Two-dimensional arrays of transition metal nitride nanocrystals
US-2022073350-A1 · Mar 10, 2022 · US
Ceramic powder and boron nitride sintered material
US10954166B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10954166-B2 |
| Application number | US-201916297169-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 8, 2019 |
| Priority date | Mar 9, 2015 |
| Publication date | Mar 23, 2021 |
| Grant date | Mar 23, 2021 |
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Abstract
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A ceramic powder containing at least one of a nitride and a carbonitride of a metal element as a major component, the metal element being one or more elements selected from the group consisting of a group 4 element, a group 5 element and a group 6 element, the ceramic powder having particles having an average particle size of 5 μm or less, and an oxygen content of 0.3% by mass or less.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for producing a ceramic powder, comprising: heating in a purified gas, heating under low oxygen partial pressure, or treating by thermal plasma a raw ceramic powder, wherein the raw ceramic powder contains at least one of a nitride and a carbonitride of one or more elements selected from the group consisting of a group 4 element, a group 5 element and a group 6 element, the ceramic powder contains at least one of a nitride and a carbonitride of a metal element, the metal element is one or more elements selected from the group consisting of a group 4 element, a group 5 element and a group 6 element, and the ceramic powder has an average particle size of 5 μm or less and an oxygen content of 0.1% by mass or less. 2. The method for producing a ceramic powder according to claim 1 , wherein the raw ceramic powder contains the nitride of one or more elements selected from the group consisting of the group 4 element, the group 5 element and the group 6 element, the ceramic powder contains the nitride of the metal element, and the ceramic powder has a carbon content of 0.3% by mass or less. 3. The method for producing a ceramic powder according to claim 2 , wherein the carbon content is 0.1% by mass or less. 4. The method for producing a ceramic powder according to claim 1 , wherein the metal element is titanium. 5. The method for producing a ceramic powder according to claim 1 , wherein the ceramic powder has a proportion of particles having a particle size of 1 μm or less being less than 10% by mass. 6. A method for producing a boron nitride sintered material, comprising: producing a ceramic powder by a method as recited in claim 4 ; and sintering a composite powder including cubic boron nitride and the ceramic powder.
Assignees
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Classifications
- C01B21/076Primary
with titanium or zirconium {or hafnium} · CPC title
Refractory metal nitrides, e.g. vanadium nitride, tungsten nitride · CPC title
Compositional purity · CPC title
Submicrometer sized, i.e. from 0.1-1 micrometer · CPC title
Boron nitrides · CPC title
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- What does patent US10954166B2 cover?
- A ceramic powder containing at least one of a nitride and a carbonitride of a metal element as a major component, the metal element being one or more elements selected from the group consisting of a group 4 element, a group 5 element and a group 6 element, the ceramic powder having particles having an average particle size of 5 μm or less, and an oxygen content of 0.3% by mass or less.
- Who is the assignee on this patent?
- Sumitomo Electric Industries
- What technology area does this patent fall under?
- Primary CPC classification C01B21/076. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 23 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).