Preparation and characterization of nanoscale Y-TZP powder by heterogeneous azeotropic distillation

Autor: Lian Gao, Chude Feng, Dong-Sheng Yan, Haibo Qiu, Jingkun Guo
Rok vydání: 1995
Předmět:
Zdroj: Journal of Materials Science. 30:5508-5513
ISSN: 1573-4803
0022-2461
DOI: 10.1007/bf00351566
Popis: A heterogeneous azeotropic distillation process was effectively used to dehydrate hydrous zirconia and therefore prevent the formation of hard agglomerates in the preparation of nanoscale zirconia powder. The mechanism of azeotropic distillation to prevent hard agglomerate from forming was studied by investigating the interaction of hydrous zirconia with n-butanol. The prepared powder was sintered to 99.5% of theoretical density by slow-sintering (average grain size of ∼200 nm), 97.5% by fast-sintering (average grain size of ∼120 nm) at 1250°C.
Databáze: OpenAIRE