TY - JOUR
T1 - The influence of crystallisation and washing medium on the characterisation of nanocrystaline Y-T2P
AU - Sagel-Ransijn, C.D.
AU - Winnubst, A.J.A.
AU - Burggraaf, A.J.
AU - Verweij, H.
PY - 1996
Y1 - 1996
N2 - A zirconia-yttria gel, made by coprecipitation, was treated in six different ways to obtain a nanocrystalline Y-TZP powder: one large gel batch was split into six parts of which one was crystallized in air and the others crystallized either in water with a high pH or in methanol. The batches were subjected to several post treatments. Powder properties and densification characteristics of the six powder batches obtained in this way are described. The aircalcined powder can be sintered to a relative density of about 93% at 1070 °C/10 h, but reproducibility of the sintering characteristics is poor. Optimal hydrothermal treatment of the powder yields a reproducible sintering process, resulting in a relative density of 96% at 1070 °C/10 h and an average grain size between 120 and 130 nm.
AB - A zirconia-yttria gel, made by coprecipitation, was treated in six different ways to obtain a nanocrystalline Y-TZP powder: one large gel batch was split into six parts of which one was crystallized in air and the others crystallized either in water with a high pH or in methanol. The batches were subjected to several post treatments. Powder properties and densification characteristics of the six powder batches obtained in this way are described. The aircalcined powder can be sintered to a relative density of about 93% at 1070 °C/10 h, but reproducibility of the sintering characteristics is poor. Optimal hydrothermal treatment of the powder yields a reproducible sintering process, resulting in a relative density of 96% at 1070 °C/10 h and an average grain size between 120 and 130 nm.
U2 - 10.1016/0955-2219(95)00201-4
DO - 10.1016/0955-2219(95)00201-4
M3 - Article
SN - 0955-2219
VL - 16
SP - 759
EP - 766
JO - Journal of the European Ceramic Society
JF - Journal of the European Ceramic Society
IS - 7
ER -