Sintering of zirconia-based nanomaterials studied by variable-energy slow-positron beam

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10288528" target="_blank" >RIV/00216208:11320/14:10288528 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1088/1742-6596/505/1/012020" target="_blank" >http://dx.doi.org/10.1088/1742-6596/505/1/012020</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1742-6596/505/1/012020" target="_blank" >10.1088/1742-6596/505/1/012020</a>

Result language
angličtina
Original language name
Sintering of zirconia-based nanomaterials studied by variable-energy slow-positron beam
Original language description
A variable-energy slow-positron beam was applied to the investigations of the tetragonal yttria-stabilised zirconia (YSZ), the YSZ co-doped with small amount of Cr2O3. The initial nanopowders exhibiting the mean particle size of approximate to 20 nm wereprepared by co-precipitation technique. Prior the sintering, the nanopowders were calcined and compacted using a pressure of 500 MPa. The ordinary shape parameters of the Doppler-broadened annihilation peak and the relative positronium 3 gamma-fractionswere determined as functions of positron energy. The results are consistent with a remarkable sintering-induced grain growth and disappearance of porosity which is driven out from the sample interior toward a thin subsurface layer.
Czech name
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Czech description
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Project
<a href="/en/project/GAP108%2F11%2F1396" target="_blank" >GAP108/11/1396: Effect of substitutional elements and grain boundaries on properties of nanocrystalline zirconia-based materials</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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