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MATÉRIAU COMPOSITE DE NITRURE DE BORE CUBIQUE, SON PROCÉDÉ D'UTILISATION, SON PROCÉDÉ DE FABRICATION ET OUTIL LE COMPRENANT
MATÉRIAU COMPOSITE DE NITRURE DE BORE CUBIQUE, SON PROCÉDÉ D'UTILISATION, SON PROCÉDÉ DE FABRICATION ET OUTIL LE COMPRENANT
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摘要
A composite material and a method of using the composite material. The composite material consists of at least 65 volume percent cubic boron nitride (cBN) grains dispersed in a binder matrix, the binder matrix comprising a plurality of microstructures bonded to the cBN grains and a plurality of intermediate regions between the cBN grains; the microstructures comprising nitride or boron compound of a metal; and the intermediate regions including a silicide phase containing the metal chemically bonded with silicon; in which the content of the silicide phase is 2 to 6 weight percent of the composite material, and in which the cBN grains have a mean size of 0.2 to 20 μm.
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