High-temperature mechanical behavior of partially sintered ceramics
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F23%3A43926318" target="_blank" >RIV/60461373:22310/23:43926318 - isvavai.cz</a>
Result on the web
<a href="https://link.springer.com/article/10.1007/s10853-023-08382-x" target="_blank" >https://link.springer.com/article/10.1007/s10853-023-08382-x</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10853-023-08382-x" target="_blank" >10.1007/s10853-023-08382-x</a>
Alternative languages
Result language
angličtina
Original language name
High-temperature mechanical behavior of partially sintered ceramics
Original language description
The high-temperature mechanical behavior (elastic properties, fracture strength, and degree of irreversible deformation) of partially sintered alumina and zirconia ceramics with different porosities and degrees of sintering was evaluated by (static) three-point bending tests at 1100 °C, from which load–deflection curves were obtained. Furthermore, the elastic modulus obtained from these curves was compared to Young’s modulus as measured via the impulse excitation technique. Bar-shaped specimens were prepared by uniaxial pressing and sintering at 1100, 1200, 1300 and 1400 °C for 2 h, and subsequently characterized via bulk density measurements, total porosity calculations and electron scanning microscopy analysis. The effects caused by progressive sintering and the occurrence of irreversible deformation due to the weak bonds (small sinter necks) between particles affected the values of the static elastic modulus, which resulted in values quite lower than those obtained by the impulse excitation technique. A very good correlation described with a power-law relationship was obtained between both type of modulus, dynamic and static one, in the whole range of sintering temperatures for the two evaluated porous ceramics. In particular, the very fine (nanocrystalline) grain size and the tendency to agglomerate of the zirconia powder facilitated the irreversible deformation by grain boundary sliding.
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
2023
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 Materials Science
ISSN
0022-2461
e-ISSN
1573-4803
Volume of the periodical
58
Issue of the periodical within the volume
12
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
5208-5218
UT code for WoS article
000952928800002
EID of the result in the Scopus database
2-s2.0-85150210061