Positron Annihilation Study of Zirconia Nanopowders and Nanoceramics Stabilized by Magnesia and Ceria
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10288516" target="_blank" >RIV/00216208:11320/14:10288516 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1111/jace.12716" target="_blank" >http://dx.doi.org/10.1111/jace.12716</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1111/jace.12716" target="_blank" >10.1111/jace.12716</a>
Alternative languages
Result language
angličtina
Original language name
Positron Annihilation Study of Zirconia Nanopowders and Nanoceramics Stabilized by Magnesia and Ceria
Original language description
Positron lifetime (LT) and coincidence Doppler broadening (CDB) measurements on nanopowders and ceramics of ceria- and magnesia-stabilized zirconia (CeSZ and MgSZ, respectively) are presented. The nanopowders were prepared by the coprecipitation technique. Effects of nanopowder calcination and sintering at various temperatures were investigated. In the nanopowders, the two kinds of open-volume defects associated with grain boundaries (GBs) could be identified via positron trapping: (i) vacancy-like misfit defects situated along GBs and (ii) larger defects at the intersections of at least three GBs (triple points). CDB measurements on CeSZ compacted nanopowders indicated a segregation of Ce ions along GBs. A few percent fractions of positrons were foundto form positronium localized in pores of approximate to 1.8nm diameter in compacted nanopowders. Sintering of nanopowders at 1500 degrees C appeared to be sufficient for disappearance of pores and triple point defects. In sintered ceram
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2014
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
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Volume of the periodical
97
Issue of the periodical within the volume
3
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
982-989
UT code for WoS article
000332195700048
EID of the result in the Scopus database
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