Porous metal structures and processes for their production
US5592686A · kind A · utility
Inventors
Key dates
| Filing date | Jul 25, 1995 |
| Grant date | Jan 7, 1997 |
| Priority date | — |
| Expiry date | Jul 25, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12042
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process is provided for the manufacture of porous metal components. The process involves preparing a colloidal suspension comprising a metal-containing powder in admixture with a binder system, and a plasticizer in an organic solvent. Optionally, a particulate pore forming agent may be added to the suspension. The suspension is cast into a thin sheet and air dried to thereby form a tape. The tapes are layered and formed by compacting at predetermined pressures to laminate the tapes, thus forming a green body. Optionally, a second pore-forming agent may be introduced between, or associated with, the tape layers. The green body is heated at a controlled rate to form a brown body, and finally sintered under controlled conditions to produce the finished component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.