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CUBIC BORON NITRIDE SINTERED COMPACT TOOL
A cubic boron nitride sintered body tool has, at least at a cutting edge, a cubic boron nitride sintered body composed of a cubic boron nitride particle and a binder phase. The content of cBN is not less than 20 volume % and not more than 60 volume %. The binder phase contains at least Al 2 O 3 and a Zr compound. On any straight line in the sintered body, the mean value of a continuous distance occupied by Al 2 O 3 is not less than 0.1 µm and not more than 1.0 µm, and the standard deviation of the continuous distance occupied by Al 2 O 3 is not more than 0.8. On the straight line, X/Y is not less than 0.1 and not more than 1 where X represents the number of points of contact between Al 2 O 3 and the Zr compound, and Y represents the sum of the number of points of contact between Al 2 O 3 and cBN and the number of points of contact between Al 2 O 3 and binder phase component(s) other than Al 2 CO 3 and the Zr compound. The Zr compound has an average particle size of not less than 0.01 µm and not more than 0.1 µm.
CUBIC BORON NITRIDE SINTERED COMPACT TOOL
A cubic boron nitride sintered body tool has, at least at a cutting edge, a cubic boron nitride sintered body composed of a cubic boron nitride particle and a binder phase. The content of cBN is not less than 20 volume % and not more than 60 volume %. The binder phase contains at least Al 2 O 3 and a Zr compound. On any straight line in the sintered body, the mean value of a continuous distance occupied by Al 2 O 3 is not less than 0.1 µm and not more than 1.0 µm, and the standard deviation of the continuous distance occupied by Al 2 O 3 is not more than 0.8. On the straight line, X/Y is not less than 0.1 and not more than 1 where X represents the number of points of contact between Al 2 O 3 and the Zr compound, and Y represents the sum of the number of points of contact between Al 2 O 3 and cBN and the number of points of contact between Al 2 O 3 and binder phase component(s) other than Al 2 CO 3 and the Zr compound. The Zr compound has an average particle size of not less than 0.01 µm and not more than 0.1 µm.
CUBIC BORON NITRIDE SINTERED COMPACT TOOL
KUBISCHES BORONNITRIDGESINTERTES KOMPAKTWERKZEUG
OUTIL COMPRENANT UN CORPS FRITTÉ EN NITRURE DE BORE CUBIQUE
OKAMURA KATSUMI (author) / ABE MACHIKO (author) / KUKINO SATORU (author)
2018-07-04
Patent
Electronic Resource
English
SINTERED CUBIC BORON NITRIDE COMPACT AND SINTERED CUBIC BORON NITRIDE COMPACT TOOL
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