Počet záznamů: 1
Optimizing Thermoelectric Properties of In Situ Plasma-Spray-Synthesized Sub-stoichiometric TiO2-x Deposits
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SYSNO ASEP 0507465 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Optimizing Thermoelectric Properties of In Situ Plasma-Spray-Synthesized Sub-stoichiometric TiO2-x Deposits Tvůrce(i) Lee, H. (US)
Seshadri, R. (US)
Pala, Zdeněk (UFP-V) RID
Sampath, S. (US)Celkový počet autorů 4 Zdroj.dok. Journal of Thermal Spray Technology. - : Springer - ISSN 1059-9630
Roč. 27, č. 6 (2018), s. 968-982Poč.str. 15 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova stabilized zirconia coatings ; thermal-conductivity ; microstructure ; phase ; performance ; nanofluids ; metastable phases ; plasma spray ; thermal spray ; thermoelectric properties ; TiO2-x ; titanium oxides Vědní obor RIV JG - Hutnictví, kovové materiály Obor OECD Materials engineering CEP GB14-36566G GA ČR - Grantová agentura ČR Způsob publikování Omezený přístup Institucionální podpora UFP-V - RVO:61389021 UT WOS 000441984900006 DOI 10.1007/s11666-018-0731-1 Anotace In this article, an attempt has been made to relate the thermoelectric properties of thermal spray deposits of sub-stoichiometric titania to process-induced phase and microstructural variances. The TiO2-x deposits were formed through the in situ reaction of the TiO1.9 or TiO1.7 feedstock within the high-temperature plasma flame and manipulated via varying the amounts of hydrogen fed into in the thermal plasma. Changes in the flow rates of H-2 in the plasma plume greatly affected the in-flight particle behavior and composition of the deposits. For reference, a high-velocity oxy-fuel spray torch was also used to deposit the two varieties of feedstocks. Refinements to the representation of the in-flight particle characteristics derived via single particle and ensemble diagnostic methods are proposed using the group parameters (melting index and kinetic energy). The results show that depending on the value of the melting index, there is an inverse proportional relationship between electrical conductivity and Seebeck coefficient, whereas thermal conductivity has a directly proportional relationship with the electrical conductivity. Retention of the original phase and reduced decomposition is beneficial to retain the high Seebeck coefficient or the high electrical conductivity in the TiO2 system. Pracoviště Ústav fyziky plazmatu Kontakt Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Rok sběru 2020 Elektronická adresa https://link.springer.com/article/10.1007%2Fs11666-018-0731-1
Počet záznamů: 1