| 摘要 |
Embodiments of apparatus, systems, and methods relating to biomedical implants and other devices made up of unique and improved alumina-zirconia ceramic materials. In an example of a method according to an implementation of the invention, a slurry is prepared, compressed, and fired to obtain a fired ceramic piece comprising at least aluminum oxide, zirconium dioxide, yttrium oxide, cerium oxide, strontium oxide, magnesium oxide, titanium dioxide, and calcium oxide. Some embodiments and implementations may comprise selected concentrations of one or more such compounds to yield certain preferred results. |
| 主权项 |
1. A method for manufacturing a ceramic biomedical implant, the method comprising the steps of:
preparing a first feedstock by mixing ingredients comprising at least aluminum oxide and strontium carbonate or ingredients selected to yield aluminum oxide and strontium carbonate; preparing a second feedstock by mixing ingredients comprising at least aluminum oxide and calcium carbonate or ingredients selected to yield aluminum oxide and calcium carbonate; preparing a slurry comprising materials from the first feedstock, materials from the second feedstock, and further comprising additional ingredients configured to yield at least a portion of a ceramic biomedical implant comprising at least aluminum oxide, zirconium dioxide, yttrium oxide, cerium oxide, strontium oxide, magnesium oxide, titanium dioxide, and calcium oxide; forming a compact derived from the slurry; firing the compact to obtain a fired piece; after the step of firing the slurry, compressing the fired piece; and reoxidizing the fired piece, wherein, following the step of reoxidizing the fired piece, the fired piece comprises at least aluminum oxide, zirconium dioxide, yttrium oxide, cerium oxide, strontium oxide, magnesium oxide, titanium dioxide, and calcium oxide. |
