Publication detail

Two-Step Sintering and Spark Plasma Sintering of Al2O3, ZrO2 and SrTiO3 Ceramics

MACA, K. POUCHLÝ, V. SHEN, Z.

Czech title

Dvojstupňové a SPS slinování Al2O3, ZrO2 a SrTiO3 keramiky

English title

Two-Step Sintering and Spark Plasma Sintering of Al2O3, ZrO2 and SrTiO3 Ceramics

Type

journal article - other

Language

en

Original abstract

The influence of Two Step Sintering and Spark Plasma Sintering processes on the microstructure of three kinds of oxide ceramics was studied. Al2O3 (with initial particle size of 240 nm), ZrO2 (60 nm, stabilized with 3 mol%Y2O3) and SrTiO3 (50 nm) powders were cold isostatically pressed and pressureless sintered with different heating regimes. It was found that the method of TSS does not bring about significant reduction of final grain size in Al2O3 and ZrO2 ceramics, but does reduce the grain size in perovskite SrTiO3 ceramics. Pressureless sintering of SrTiO3 leads only to 95%TD dense ceramics with the minimum grain size of 400 nm. In comparison, by SPS, with an applied uniaxial pressure of 200MPa, SrTiO3 ceramic of 98%TD dense with grain size of 80 nm was prepared.

Czech abstract

Byl studován vliv dvojstupňového a SPS slinování na mikrostrukturu 3 typů oxidových keramik: Al2O3 (velikost částic 240 nm), ZrO2 (60 nm, stabilizován 3 mol%Y2O3) a SrTiO3 (50 nm). Dvojstupňové slinování nevedlo ke snížení velikosti zrn Al2O3 a ZrO2 keramiky, ale způsobilo významné snížení jejich velikosti u perovskitové SrTiO3 keramiky. Beztlaké slinováníf SrTiO3 vedlo ke keramice o hustotě pouze 95%TD a velikosti zrn 400nm. Na rozdíl od toho pomocí SPS při tlaku 200MPa byla přpravena SrTiO3 keramika o hustotě 98%TD a velikosti zrn 80nm.

English abstract

The influence of Two Step Sintering and Spark Plasma Sintering processes on the microstructure of three kinds of oxide ceramics was studied. Al2O3 (with initial particle size of 240 nm), ZrO2 (60 nm, stabilized with 3 mol%Y2O3) and SrTiO3 (50 nm) powders were cold isostatically pressed and pressureless sintered with different heating regimes. It was found that the method of TSS does not bring about significant reduction of final grain size in Al2O3 and ZrO2 ceramics, but does reduce the grain size in perovskite SrTiO3 ceramics. Pressureless sintering of SrTiO3 leads only to 95%TD dense ceramics with the minimum grain size of 400 nm. In comparison, by SPS, with an applied uniaxial pressure of 200MPa, SrTiO3 ceramic of 98%TD dense with grain size of 80 nm was prepared.

Keywords in Czech

Al2O3, ZrO2, SrTiO3, dvojstupňové slinování, spark plasma sintering, mikrostruktura

Keywords in English

Al2O3, ZrO2, SrTiO3, two step sintering, spark plasma sintering, microstructure

RIV year

2008

Released

01.01.2008

ISSN

1058-4587

Journal

INTEGRATED FERROELECTRICS

Volume

99

Number

1

Pages from–to

114–124

Pages count

11

BIBTEX


@article{BUT49013,
  author="Karel {Maca} and Václav {Pouchlý} and Zhijian {Shen},
  title="Two-Step Sintering and Spark Plasma Sintering of Al2O3, ZrO2 and SrTiO3 Ceramics",
  journal="INTEGRATED FERROELECTRICS",
  year="2008",
  volume="99",
  number="1",
  month="January",
  pages="114--124",
  issn="1058-4587"
}