POWDERED GRIT MADE OF A FUSED CERMET
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United States of America Patent
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Issued Date -
Aug 15, 2013
app pub date -
Sep 14, 2011
filing date -
Sep 14, 2010
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Abstract
Powdered grit comprising a fused cermet of zirconium oxide (ZrO2) doped with a dopant chosen from yttrium, scandium, and a mixture of scandium and of aluminium and/or of cerium, and of nickel (Ni) and/or of cobalt (Co), said cermet having a eutectic structure, the contents, in mol %, of zirconium oxide, nickel and cobalt being such that 0.250Ni+0.176Co≦(ZrO2+dopant)≦0.428Ni+0.333Co, and said powdered grit having a median diameter D50 of between 0.3 μm and 100 μm.
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