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X-Ray Diffraction Line Broadening in Shock Modified Pyrite [Book Chapter]

Conference · · Shock Compression of Condensed Matter–1991
 [1];  [1];  [2]
  1. Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
  2. USDOE Pittsburgh Energy Technology Center (PETC), PA (United States)
+ Show Author Affiliations
Powder compacts of a commercially-available pyrite, FeS2, have been subjected to controlled, quantitative high pressure shock loading at peak pressures from 7.5-22 GPa. The profiles of the x-ray diffraction lines have been examined to determine the reduction of the crystallite (domain) size and the introduction of residual microstrain due to defects and dislocations resulting from the transmission and interaction of the shockwave. Pyrite experience a surprisingly smaller profile broadening than observed for all other materials under similar shock conditions, suggesting a much more refractory character. Such small changes are consistent with low defect densities and with the relative low reaction activity (oxidation of sulfide to sulfate by humid air) observed on this material in the complementary studies.
Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC04-76DP00789
OSTI ID:
5776077
Report Number(s):
SAND--91-0227C; CONF-9107105--21; ON: DE91013306; ISBN: 978-0-444-89732-9
Conference Information:
Journal Name: Shock Compression of Condensed Matter–1991
Country of Publication:
United States
Language:
English

References (7)

Stoichiometry of iron sulphides in liquefaction residues and correlation with conversion journal March 1980
Materials Modification and Synthesis Under High Pressure Shock Compression journal August 1986
Determination of crystallite size and lattice distortions through X-ray diffraction line profile analysis: Vorschriften, Methoden und Bemerkungen journal January 1982
Equations of state of iron sulfide and constraints on the sulfur content of the Earth journal March 1979
X-ray Line Broadening Study on Shock-Modified Hematite book January 1988
Decomposition of pyrite under coal liquefaction conditions: A kinetic study journal August 1982
The Importance of Consistent 1/d Scans in Determining Size and Strain by Powder Diffraction Profile Analysis book January 1990

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Related Subjects

36 MATERIALS SCIENCE
360602* -- Other Materials-- Structure & Phase Studies
CHALCOGENIDES
COHERENT SCATTERING
COMPUTER CODES
DIFFRACTION
IRON COMPOUNDS
IRON SULFIDES
MINERALS
PRESSURE EFFECTS
PYRITE
SCATTERING
SHOCK WAVES
STRAINS
SULFIDE MINERALS
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION