Publication detail

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

MACA, K. POUCHLÝ, V. SHEN, Z.

Original Title

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

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.

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

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

RIV year

2008

Released

01.01.2008

ISBN

1058-4587

Periodical

INTEGRATED FERROELECTRICS

Year of study

99

Number

1

State

GB

Pages from

114

Pages to

124

Pages count

11

Documents

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",
  annote="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.",
  chapter="49013",
  journal="INTEGRATED FERROELECTRICS",
  number="1",
  volume="99",
  year="2008",
  month="january",
  pages="114--124",
  type="journal article - other"
}