Dielectric and electrochemical properties through-thickness mapping on extremely thick plasma sprayed TiO2

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F16%3A00459787" target="_blank" >RIV/61389021:_____/16:00459787 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21230/16:00240005
Result on the web
<a href="http://dx.doi.org/10.1016/j.ceramint.2016.01.108" target="_blank" >http://dx.doi.org/10.1016/j.ceramint.2016.01.108</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ceramint.2016.01.108" target="_blank" >10.1016/j.ceramint.2016.01.108</a>

Result language
angličtina
Original language name
Dielectric and electrochemical properties through-thickness mapping on extremely thick plasma sprayed TiO2
Original language description
An extremely thick TiO2 deposit was plasma sprayed using a water-stabilized spray system. Natural rutile TiO2 was used as feedstock powder. Reaching the required enormous thickness, 15 mm, was fast thanks to a high feed-rate WSP gun. The massive deposits were cut into slices aligned parallel with the substrate and studied. Their microstructure is lamellar with defects typical for plasma sprayed ceramics. Differences between the near-substrate slices, medium space slices and near-surface slices of the deposit were found namely in physical properties. Besides the microstructure, dielectric spectroscopy and electrochemical impedance spectroscopy were in the focus of investigation. The role of the grain interior and grain boundaries in the charge transport and the role of dipoles of various sizes are different near the substrate, in the middle and near the surface. The deposit was annealed to remove the oxygen sub-stoichiometry of the semiconductive as-sprayed titania. Various differences are present also in the annealed deposit since they are inherited from the as-sprayed state, which was not completely overlaid by annealing.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JH - Ceramics, fire-proof materials and glass
OECD FORD branch
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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