Publication detail

Sintering of bulk zirconia nanoceramics

MACA, K. TRUNEC, M. DOBŠÁK, P. ŠVEJCAR, J.

Czech title

Slinování objemové ZrO2 keramiky

English title

Sintering of bulk zirconia nanoceramics

Type

journal article - other

Language

en

Original abstract

The sintering and the microstructure of zirconia ceramics prepared by cold isostatic pressing of nanoceramic powders were studied. Ceramic powders contained 0, 1.5 and 3 mol.% of yttria. It was found that higher compacting pressures (700 MPa) yielded green bodies with smaller pores, which showed in their better sinterability. After sintering at 1100C, the bodies had a density exceeding 90% t.d. and grains below 80 nm. A critical ratio of the pore size in green bodies to the particle size was established, which enables sintering zirconia nanopowders of some 10 nm in size at a temperature of 1100C.

Czech abstract

Bylo studováno slinování ZrO2 keramiky (dopované 1,5 a 3mol.% Y2O3) připravené izostatickým lisováním nanometrických prášků. Vyšší lisovací tlak (700MPa) vedl ke keramickým polotovarům s menší velikostí pórů, které lépe slinovaly než tělesa lisovaná nižším tlakem (300MPa). Po slinování při 1100C měla tělesa hustotu vyšší než 99%t.h. a zrna menší než 80nm.

English abstract

The sintering and the microstructure of zirconia ceramics prepared by cold isostatic pressing of nanoceramic powders were studied. Ceramic powders contained 0, 1.5 and 3 mol.% of yttria. It was found that higher compacting pressures (700 MPa) yielded green bodies with smaller pores, which showed in their better sinterability. After sintering at 1100C, the bodies had a density exceeding 90% t.d. and grains below 80 nm. A critical ratio of the pore size in green bodies to the particle size was established, which enables sintering zirconia nanopowders of some 10 nm in size at a temperature of 1100C.

Keywords in English

zirconia, nanoceramics, sintering

RIV year

2003

Released

01.01.2003

Publisher

Advanced Study Center Co. Ltd. (St.Petersburg, Russia)

ISSN

1606-5131

Journal

Reviews on Advanced Materials Science

Volume

5

Number

3

Pages count

4

BIBTEX


@article{BUT41502,
  author="Karel {Maca} and Martin {Trunec} and Petr {Dobšák} and Jiří {Švejcar},
  title="Sintering of bulk zirconia nanoceramics",
  journal="Reviews on Advanced Materials Science",
  year="2003",
  volume="5",
  number="3",
  month="January",
  publisher="Advanced Study Center Co. Ltd. (St.Petersburg, Russia)",
  issn="1606-5131"
}