Metal matrix compositions for neutron shielding applications
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United States of America Patent
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Dec 23, 1997
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N/A
app pub date -
Jul 1, 1996
filing date -
Jul 1, 1996
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Abstract
A neutron shield is formed of a boron carbide-metal matrix composite having a density ranging from 2.5 to 2.8 g/cm.sup.3 and a composition ranging from approximately 10 to 60 weight % of boron carbide and 40 to 90 weight % of metal matrix. The metal matrix is aluminum, magnesium, titanium, or gadolinium or one of their alloys. The boron carbide includes one or more metal elements added to improve the chelating properties of the metal matrix material by forming intermetallic bonds with the metal matrix material. The metal additives are present in the composite in an amount less than approximately 6% by weight. The shield may be in container or plate form.
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