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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
Type
journal article in Web of Science
Language
English
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.
Keywords
Sintering; Thermal expansion; Zirconia; Alumina; Layered ceramics
Authors
CHLUP, Z.; HADRABA, H.; DRDLÍK, D.; MACA, K.; DLOUHÝ, I.; BERMEJO, R.
RIV year
2014
Released
1. 5. 2014
ISBN
0272-8842
Periodical
Ceramics International
Year of study
2014 (40)
Number
4
State
United Kingdom of Great Britain and Northern Ireland
Pages from
5787
Pages to
5793
Pages count
7
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", journal="Ceramics International", year="2014", volume="2014 (40)", number="4", pages="5787--5793", doi="10.1016/j.ceramint.2013.11.018", issn="0272-8842" }