Retention of metastable phases in nanocrystalline ZrO2-Sc2O3 solid solutions

P.M. ABDALA; D.G. LAMAS; A.F. CRAIEVICH; M.C.A. FANTINI

2008 Activity Report of the Brazilian Synchrotron Light Laboratory

LNLS

Año: 2009 p. 1436 - 1436

1518-0204

In recent works, we found that the t"-form can be retained in nanopowders for Sc2O3 contents close to 10 mol% if the crystallite size is smaller than 25-30 nm and we also proposed a metastable phase diagram for these nanomaterials. In the present X-ray powder diffraction (XPD) study, we investigated the influence of the crystallite size on the retention of metastable phases for Sc2O3 contents in the range of 10-14 mol%.2O3 contents close to 10 mol% if the crystallite size is smaller than 25-30 nm and we also proposed a metastable phase diagram for these nanomaterials. In the present X-ray powder diffraction (XPD) study, we investigated the influence of the crystallite size on the retention of metastable phases for Sc2O3 contents in the range of 10-14 mol%.