Publication detail

On the determination of the stress-free temperature for alumina-zirconia multilayer structures

CHLUP, Z. HADRABA, H. DRDLÍK, D. MACA, K. DLOUHÝ, I. BERMEJO, R.

Original Title

On the determination of the stress-free temperature for alumina-zirconia multilayer structures

English Title

On the determination of the stress-free temperature for alumina-zirconia multilayer structures

Type

journal article in Web of Science

Language

en

Original Abstract

Internal residual stresses can enhance the fracture resistance and mechanical reliability of layered ceramics. The magnitude of the stresses depends on the elastic and thermal properties of the layers and the typically assumed reference (stress-free) temperature, below which internal stresses develop. A novel combined experimental and numerical simulation approach has been developed to determine the reference temperature and experimentally proved in alumina–zirconia ceramic laminates. Dilatometric data of monolithic phases are in put for the numerical simulation and experimental data on the laminate properties are used for the stress-free temperature determination. In contrast to typical assumptions, reference temperature very near the sintering temperature (i.e.approx. Tref=1470C) was found, which should be considered for the estimation of internal (residual) stresses in alumina/zirconia-based layered ceramics.

English abstract

Internal residual stresses can enhance the fracture resistance and mechanical reliability of layered ceramics. The magnitude of the stresses depends on the elastic and thermal properties of the layers and the typically assumed reference (stress-free) temperature, below which internal stresses develop. A novel combined experimental and numerical simulation approach has been developed to determine the reference temperature and experimentally proved in alumina–zirconia ceramic laminates. Dilatometric data of monolithic phases are in put for the numerical simulation and experimental data on the laminate properties are used for the stress-free temperature determination. In contrast to typical assumptions, reference temperature very near the sintering temperature (i.e.approx. Tref=1470C) was found, which should be considered for the estimation of internal (residual) stresses in alumina/zirconia-based layered ceramics.

Keywords

Sintering; Thermal expansion; Zirconia; Alumina; Layered ceramics

RIV year

2014

Released

01.05.2014

ISBN

0272-8842

Periodical

Ceramics International

Year of study

2014 (40)

Number

4

State

GB

Pages from

5787

Pages to

5793

Pages count

7

Documents

BibTex


@article{BUT105765,
  author="Zdeněk {Chlup} and Hynek {Hadraba} and Daniel {Drdlík} and Karel {Maca} and Ivo {Dlouhý} and Raul {Bermejo}",
  title="On the determination of the stress-free temperature for alumina-zirconia multilayer structures",
  annote="Internal residual stresses can enhance the fracture resistance and mechanical reliability of layered ceramics. The magnitude of the stresses depends on the elastic and thermal properties of the layers and the typically assumed reference (stress-free) temperature, below which internal stresses develop. A novel combined experimental and numerical simulation approach has been developed to determine the reference temperature and experimentally proved in alumina–zirconia ceramic laminates. Dilatometric data of monolithic phases are in put for the numerical simulation and experimental data on the laminate properties are used for the stress-free temperature determination. In contrast to typical assumptions, reference temperature very near the sintering temperature (i.e.approx. Tref=1470C) was found, which should be considered for the estimation of internal (residual) stresses in alumina/zirconia-based layered ceramics.",
  chapter="105765",
  doi="10.1016/j.ceramint.2013.11.018",
  number="4",
  volume="2014 (40)",
  year="2014",
  month="may",
  pages="5787--5793",
  type="journal article in Web of Science"
}