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Original title:
Influence of isothermal exposure on microstructural changes resulting in delamination of eutectic Al2O3+ZrO2+SiO2 thermal barrier coatings
Authors: Jech, D. ; Čelko, L. ; Chráska, Tomáš ; Slámečka, K. ; Klakurková, L. ; Dubský, Jiří ; Švejcar, J.
Document type: Papers
Conference/Event: Metal 2014. International Conference on Metallurgy and Materials /23./, Brno (CZ), 2014-05-21 / 2014-05-23
Year: 2014
Language: eng
Abstract: Eutectic ceramic Al2O3-ZrO2-SiO2 also termed Eucor (as a top coat) and CoNiCrAlY (as a bond coat) coatings were sprayed onto the surface of recently developed fine-grained cast polycrystalline nickel-based superalloy Inconel 713 LC by means of water stabilized plasma (WSP) and atmospheric plasma spraying (APS) techniques, respectively.Specimens were subjected to isothermal oxidation at 1050 °C for 10, 50, 100, 200 and 500 hours in ambient atmosphere,prior to which a half of the as-sprayed specimens was annealed at the temperature of 950 °C for 10 hours.Influence of short-time and long-time isothermal exposure on interactions at the bond-coat/top-coat interface was studied.The uniform and continuous oxide layer,also termed the thermally grown oxide (TGO),was formed and grew at the bond-coat/top-coat interface in all samples, both with and without the heat pre-treatment. Relationship between the dwell time, heat treatment and TGO growth kinetics was quantified.Microstructural changes
Keywords: Electron microscopy-scanning; Heat treatment; Image analysis; Thermal barrier coatings; Thermal plasma spraying
Host item entry: METAL 2014: 23RD INTERNATIONAL CONFERENCE ON METALLURGY AND MATERIALS, ISBN 978-80-87294-54-3
Institution: Institute of Plasma Physics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0256634
Permalink: http://www.nusl.cz/ntk/nusl-202377
The record appears in these collections:
Research > Institutes ASCR > Institute of Plasma Physics
Conference materials > Papers
Authors: Jech, D. ; Čelko, L. ; Chráska, Tomáš ; Slámečka, K. ; Klakurková, L. ; Dubský, Jiří ; Švejcar, J.
Document type: Papers
Conference/Event: Metal 2014. International Conference on Metallurgy and Materials /23./, Brno (CZ), 2014-05-21 / 2014-05-23
Year: 2014
Language: eng
Abstract: Eutectic ceramic Al2O3-ZrO2-SiO2 also termed Eucor (as a top coat) and CoNiCrAlY (as a bond coat) coatings were sprayed onto the surface of recently developed fine-grained cast polycrystalline nickel-based superalloy Inconel 713 LC by means of water stabilized plasma (WSP) and atmospheric plasma spraying (APS) techniques, respectively.Specimens were subjected to isothermal oxidation at 1050 °C for 10, 50, 100, 200 and 500 hours in ambient atmosphere,prior to which a half of the as-sprayed specimens was annealed at the temperature of 950 °C for 10 hours.Influence of short-time and long-time isothermal exposure on interactions at the bond-coat/top-coat interface was studied.The uniform and continuous oxide layer,also termed the thermally grown oxide (TGO),was formed and grew at the bond-coat/top-coat interface in all samples, both with and without the heat pre-treatment. Relationship between the dwell time, heat treatment and TGO growth kinetics was quantified.Microstructural changes
Keywords: Electron microscopy-scanning; Heat treatment; Image analysis; Thermal barrier coatings; Thermal plasma spraying
Host item entry: METAL 2014: 23RD INTERNATIONAL CONFERENCE ON METALLURGY AND MATERIALS, ISBN 978-80-87294-54-3
Institution: Institute of Plasma Physics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0256634
Permalink: http://www.nusl.cz/ntk/nusl-202377
The record appears in these collections:
Research > Institutes ASCR > Institute of Plasma Physics
Conference materials > Papers
Record created 2016-02-08, last modified 2021-11-24