Metal powder composition for use in selective laser sintering
US7258720B2 · kind B2 · utility
16Cited by
12References
15Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 19, 2004 |
| Grant date | Aug 21, 2007 |
| Priority date | — |
| Expiry date | Jun 10, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/25
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A three-dimensional object of a desired shape is made by irradiating an optical beam on a metal powder layer to form a sintered layer and by laminating such sintered layer one above another. A metal powder composition for use in making such a three-dimensional object includes an iron-based powder material, a nickel and/or nickel alloy powder material, a copper and/or copper alloy powder material, and a graphite powder material. The graphite powder material acts to enhance the wettability during melting and to reduce microcracks during solidification.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.