Submicron Cemented Carbide with Mixed Carbides
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United States of America Patent
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Issued Date -
Jun 23, 2011
app pub date -
Jul 14, 2009
filing date -
Sep 25, 2008
priority date (Note) -
Abandoned
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Abstract
optionally means none or one or a plurality of the elements Ta, Nb, Hf, Cr, Mo or V, wherein the proportion of the face-centered cubic phase based on the total mass is 2% to 97%, preferably 5 to 12% by mass, and the microstructure of the hexagonal phase and of the face-centered cubic phase has a mean grain size of between 0.2 μm and 1 μm, preferably ≦0.9 μm, and the mean grain sizes of the hexagonal phase and of the face-centered cubic phase differ at most by 30%.
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