pressure Collaborative Access Team, Geophysical Laboratory, Carnegie Institution of Washington, Argonne, IL 60439, USA
Ceramics and Transparent Materials Branch, U.S. Army Research Laboratory, Aberdeen Proving Ground, Aberdeen, MD 21005, USA
Author to whom correspondence should be addressed.
Received: 21 December 2017 / Revised: 7 January 2018 / Accepted: 10 January 2018 / Published: 12 January 2018
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Pressure induced densification and compression of a reprocessed sample of borosilicate glass has been studied by X-ray radiography and energy dispersive X-ray diffraction using a Paris-Edinburgh (PE) press at a synchrotron X-ray source. The reprocessing of a commercial borosilicate glass was carried out by cyclical melting and cooling. Gold foil pressure markers were used to obtain the sample pressure by X-ray diffraction using its known equation of state, while X-ray radiography provided a direct measure of the sample volume at high pressure. The X-ray radiography method for volume measurements at high pressures was validated for a known sample of pure α-Iron to 6.3 GPa. A sample of reprocessed borosilicate glass was compressed to 11.4 GPa using the PE cell, and the flotation density of pressure recovered sample was measured to be 2.755 gm/cc, showing an increase in density of 24%, as compared to the starting sample. The initial compression of the reprocessed borosilicate glass measured by X-ray radiography resulted in a bulk modulus of 30.3 GPa in good agreement with the 32.9 GPa value derived from the known elastic constants. This method can be applied to variety of amorphous materials under high pressures. View Full-Text
Keywords: borosilicate glasses; high-pressure; equation of state of material; X-ray radiography; X-ray diffraction borosilicate glasses; high-pressure; equation of state of material; X-ray radiography; X-ray diffraction

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Ham, K.J.; Kono, Y.; Patel, P.J.; Kilczewski, S.M.; Vohra, Y.K. Pressure Induced Densification and Compression in a Reprocessed Borosilicate Glass. Materials 2018, 11, 114.

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