Functional member from co-based alloy and process for producing the same
US8021499B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 7, 2008 |
| Grant date | Sep 20, 2011 |
| Priority date | — |
| Expiry date | May 24, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25F3/22
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A Co-based alloy having a fundamental composition of Co—Al system containing 3-15% Al and having lamellar structure wherein f.c.c. structure α-phase and β(B2)-phase are superimposed on each other in layers, and the Co-based alloy is modified so as to have a porous surface layer region effective for chemical retaining capability, sustained release, biocompatibility, etc. through selective removal of either the α-phase or the β-phase from the surface layer. As a third component, at least one member selected from among Ni, Fe, Mn, Ga, Cr, V, Ti, Mo, Nb, Zr, W, Ta, Hf, Si, Rh, Pd, Ir, Pt, Au, B, C and P may be contained in a total amount of 0.001 to 60%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.