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Method of producing Sl.sub.3 N.sub.4 reinforced monoclinic BaO.multidot.Al.sub.2 O.sub.3 .multidot.2SiO.sub.2 and SrO.multidot.Al.sub. O.sub.3 .multidot.2SiO.sub.2 ceramic composites

US Patent 5578534 · Granted Nov 26, 1996

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