CEMENTED CARBIDE AND CUTTING TOOL INCLUDING SAME AS SUBSTRATE

A cemented carbide includes a first hard phase and a binder phase. The first hard phase is composed of tungsten carbide grains. The binder phase includes cobalt and nickel as constituent elements. An arbitrary surface or arbitrary cross section of the cemented carbide has: a region R1 interposed bet...

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Bibliographic Details
Main Authors YAMANISHI, Takato, HAMAKI, Kensei, TSUDA, Keiichi
Format Patent
LanguageEnglish
Published 17.02.2022
Subjects
ALLOYS
CHEMISTRY
CUTTING
DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING,CUTTING-OUT, STAMPING-OUT OR SEVERING
FERROUS OR NON-FERROUS ALLOYS
HAND CUTTING TOOLS
METALLURGY
PERFORMING OPERATIONS
SEVERING
TRANSPORTING
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Summary:A cemented carbide includes a first hard phase and a binder phase. The first hard phase is composed of tungsten carbide grains. The binder phase includes cobalt and nickel as constituent elements. An arbitrary surface or arbitrary cross section of the cemented carbide has: a region R1 interposed between an interface between the tungsten carbide grains and the binder phase and an imaginary line A; a region R2 interposed between the imaginary line A and an imaginary line B; and a region R3 other than the region R1 and R2. When a line analysis is performed in a range including the region R1 and the region R3 adjacent to the region R1 with the region R2, a ratio C5/C20 of a maximum atomic concentration C5 at % of cobalt in the region R1 and a maximum atomic concentration C20 at % of cobalt in the region R3 is more than 1.
Bibliography:Application Number: US202017414023