Silver powder
US-2015314370-A1 · Nov 5, 2015 · US
Iron-based alloy powder for powder metallurgy, and sinter-forged member
US10774403B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10774403-B2 |
| Application number | US-201515533512-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 8, 2015 |
| Priority date | Dec 12, 2014 |
| Publication date | Sep 15, 2020 |
| Grant date | Sep 15, 2020 |
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- Title
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Abstract
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An iron-based alloy powder for powder metallurgy contains 2.0 mass % to 5.0 mass % of Cu, the balance being Fe and incidental impurities. From 1/10 to 8/10 of the Cu is diffusion bonded in powder-form to the surfaces of iron powder that serves as a raw material for the iron-based alloy powder, and the remainder of the Cu is contained in this iron powder as a pre-alloy. The iron-based alloy powder has superior compressibility to conventional Cu pre-alloyed iron-based alloy powders and enables production of a high strength sinter-forged member even when sintered at a lower temperature than conventional iron-based alloy powders containing mixed Cu powder.
First claim
Opening claim text (preview).
The invention claimed is: 1. An iron-based alloy powder for powder metallurgy in which Cu is diffusion bonded in powder-form to surfaces of raw material iron powder pre-alloyed with Cu, the iron-based alloy powder consisting of 2.0 mass % to 5.0 mass % of Cu, the balance being Fe and incidental impurities, wherein 1/10 to 8/10 of the Cu is diffusion bonded to the surfaces of the raw material iron powder and the remainder of the Cu is pre-alloyed, and wherein the Cu diffusion-bonded in powder form has an average particle diameter of less than 20 μm. 2. A sinter-forged member having the iron-based alloy powder of claim 1 as a precursor. 3. The iron-based alloy powder for powder metallurgy of claim 1 , wherein 2/10 to 8/10 of the Cu is diffusion bonded to the surfaces of the raw material iron powder and the remainder of the Cu is pre-alloyed. 4. The iron-based alloy powder for powder metallurgy of claim 3 , wherein 3/10 to 8/10 of the Cu is diffusion bonded to the surfaces of the raw material iron powder and the remainder of the Cu is pre-alloyed.
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Classifications
Metallic particles coated with metal · CPC title
Treatment of metallic powder (mixing with lubricating or binding agents or with organic material B22F1/10) · CPC title
Metallic powder containing lubricating or binding agents; Metallic powder containing organic material · CPC title
- B22F1/00Primary
Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties · CPC title
Using a mixture of pre-alloyed powders or a master alloy · CPC title
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- What does patent US10774403B2 cover?
- An iron-based alloy powder for powder metallurgy contains 2.0 mass % to 5.0 mass % of Cu, the balance being Fe and incidental impurities. From 1/10 to 8/10 of the Cu is diffusion bonded in powder-form to the surfaces of iron powder that serves as a raw material for the iron-based alloy powder, and the remainder of the Cu is contained in this iron powder as a pre-alloy. The iron-based alloy powd…
- Who is the assignee on this patent?
- Jfe Steel Corp, Hyundai Motor Co Ltd, Kia Motors Corp
- What technology area does this patent fall under?
- Primary CPC classification B22F1/00. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Sep 15 2020 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).