Sinterable bioceramics and method of manufacturing the same
AssigneeNational Taiwan University
InventorsWei-Hsing Tuan, Shu-Ting Kuo
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Abstract
The present invention discloses a method that can improve the sintering ability of calcium sulfate. The material can be used as a bio-material. This method is prepared by pre-mixing +1 and/or +2 and/or +3 and/or +4 and/or +5 valence element and/or its chemical compounds which serves as a sintering additive to calcium sulfate. During sintering, the sintering additive may form a compound and/or a glass and/or a glass-ceramic to assist the densification of the calcium sulfate. The strength and biocompatibility of the specimen after sintering are satisfactory.
Claims6
A sinterable calcium sulfate ceramic material consisting of calcium sulfate and a sintering additive, which are mixed together, wherein the sinterable calcium sulfate ceramic material is a biomaterial, the sintering additive is added to the calcium sulfate to make the non-sinterable calcium sulfate become sinterable, the sintering additive is selected from the group consisting of the +1 valence element and the compound thereof containing a sodium (Na) element and the compound thereof, and the +1 valence element and the compound thereof contain sodium hydrogen carbonate (NaHCO3).
A sinterable calcium sulfate ceramic material consisting of calcium sulfate and a sintering additive, which are mixed together, wherein the sinterable calcium sulfate ceramic material is a biomaterial, the sintering additive is added to the calcium sulfate to make the non-sinterable calcium sulfate become sinterable, the sintering additive is selected from the group consisting of the +5 valence element and the compound thereof containing a phosphorus (P) element and the compound thereof, and the +5 valence element and the compound thereof contain phosphorus pentoxide (P2O5).
A method of manufacturing a sinterable calcium sulfate ceramic material, the method comprising:
- providing calcium sulfate;
- and
- mixing a sintering additive with the calcium sulfate to prepare a mixture;
- and
- shaping the mixture in a mold to form a product;
- and
- sintering the product at a temperature ranging from 900° C. to 1400° C. to form the sinterable calcium sulfate ceramic material, which is a biomaterial, wherein the sintering additive is added to the calcium sulfate to make the non-sinterable calcium sulfate become sinterable.
Dependencies are inferred from the claim text.