M-Doped Al2TiO5 (M=Cr, Mn, Co) solid solutions and their use as ceramic pigments

Autores: Dondi, M.|Lyubenova, T.S.|Carda, J.B.|Ocaña, M.
Fuente: J. Am. Ceram. Soc.
92 (9), 1972-1980

New ceramic pigments based on the tialite (Al2TiO5) structure, doped with Co (pink), Cr (green), or Mn (brown), were prepared through the pyrolysis of aerosols followed by calcination of the obtained powders at 1400°C. The expected decomposition of Al2TiO5 into a mixture of Al2O3 and TiO2 on refiring was inhibited by Cr-doping and also by co-doping with Mg the Mn- or Co-doped samples. Microstructure and phase evolution during pigment preparation were monitored by scanning electron microscopy and XRPD. Unit cell parameters of tialite were determined by Rietveld refinement of the X-ray diffraction patterns, revealing in all cases the formation of solid solutions where the solubility of dopants in the Al2TiO5 lattice followed the trend Co

Si desea obtener más información sobre este contenido contacte con nuestro Centro de Documentación

Regístrate para leer más