Stepped die
US-10081149-B2 · Sep 25, 2018 · US
Cermet having improved toughness and method for manufacturing the same
US11377716B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11377716-B2 |
| Application number | US-201916357417-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 19, 2019 |
| Priority date | Nov 2, 2018 |
| Publication date | Jul 5, 2022 |
| Grant date | Jul 5, 2022 |
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- Title
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Abstract
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Provided is a cermet having improved toughness, the cermet including particles each of which has a complete solid-solution carbide of two or more metals selected, including titanium, from among Group IVa, Va, and VIa metals in the periodic table and has a core/rim structure composed of a core region and a rim region, and a binder composed of a metal, wherein the composition of the Group VIa metal in the core region is lower than the composition in the rim region, and the lattice constant in the rim region is larger than that in the core region.
First claim
Opening claim text (preview).
What is claimed is: 1. A cermet comprising: particles, each of which has a complete solid solution of TiC and WC which is made from TiO 2 , WO 3 , and graphite, and has a core/rim structure composed of a core region and a rim region, and has a face centered cubic structure; and a binder composed of a metal, wherein an amount of W in the core region is lower than an amount of W in the rim region, wherein an amount of W in an interface between the core region and the rim region is gradually increased from the core region to the rim region, and wherein a lattice constant in the rim region is larger than that in the core region. 2. The cermet of claim 1 , wherein the rim region exhibits a compressive stress state. 3. The cermet of claim 1 , wherein a difference in the amounts of W between the core region and the rim region is 1 at % to 10 at %. 4. The cermet of claim 1 , wherein the binder comprises at least one selected from the group consisting of Ni, Co, and Fe.
Assignees
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Classifications
comprising a particular metallic binder · CPC title
Particles with core-rim gradient · CPC title
Aspects linked to processes or compositions used in powder metallurgy · CPC title
based on tungsten carbide · CPC title
- C22C29/10Primary
based on titanium carbide · CPC title
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- What does patent US11377716B2 cover?
- Provided is a cermet having improved toughness, the cermet including particles each of which has a complete solid-solution carbide of two or more metals selected, including titanium, from among Group IVa, Va, and VIa metals in the periodic table and has a core/rim structure composed of a core region and a rim region, and a binder composed of a metal, wherein the composition of the Group VIa met…
- Who is the assignee on this patent?
- Seoul Nat Univ R&Db Foundation
- What technology area does this patent fall under?
- Primary CPC classification C22C29/10. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jul 05 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).