Cemented carbide and tool containing the same
AssigneeSumitomo Electric Industries, Ltd.
InventorsYasuki Kido, Katsumi Okamura, Takashi Sekiya
Life of this patent
Estimating the term…
Abstract
A cemented carbide including tungsten carbide grains and a binder phase, in which a total content of the tungsten carbide grains and the binder phase in the cemented carbide is no less than 80 vol %, a content of the binder phase in the cemented carbide is no less than 0.1 vol % and no more than 20 vol %, in a histogram showing distribution of orientation differences between adjacent pairs each consisting of two of the tungsten carbide grains adjacent to each other in the cemented carbide, a first peak is present in a class of the orientation differences of no less than 29.5° and less than 30.5°.
Claims7
A cemented carbide comprising tungsten carbide grains and a binder phase,
- wherein a total content of the tungsten carbide grains and the binder phase in the cemented carbide is no less than 80 vol %,
- a content of the binder phase in the cemented carbide is no less than 0.1 vol % and no more than 20 vol %,
- in a histogram showing distribution of orientation differences between adjacent pairs each consisting of two of the tungsten carbide grains adjacent to each other in the cemented carbide, a first peak is present in a class of the orientation differences of no less than 29.5° and less than 30.5°,
- the classes along a horizontal axis of the histogram indicate the orientation differences, and a width of the class is 1.0°, and
- a frequency along a vertical axis of the histogram indicates a ratio of the number of the adjacent pairs belonging to each class to the number of all of the adjacent pairs in the cemented carbide.
Dependencies are inferred from the claim text.