PCBN COMPOSITES AND METHODS OF MAKING THE SAME
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United States of America Patent
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Issued Date -
Oct 15, 2015
app pub date -
Apr 10, 2015
filing date -
Apr 11, 2014
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Abandoned
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Abstract
Polycrystalline cubic boron nitride includes cubic boron nitride grains and AlB12 between the cubic boron nitride grains. A method of manufacturing heat-treated polycrystalline cubic boron nitride includes sintering a mixture including cubic boron nitride and aluminum metal powder to form polycrystalline cubic boron nitride, and heat-treating the polycrystalline cubic boron nitride to form the heat-treated polycrystalline cubic boron nitride. A method of manufacturing polycrystalline cubic boron nitride includes sintering a mixture including cubic boron nitride and aluminum metal powder, the mixture including the cubic boron nitride in an amount of 85 vol % to 95 vol % and the aluminum metal powder in an amount of 5 vol % to 15 vol %, based on the total volume of the mixture.
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