Information
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Patent Application
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20230295779
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Publication Number
20230295779
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Date Filed
July 30, 20213 years ago
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Date Published
September 21, 2023a year ago
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Inventors
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Original Assignees
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CPC
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International Classifications
Abstract
A cubic boron nitride sintered material comprises cubic boron nitride particles and a bonding material, wherein the bonding material comprises at least one first metallic element selected from the group consisting of titanium, zirconium, vanadium, niobium, hafnium, tantalum, chromium, rhenium, molybdenum, and tungsten; cobalt; and aluminum; the cubic boron nitride sintered material has a first interface region sandwiched between an interface between the cubic boron nitride particles and the bonding material, and a first virtual line passing through a point 10 nm apart from the interface to the bonding material side; and when an element that is present at the highest concentration among the first metallic elements in the first interface region is defined as a first element, an atomic concentration of the first element in the first interface region is higher than an atomic concentration of the first element in the bonding material excluding the first interface region.
Claims
- 1. A cubic boron nitride sintered material comprising: cubic boron nitride particles in an amount of 70 vol% or more and less than 100 vol%, and a bonding material, wherein
the bonding material comprises, as constituent elements, at least one first metallic element selected from the group consisting of titanium, zirconium, vanadium, niobium, hafnium, tantalum, chromium, rhenium, molybdenum, and tungsten; cobalt; and aluminum;the cubic boron nitride sintered material has a first interface region that is a region sandwiched between an interface between the cubic boron nitride particles and the bonding material, and a first virtual line passing through a point 10 nm apart from the interface to the bonding material side; andwhen an element that is present at the highest concentration among the first metallic elements in the first interface region is defined as a first element, an atomic concentration of the first element in the first interface region is higher than an atomic concentration of the first element in the bonding material excluding the first interface region.
- 2. The cubic boron nitride sintered material according to claim 1, wherein the cubic boron nitride sintered material has a second interface region that is a region sandwiched between the interface and a second virtual line passing through a point 2 nm apart from the interface to the bonding material side, and
an atomic concentration of the first element in the second interface region is 0.7 atom% or more and 10 atom% or less.
- 3. The cubic boron nitride sintered material according to claim 1, wherein the cubic boron nitride sintered material comprises the cubic boron nitride particles in an amount of 85 vol% or more and 95 vol% or less.
- 4. The cubic boron nitride sintered material according to claim 1, wherein the first metallic element is at least one selected from the group consisting of zirconium, niobium, chromium, molybdenum, and tungsten.
- 5. The cubic boron nitride sintered material according to claim 1, wherein the first metallic element is zirconium.
- 6. A cutting tool comprising the cubic boron nitride sintered material according to claim 1.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2020-130673 |
Jul 2020 |
JP |
national |
PCT Information
Filing Document |
Filing Date |
Country |
Kind |
PCT/JP2021/028503 |
7/30/2021 |
WO |
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