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Suspensions Plasma Spraying of Ceramics with Hybrid Water-Stabilized Plasma Technology
- 1.0474249 - ÚFP 2018 RIV US eng J - Článek v odborném periodiku
Mušálek, Radek - Medřický, Jan - Tesař, T. - Kotlan, Jiří - Pala, Zdeněk - Lukáč, František - Chráska, Tomáš - Curry, N.
Suspensions Plasma Spraying of Ceramics with Hybrid Water-Stabilized Plasma Technology.
Journal of Thermal Spray Technology. Roč. 26, 1-2 (2017), s. 37-46. ISSN 1059-9630. E-ISSN 1544-1016.
[ISTC 2016: International Thermal Spray Conference. Shanghai, 10.05.2016-12.05.2016]
Grant CEP: GA ČR GA15-12145S
Institucionální podpora: RVO:61389021
Klíčová slova: alumina * ceramics * dense * hybrid plasma torch * suspension plasma spraying * water-stabilized plasma * yttria-stabilized zirconia (YSZ)
Obor OECD: Coating and films
Impakt faktor: 1.949, rok: 2017
http://link.springer.com/article/10.1007/s11666-016-0493-6
Technology of water-stabilized plasma torch was recently substantially updated through introduction of a so-called hybrid concept that combines benefits of water stabilization and gas stabilization principles. The high-enthalpy plasma provided by the WSP-H (“hybrid”) torch may be used for thermal spraying of powders as well as liquid feedstocks with high feed rates. In this study, results from three selected experiments with suspension plasma spraying with WSP-H technology are presented. Possibility of deposition of coatings with controlled microstructures was demonstrated for three different ceramics (YSZ—yttria-stabilized zirconia, YAG—yttrium aluminum garnet and Al2O3) introduced into ethanol-based suspensions. Shadowgraphy was used for optimization of suspension injection and visualization of the liquid fragmentation in the plasma jet. Coatings were deposited onto substrates attached to the rotating carousel with integrated temperature monitoring and air cooling, which provided an excellent reproducibility of the deposition process. Deposition of columnar-like YSZ and dense YAG and Al2O3 coatings was successfully achieved. Deposition efficiency reached more than 50%, as evaluated according to EN ISO 17 836 standard.
Trvalý link: http://hdl.handle.net/11104/0271371
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