Titanium powder, titanium material, and method for producing titanium powder containing solid-soluted oxygen
US-2016332233-A1 · Nov 17, 2016 · US
Hard sintered body
US11313017B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11313017-B2 |
| Application number | US-201816493197-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 12, 2018 |
| Priority date | Mar 13, 2017 |
| Publication date | Apr 26, 2022 |
| Grant date | Apr 26, 2022 |
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- Title
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Abstract
Official abstract text for this publication.
The present invention provides a sintered body containing W and WC, having excellent hardness, strength, compactness, and corrosion resistance, without containing W2C, and capable of being used for the purpose of a cutting tool or a glass molding die, or a seal ring. There is provided a sintered body containing 4 to 50 vol % of tungsten metal as binder phases, 50 to 95 vol % of tungsten carbide (WC), and 0.5 to 5.0 vol % of tungsten oxide (WO2), in which the tungsten oxide (WO2) has an average grain size of 5 nm to 150 nm and is present in a sintered body structure at an average density of 5 to 20 particles/μm2.
First claim
Opening claim text (preview).
What is claimed is: 1. A sintered body comprising: 4 to 50 vol % of tungsten metal as binder phase; 50 to 95 vol % of tungsten carbide (WC); and 0.5 to 5.0 vol % of tungsten oxide (WO 2 ), wherein the tungsten oxide (WO 2 ) has an average grain size of 5 nm to 150 nm and is present in a sintered body structure at an average density of 5 to 20 particles/μm 2 , and the tungsten oxide (WO 2 ) is dispersed in the sintered body structure. 2. The sintered body according to claim 1 , wherein the sintered body structure does not contain W 2 C. 3. The sintered body according to claim 1 , wherein a fracture toughness value of the sintered body is 6.7 MPa·m 1/2 or greater.
Assignees
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Classifications
Mixtures of metal powder with non-metallic powder (C22C1/08 takes precedence) · CPC title
based on oxides · CPC title
Metallic powder containing lubricating or binding agents; Metallic powder containing organic material · CPC title
Nanosized particles · CPC title
Carbide · CPC title
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Frequently asked questions
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- What does patent US11313017B2 cover?
- The present invention provides a sintered body containing W and WC, having excellent hardness, strength, compactness, and corrosion resistance, without containing W2C, and capable of being used for the purpose of a cutting tool or a glass molding die, or a seal ring. There is provided a sintered body containing 4 to 50 vol % of tungsten metal as binder phases, 50 to 95 vol % of tungsten carbide…
- Who is the assignee on this patent?
- Mitsubishi Materials Corp
- What technology area does this patent fall under?
- Primary CPC classification B22F1/12. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Apr 26 2022 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).