Top-surface characterization of La2Zr2O7 + 8YSZ thermal barrier coatings under condition of hot corrosion in liquid Na2SO4 + V2O5 deposits

• Autorzy: Malurdy Tomasz , Mocek Mirosław , Jasik Anna , Moskal Grzegorz

Identyfikatory

DOI

10.15199/40.2021.6.1

Warianty tytułu

PL

Charakterystyka powierzchni powłok TBC typu La2Zr2O7 + 8YSZ w warunkach korozji wysokotemperaturowej w środowisku ciekłych osadów solnych Na2SO4 + V2O5

• Języki publikacji: PL

Abstrakty

PL

W artykule dokonano charakterystyki warstwy wierzchniej powłokowych barier cieplnych typu dwuwarstwowego La2Zr2O7/8YSZ w warunkach korozji wysokotemperaturowej w środowisku ciekłych osadów soli siarczanowych oraz tlenku wanadu. Bazowym układem powłokowym użytym w badaniach jest powłoka otrzymana metodą natrysku plazmowego z proszków wyjściowych typu La2Zr2O7 i 8YSZ na podłożu z nadstopu niklu AMS 5599 z międzywarstwą typu NiCrAlY. Test korozji wysokotemperaturowej wykonano w temperaturze 920°C w dwóch wariantach środowiskowych: 95 % mas. Na2SO4 – 5 % mas. V2O5 i 50 % mas. Na2SO4 – 50 % mas. V2O5. Czas wytrzymania w srodowisku o mniejszej zawartości tlenku wanadu wynosił 57 godzin, natomiast w środowisku o większej zawartości wanadu - 4h. Zakres badań obejmował charakterystykę powierzchni po badaniach korozyjnych ze szczególnym uwzględnieniem opisu produktów korozji, co określono metodą dyfrakcji rentgenowskiej (XRD), oraz ocenę składu chemicznego produktów korozji metodami SEM/EDS.

EN

Characterization of double ceramic layered thermal barrier coating (DCL TBC) top-surface of La2Zr2O7/8YSZ type under condition of hot corrosion in liquid deposits of sodium sulphate and vanadium oxides was described in this article. The base system used in investigations was deposited by atmospheric plasma spraying (APS) form feedstock powders of La2Zr2O7 and 8YSZ type on coupons from AMS 5599 Ni-based superalloys with NiCrAlY bond-coat. The hot corrosion test was performed at temperature 920°C in two different variants of environment: 95 wt % Na2SO4 – wt 5 % V2O5 and 50 wt % Na2SO4 – 50 wt % V2O5. The time of exposure in low-vanadia environment was 57 hours and 4 hours in high-vanadia deposits. The range of investigations included characterization of top-surface of TBC system after test end with special attention to characterization of corrosion products determined by X-Ray diffraction method (XRD), as well as the characterization of chemical constituent of generated products by SEM/EDS analysis.

Słowa kluczowe

PL

DCL TBC; La2Zr2O7/8YSZ; korozja wysokotemperaturowa; V2O5; degradacja

EN

DCL TBC; La2Zr2O7/8YSZ; hot corrosion; V2O5; degradation

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Ochrona przed Korozją
• Rocznik: 2021
• Tom: nr 6
• Strony: 170--176
• Opis fizyczny: Bibliogr. 21 poz., rys., tab., wykr.

Twórcy

autor

Malurdy Tomasz

• Polska Grupa Górnicza S.A., 40-039 Katowice, Powstańców 30, Poland

autor

Mocek Mirosław

• Department of Advanced Materials and Technologies, PhD School, Silesian University of Technology, Akademicka 2a, 44-100 Gliwice, Poland

autor

Jasik Anna

• The Silesian University of Technology, Faculty of Materials Engineering, Department of Advanced Materials and Technologies, 40-019 Katowice, Krasińskiego 8, Poland

• https://orcid.org/0000-0001-7413-486X

autor

Moskal Grzegorz

• The Silesian University of Technology, Faculty of Materials Engineering, Department of Advanced Materials and Technologies, 40-019 Katowice, Krasińskiego 8, Poland
• The Silesian University of Technology, Materials Design and Manufacturing Laboratory, 40-019 Katowice, Krasińskiego 8, Poland

• https://orcid.org/0000-0001-7396-6568

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).