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Thermal Shock Properties Of Yttria-Stabilized Zirconia Coatings Deposited Using Low-Energy Very Low Pressure Plasma Spraying

Author

Listed:
  • LIN ZHU

    (Laboratoire d′Etudes et de Recherches sur les Matériaux, les Procédés et les Surfaces, Université de Technologie de Belfort-Montbéliard, Site de Sévenans, 90010 Belfort Cedex, France;
    Materials Research Institute for Energy Equipments, China First Heavy Industries, 300457 Tianjin, P. R. China)

  • NANNAN ZHANG

    (Department of Materials Science and Engineering, Shenyang University of Technology, 110870, Shenyang, P. R. China)

  • RODOLPHE BOLOT

    (Laboratoire d′Etudes et de Recherches sur les Matériaux, les Procédés et les Surfaces, Université de Technologie de Belfort-Montbéliard, Site de Sévenans, 90010 Belfort Cedex, France)

  • HANLIN LIAO

    (Laboratoire d′Etudes et de Recherches sur les Matériaux, les Procédés et les Surfaces, Université de Technologie de Belfort-Montbéliard, Site de Sévenans, 90010 Belfort Cedex, France)

  • CHRISTIAN CODDET

    (Laboratoire d′Etudes et de Recherches sur les Matériaux, les Procédés et les Surfaces, Université de Technologie de Belfort-Montbéliard, Site de Sévenans, 90010 Belfort Cedex, France)

Abstract

Yttria-stabilized zirconia (YSZ) coatings have been frequently used as a thermal protective layer on the metal or alloy component surfaces. In the present study,ZrO2-7%Y2O3thermal barrier coatings (TBCs) were successfully deposited by DC (direct current) plasma spray process under very low pressure conditions (less than 1 mbar) using low-energy plasma guns F4-VB and F100. The experiments were performed to evaluate the thermal shock resistance of different TBC specimens which were heated to 1373 K at a high-temperature cycling furnace and held for 0.5 h, followed by air cooling at room temperature for 0.2 h. For comparison, a corresponding atmospheric plasma spray (APS) counterpart was also elaborated to carry out the similar experiments. The results indicated that the very low pressure plasma spray (VLPPS) coatings displayed better thermal shock resistance. Moreover, the failure mechanism of the coatings was elucidated.

Suggested Citation

  • Lin Zhu & Nannan Zhang & Rodolphe Bolot & Hanlin Liao & Christian Coddet, 2015. "Thermal Shock Properties Of Yttria-Stabilized Zirconia Coatings Deposited Using Low-Energy Very Low Pressure Plasma Spraying," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 22(05), pages 1-11.
    • Handle: RePEc:wsi:srlxxx:v:22:y:2015:i:05:n:s0218625x15500614
    DOI: 10.1142/S0218625X15500614
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