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Shock-induced changes in HgO powder [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 1995.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
8 pages : digital, PDF file
Additional Creators
Sandia National Laboratories, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Powder compacts of HgO were subjected to explosively-generated shock-wave loading in Sandia Bear fixtures and recovered for analysis. Although XRD powder spectra show only the orthorhombic form of HgO in both the as-received and recovered samples, XRD line profiles and TEM indicate up to an order of magnitude increase in crystallite size. Magnetic data reveal a superconducting transition below 4.2 K that is attributed to metallic α-Hg formed by a partial, shock-induced decomposition of the HgO, consistent with TEM identification of α-Hg particles using a cold stage. In addition, paramagnetic impurities present in the as-received HgO powder appear to be partially converted to a ferromagnetic or ferrimagnetic phase that dominates the magnetic properties of the recovered powder. The amounts of both the superconducting and ferromagnetic phases vary strongly with position within the shock recovery capsules.
Report Numbers
E 1.99:sand--95-1969c
E 1.99: conf-950856--5
conf-950856--5
sand--95-1969c
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
10/01/1995.
"sand--95-1969c"
" conf-950856--5"
"DE96000763"
4. international conference on metallurgical and materials applications of shock-wave and high-strain-rate phenomena, El Paso, TX (United States), 6-10 Aug 1995.
Graham, R.A.; Dunn, R.G.; Venturini, E.L.; Morosin, B.; Newcomer, P.P.; Holman, G.T.
Funding Information
AC04-94AL85000
View MARC record | catkey: 14455238