Steklo i Keramika (Glass and Ceramics). Monthly scientific, technical and industrial journal

 

ISSN 0131-9582 (Online)

  • Continuous numbering: 1022
  • Pages: 32-38
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Heading: Biomaterials

Biphasic ceramic containing hydroxyapatite Ca 10 (PO 4 ) 6 (OH) 2 and ? -tricalcium phosphate ? ; -Cа 3 (PO 4 ) 2 , obtained from single-phase nanocrystalline calcium phosphate powder with the apatite structure, synthesized from aqueous solutions of calcium acetate and hydrogen phosphate ammonium at a Ca / P molar ratio of 1.5 without pH adjustment at room temperature. After firing at 1100 ° C, the material contained 75% ?-Ca 3 (PO 4 ) 2 , and the grain size did not exceed 600 nm ... It is proposed to consider carbon formed in the range of 200-500 ° C as a result of carbonization of the organic components of synthesis adsorbed by the powder particles as a physical barrier that prevents intense mass transfer up to 800 ° C, which contributes to the production of ultradispersed ceramics with a grain size of less than 1 ?m.
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Safronova T. V., Putlyaev V. I., Kazakova G. K., Korneychuk S. A. Biphase ceramics in СаО - Р2О5 system synthesised from calcium acetate and ammonium hydrophosphate. Steklo i keramika. 2013:86(2):32-38. (in Russ). UDK 666.3:546.41'33'18