Bio-inspired damage-tolerant alumina-based layered ceramics through rapid sintering
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F26%3A0198244" target="_blank" >RIV/00216305:26620/26:0198244 - isvavai.cz</a>
Result on the web
<a href="https://ceramics.onlinelibrary.wiley.com/doi/10.1111/jace.20706" target="_blank" >https://ceramics.onlinelibrary.wiley.com/doi/10.1111/jace.20706</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1111/jace.20706" target="_blank" >10.1111/jace.20706</a>
Alternative languages
Result language
angličtina
Original language name
Bio-inspired damage-tolerant alumina-based layered ceramics through rapid sintering
Original language description
Layered ceramics have proved effective under contact damage or thermal shock, associated with the effect of compressive residual stresses and/or textured microstructure against surface crack propagation. In addition, the use of nonconventional sintering techniques, including rapid sintering, has demonstrated the feasibility of tailoring the size and/or shape of grains in bulk alumina materials. In this study, we explore the feasibility of rapid sintering alumina-based layered ceramics to enhance their damage tolerance, combining in-plane residual stresses and tailored microstructures in the different layers. Templated alumina layers embedded within a fine-grained alumina matrix are sintered using a pressureless spark plasma sintering (SPS) setup. The microstructure evolution of the individual layer regions is investigated under different sintering conditions. An optimal combination of highly textured internal layers with sharp interfaces and fine-grained alumina is found for heating rates of 100 degrees C min-1, maximum sintering temperature of 1600 degrees C, and 30 min dwell time. Hertzian contact and thermal shock experiments performed in selected rapid sintered samples show crack arrest and crack deflection in the textured layers, as found in conventionally sintered bio-inspired alumina ceramics. The successful rapid sintering of alumina-based multi-materials opens the path for further improvement in terms of reliability and damage tolerance in ceramic components.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20504 - Ceramics
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of the American Ceramic Society
ISSN
0002-7820
e-ISSN
1551-2916
Volume of the periodical
2
Issue of the periodical within the volume
28.5.2025
Country of publishing house
US - UNITED STATES
Number of pages
15
Pages from-to
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UT code for WoS article
001498042600001
EID of the result in the Scopus database
2-s2.0-105007037646