Aluminum matrix bearing metal alloy
US5104444A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Aug 7, 1989 |
| Grant date | Apr 14, 1992 |
| Priority date | — |
| Expiry date | Aug 7, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12014
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An aluminum alloy is prepared from an aluminum alloy powder having a composition of: PA0 lubricating component PA1 Pb: 3 to 15 Wt %; PA0 hardening component PA1 Si: 1 to 12 Wt %; PA0 rainforcement component PA1 one or more selected among Cu, Cr, Mg, Mn, NiZn, Fe and: 0.2 to 5.0 Wt %; PA0 and remainder of aluminum as principal material or matrix. To the aluminum alloy powder set forth above, powder state Pb in 3 to 12 Wt % is added. With the mixture of the aluminium alloy powder and Pb powder, a billet is formed. For the billet, extrustion process is performed in a extrusion ratio greater than or equal to 40. In the extruded block, Si particle dispersed in the aluminum matrix is in a grain size smaller than or equal to 12 .mu.m. Furthermore, at least of half of added Pb power particle is dispersed to have greater than or equal to 0.74 of circularity coefficient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.