Producing a ceramic implant by coating a powder mixture of zirconia and either tricalcium phosphate or hydroxyapatite on a molded unsintered body of partially stabilized zirconia and then sintering the article
US5185177A · kind A · utility
24Cited by
9References
8Claims
0Family size
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Key dates
| Filing date | Oct 15, 1990 |
| Grant date | Feb 9, 1993 |
| Priority date | — |
| Expiry date | Oct 15, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2237/348
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A process for producing a ceramic implant which comprises creating a powder mixture comprising zirconia and .alpha.-tricalcium phosphate or zirconia and hydroxyapatite, in a weight ratio of 0.05 to 20 on the surface of a molded unsintered product of partially stabilized zirconia, followed by sintering at 1200.degree. to 1550.degree. C. The partially stabilized zirconia may have a BET specific surface area of from 5 to 10 m.sup.2 /g and have been subjected to wet pulverization to increase the BET specific surface area from 1.05 to 2.0 times relative to the starting material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.