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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

  • Czech description

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

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

  • 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