Alloy steel powder for powder metallurgy
US7347884B2 · kind B2 · utility
4Cited by
3References
26Claims
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Key dates
| Filing date | Aug 16, 2004 |
| Grant date | Mar 25, 2008 |
| Priority date | — |
| Expiry date | Jul 16, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F2999/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An alloy steel powder for powder metallurgy includes an iron-based powder containing about 0.5 mass percent or less of Mn as a prealloyed element and 0.2 to about 1.5 mass percent of Mo as a prealloyed element; and a Mo-containing alloy powder bonded on the surface of the iron-based powder by diffusion bonding. In the alloy steel powder for powder metallurgy, a Mo average content [Mo]T (mass percent) satisfies formula 0.8≧[Mo]T−[Mo]P≧0.05, wherein the content [Mo]P is the above prealloyed Mo content (mass percent) in the iron-based powder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.