| abstract |
The invention relates to the production of phosphate glass ceramics by controlled crystallization of phosphatin converters via the targeted use of nucleating agents which, under suitable temperature conditions, lead to the precipitation of primary crystal phases insoluble in the glass and thus initiate volume crystallization via epitaxial interaction. These nucleating agents are z. For example, the oxides of manganese, iron, nickel and zirconium, which form mixed heavy-soluble phosphates of the varulite or Brianit type as primary crystal phases in the crystallization of alkali-alkaline earth aluminophosphate glasses. These glass-ceramics represent new phosphate materials, some of which, due to their bioactive behavior, can find medical use as an implant material for bone and hard tissue replacement, possibly as a composite or composite material. |