Wetting agent for infiltrated aluminum preforms
US6848494B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2002 |
| Grant date | Feb 1, 2005 |
| Priority date | — |
| Expiry date | Sep 27, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C1/1063
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for the manufacture of a three-dimensional object includes the steps of forming a mixture that contains a binder, a wetting agent, and a least one of aluminum or a first aluminum-base alloy into a green composite, removing the binder from said green composite forming a porous preform structure and infiltrating the porous preform structure with a molten second aluminum base alloy to form the three-dimensional object with near theoretical density. The wetting agent assists in wetting during infiltration. The green composite may be formed by an additive process such as computer aided rapid prototyping, for example selective laser sintering. The method facilitates the rapid manufacture of aluminum components by an inexpensive technique that provides high dimensional stability and high density.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.