The structure and texture genesis of apatite-type lanthanum silicates during their synthesis by co-precipitation

Tamara Kharlamova, Olga Vodyankina, Alexander Matveev, Vassilis Stathopoulos, Arcady Ishchenko, Dzhalil Khabibulin, Vladislav Sadykov

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Peculiarities of genesis of the structure and texture of apatite-type lanthanum silicates, both undoped and doped with aluminum, in the course of co-precipitation followed by sediment thermal treatment were elucidated by using a combination of methods including thermal analysis, XRD, IR spectroscopy, low-temperature adsorption of nitrogen, 27Al and 29Si MAS NMR spectroscopy and TEM with EDX analysis. An amorphous lanthanum silicate with the short-range ordering typical for ortho-diorthosilicate was shown to be formed in the course of precipitation, while its crystallization proceeds via rearrangement of the polymeric structure of primary particles during subsequent thermal treatment.

Original languageEnglish
Pages (from-to)13393-13408
Number of pages16
JournalCeramics International
Volume41
Issue number10
DOIs
Publication statusPublished - 26 Jun 2015

Keywords

  • Apatite
  • Co-precipitation
  • Formation mechanism
  • Lanthanum silicate

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