Composite material composed of a metal matrix and of talc
US7659008B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2003 |
| Grant date | Feb 9, 2010 |
| Priority date | — |
| Expiry date | Dec 30, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31703
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The invention relates to a lubricating metal coating and to a process for its preparation. The material constituting the coating in a composite material comprising a metal matrix within which talc particles are distributed as lamellae, the metal matrix being composed of a metal chosen from Fe, Co, Ni, Mn, Cr, Cu, W, Mo, Zn, Au, Ag, Pb or Sn or of an alloy of these metals or of a metal/semimetal alloy. The coating is obtained by a process consisting in carrying out an electrolytic deposition using a solution of precursors of the metal matrix of the coating which additionally comprises talc particles in suspension, which particles are modified at the surface by irreversible adsorption of a cellulose-derived compound by replacement of all or part of the hydroxyl groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.