Fusion carbide of refractory metal cementing
US-2016145723-A1 · May 26, 2016 · US
Eutectic cermets
US2019084888A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2019084888-A1 |
| Application number | US-201815962079-A |
| Country | US |
| Kind code | A1 |
| Filing date | Apr 25, 2018 |
| Priority date | Sep 21, 2017 |
| Publication date | Mar 21, 2019 |
| Grant date | — |
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Abstract
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Eutectic cermet materials include at least two carbides and a refractory metal, wherein the carbide is selected from the group of TiC, VC, ZrC, HfC, WC, NbC and TaC, and the refractory metal is tungsten. The disclosed eutectic cermet material prepared is by smelting the carbide and the refractory metal together at a temperature lower than melting temperatures of the carbide and the refractory material. The melting temperature lowered by forming a eutectic composition is to prepare the eutectic cermet materials having a fine lamellar structure. The prepared eutectic cermet materials improve hardness and toughness at use.
First claim
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What is claimed is: 1 . Eutectic cermet materials, wherein the eutectic cermet material comprises at least two carbides and a refractory metal, wherein the carbide is selected from the group of TiC, VC, ZrC, HfC, WC, NbC and TaC, the refractory metal is tungsten, wherein the eutectic cermet material is prepared by melting the carbide and the refractory metal together at a temperature lower than melting temperatures of both the carbide and the refractory metal. 2 . The eutectic cermet materials according to claim 1 , wherein the eutectic cermet material comprises tantalum, niobium, carbon and tungsten, wherein tantalum is 15˜25%, niobium is 14˜17%, carbon is 12˜20%, and tungsten is 45˜59%. 3 . The eutectic cermet materials according to claim 1 , wherein the eutectic cermet material comprises titanium, tantalum, carbon and tungsten, wherein titanium is 9˜15%, tantalum is 6˜11%, carbon is 15˜25%, and tungsten is 50˜70%. 4 . The eutectic cermet materials according to claim 1 , wherein the eutectic cermet material comprises titanium, tantalum, niobium, carbon and tungsten, wherein titanium is 7˜11%, tantalum is 4˜7%, niobium is 4˜7%, carbon is 17˜25% and tungsten is 55˜68%. 5 . The eutectic cermet materials according to claim 1 , wherein the eutectic cermet material comprises titanium, tantalum, niobium, vanadium, carbon and tungsten, wherein titanium is 7˜11%, tantalum is 4˜7%, niobium is 4˜7%, vanadium is 2˜5%, carbon is 19˜25%, and tungsten is 47˜64%. 6 . The eutectic cermet materials according to claim 1 , wherein the eutectic cermet material comprises titanium, tantalum, niobium, vanadium, zirconium, hafnium, carbon and tungsten, wherein titanium is 3˜7%, tantalum is 3˜7%, niobium is 3˜7%, f zirconium is 1˜3%, hafnium is 1˜4%, vanadium is 7˜12%, carbon is 21˜25%, and tungsten is 47˜61%.
Assignees
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Classifications
based on carbides, but not containing other metal compounds · CPC title
- C22C29/067Primary
comprising a particular metallic binder · CPC title
based on tungsten carbide · CPC title
based on titanium carbide · CPC title
- C22C1/1036Primary
starting from a melt · CPC title
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- What does patent US2019084888A1 cover?
- Eutectic cermet materials include at least two carbides and a refractory metal, wherein the carbide is selected from the group of TiC, VC, ZrC, HfC, WC, NbC and TaC, and the refractory metal is tungsten. The disclosed eutectic cermet material prepared is by smelting the carbide and the refractory metal together at a temperature lower than melting temperatures of the carbide and the refractory m…
- Who is the assignee on this patent?
- Univ Nat Tsing Hua
- What technology area does this patent fall under?
- Primary CPC classification C22C29/067. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Mar 21 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).