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Pressure Induced Densification and Compression in a Reprocessed Borosilicate Glass.

Kathryn J Ham1, Yoshio Kono2, Parimal J Patel3

  • 1Department of Physics, University of Alabama at Birmingham, Birmingham, AL 35294, USA. katieham@uab.edu.

Materials (Basel, Switzerland)
|January 13, 2018
PubMed
Summary

Reprocessed borosilicate glass densified by 24% under high pressure, reaching 11.4 GPa. This study validates X-ray radiography for measuring amorphous material compression and bulk modulus.

Keywords:
X-ray diffractionX-ray radiographyborosilicate glassesequation of state of materialhigh-pressure

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Area of Science:

  • Materials Science
  • Geophysics
  • Condensed Matter Physics

Background:

  • Borosilicate glass is widely used in various applications.
  • Understanding its behavior under extreme conditions is crucial for material design and geological studies.
  • Reprocessing can alter glass properties, necessitating new characterization.

Purpose of the Study:

  • To investigate the pressure-induced densification and compression of reprocessed borosilicate glass.
  • To validate X-ray radiography as a method for high-pressure volume measurements.
  • To determine the bulk modulus of the reprocessed glass.

Main Methods:

  • Utilized X-ray radiography and energy-dispersive X-ray diffraction.
  • Employed a Paris-Edinburgh (PE) press at a synchrotron X-ray source.
  • Used gold foil pressure markers and validated the radiography method with pure α-Iron.

Main Results:

  • Achieved a maximum pressure of 11.4 GPa on the reprocessed borosilicate glass.
  • Observed a 24% increase in sample density (2.755 gm/cc) after compression.
  • Determined an initial bulk modulus of 30.3 GPa, consistent with theoretical values.

Conclusions:

  • X-ray radiography is a reliable method for measuring amorphous material volume under high pressure.
  • Reprocessed borosilicate glass exhibits significant densification and compression behavior.
  • The methodology is applicable to a wide range of amorphous materials at high pressures.