Ceramic material and process for manufacturing
AssigneeCerBio Tech AB
InventorsNiklas Axén, Leif Hermansson, Tobias Persson, Kajsa Björklund, Lars Kraft
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Abstract
A chemically bonded ceramic material based on calcium aluminate hydrate with additives of primarily calcium titanate, but also chemically similar compounds. The material is a biocompatible material for implants, particularly for orthopaedic and dental applications. The material possesses the properties required for an orthopaedic biocement. It cures through reaction with water and develops its strength within a short period of time, has good workability prior to curing, is shape stable, has a low heat generation during curing, and is friendly to adjacent tissues.
Claims23
Chemically bonded ceramic material, comprising:
- 50–99 wt. % of a binding phase system based on partially or fully hydrated calcium aluminate,
- 1–50 wt. % of an inert additive, which is a ternary oxide of the perovskite structure described by the formula ABO3, where O is oxygen and A and B are metals, and
- wherein the amount of the inert additive is equal to or less than the amount of said binding phase.
Method for manufacturing a ceramic material that has 50–99 wt. % of a binding phase system based on partially or fully hydrated calcium aluminate, 1–50 wt. % of an inert additive, which is a ternary oxide of the perovskite structure described by the formula ABO3, where O is oxygen and A and B are metals, and wherein the amount of the inert additive is equal to or less than the amount of said binding phase, the method comprising the steps of:
- preparing a slurry comprising calcium aluminate, inert additives and a curing agent, and
- curing said slurry.
Ceramic powder composition, comprising:
- 50–99 wt. % of a binding phase system based on calcium aluminate,
- 1–50 wt. % in volume of an inert additive, which is a ternary oxide of the perovskite structure described by the formula ABO3, where O is oxygen and A and B are metals, and
- wherein the amount of the inert additive is equal to or less than the amount of said binding phase.
Dependencies are inferred from the claim text.