INVESTIGADORES
RENDTORFF BIRRER Nicolas Maximiliano
artículos
Título:
Phase quantification of mullitezirconia and zircon commercial powders using PAC and XRD techniques
Autor/es:
N. RENDTORFF; M.C. CONCONI; E. AGLIETTI; YAMIL CHAIN; ALBERTO PASQUEVICH; PATRICIA RIVAS; JORGE MARTINEZ; MARIA C. CARACOCHE
Revista:
HYPERFINE INTERACTIONS
Editorial:
SPRINGER
Referencias:
Año: 2010 vol. 198 p. 211 - 218
ISSN:
0304-3843
Resumen:
Abstract The short range technique of the Perturbed Angular Correlation (PAC)
and x-ray diffraction (Rietveld) methods have been employed to determine the phase
content in commercial mullitezirconia and zircon raw materials that are ordinarily
used to produce ceramic materials. The PAC technique, which probes zirconiumcontaining
compounds at nanoscopic level, showed that zircon contains crystalline
ZrSiO4 and an important amount of a structurally distorted zircon, which is also observed
accompanying monoclinic zirconia in mullitezirconia. This particular zircon
phase was not detected by the long range x-ray diffractionRietveld technique. After
an annealing treatment, important changes in crystalline contents of the powders
allow confirming, by the x-ray diffractionRietveld method, the preexistence of
this particular zircon phase. This fact must be taken into