Composite sintered material

Composite sintered material

A composite sintered material includes: a plurality of diamond grains having an average grain size of less than or equal to 10 μm; a plurality of cubic boron nitride grains having an average grain size of less than or equal to 2 μm; and a plurality of aluminum oxide grains having an average grain si...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Watanobe, Naoki, Harada, Takashi, Okamura, Katsumi, Kukino, Satoru, Higashi, Taisuke
Format: Patent
Sprache:eng
Schlagworte:
ALLOYS
BORING
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
METALLURGY
PERFORMING OPERATIONS
TRANSPORTING
TREATMENT OF ALLOYS OR NON-FERROUS METALS
TURNING
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Beschreibung
Zusammenfassung:A composite sintered material includes: a plurality of diamond grains having an average grain size of less than or equal to 10 μm; a plurality of cubic boron nitride grains having an average grain size of less than or equal to 2 μm; and a plurality of aluminum oxide grains having an average grain size of less than or equal to 0.5 μm; and a remainder of a binder phase, wherein at least parts of adjacent diamond grains are bound to one another, the binder phase includes cobalt, in the composite sintered material, a content of the diamond grains is from 30 to 92 volume %, a content of the cubic boron nitride grains is from 3 to 40 volume %, a content of the aluminum oxide grains is from 2 to 15 volume %, and a content of the cobalt is from 3 to 30 volume %.