Publication detail
Sintering kinetics of zirconia nanoparticle compacts
MACA, K. TRUNEC, M.
Czech title
Kinetika slinování ZrO2 nanokeramiky
English title
Sintering kinetics of zirconia nanoparticle compacts
Type
conference paper
Language
en
Original abstract
Sintering kinetics of yttria-stabilized zirconia nanoceramics was studied by means of high-temperature dilatometry and mercury intrusion porosimetry. Green bodies were prepared by cold isostatic pressing of zirconia nanopowders with particle size 10 nm. Pressureless sintering of these bodies at 1100C resulted in the final relative density of 99% of theoretical density, and a grain size of ca. 80 nm. The influence of particle size and of pore size distribution of powder compacts on sintering behaviour was also discussed. The sintering temperature and sintering activation energy of nanoceramics was lower than that of conventional submicrometre-sized zirconia ceramics.
Czech abstract
Kinetika slinování ZrO2 (stabilizované Y2O3) nanokeramiky byla studována pomocí vysokoteplotní dilatometrie a rtuťové porozimetrie. Tělesa byla připravena izostatickým lisováním nanoprášků o velikosti částic 10nm. Tělesa dosáhla po beztlakém slinování při teplotě 1100C relativní hustoty vyšší než 99% a velikosti zrn asi 80nm. Slinovací teplota i aktivační energie nanokeramiky byla nižší než u konvenkční keramiky.
English abstract
Sintering kinetics of yttria-stabilized zirconia nanoceramics was studied by means of high-temperature dilatometry and mercury intrusion porosimetry. Green bodies were prepared by cold isostatic pressing of zirconia nanopowders with particle size 10 nm. Pressureless sintering of these bodies at 1100C resulted in the final relative density of 99% of theoretical density, and a grain size of ca. 80 nm. The influence of particle size and of pore size distribution of powder compacts on sintering behaviour was also discussed. The sintering temperature and sintering activation energy of nanoceramics was lower than that of conventional submicrometre-sized zirconia ceramics.
Keywords in English
sintering kinetics, zirconia, nanoceramics
RIV year
2005
Released
01.01.2005
Publisher
INP Grenoble
Location
Grenoble
Book
Sintering 95
Pages from–to
29–32
Pages count
4
BIBTEX
@inproceedings{BUT18386,
author="Karel {Maca} and Martin {Trunec},
title="Sintering kinetics of zirconia nanoparticle compacts",
booktitle="Sintering 95",
year="2005",
month="January",
pages="29--32",
publisher="INP Grenoble",
address="Grenoble"
}