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MICROSTRUCTURE OF PLASMA-SPRAYEDAl2O3–ZrO2COMPOSITE COATINGS

Author

Listed:
  • LUBIN CHEN

    (School of Materials Science and Engineering, Shandong University, Ji'nan 250061, P. R. China)

  • CHUANZHONG CHEN

    (School of Materials Science and Engineering, Shandong University, Ji'nan 250061, P. R. China)

  • LIANG ZHANG

    (School of Materials Science and Engineering, Shandong University, Ji'nan 250061, P. R. China)

  • BIAO QI

    (School of Materials Science and Engineering, Shandong University, Ji'nan 250061, P. R. China)

  • TING-QUAN LEI

    (School of Materials Science and Engineering, Shandong University, Ji'nan 250061, P. R. China;
    School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China)

Abstract

Thermal barrier coatings ofAl2O3–ZrO2were prepared by air plasma spraying on the surface of 20G steel. Phase constitution, microstructures and elemental distributions of the coatings were studied by X-ray diffraction, scanning electron microscope and electron probe X-ray microanalysis. The results show that the plasma spray coating mainly consists ofα-Al2O3,c-ZrO2, andt-ZrO2. The bond state of the interface between the top layer and bond layer is fine, and the bond layer has a good combination with the substrate.ZrO2andAl2O3structures can closely integrate together and form compact top layer system.

Suggested Citation

  • Lubin Chen & Chuanzhong Chen & Liang Zhang & Biao Qi & Ting-Quan Lei, 2006. "MICROSTRUCTURE OF PLASMA-SPRAYEDAl2O3–ZrO2COMPOSITE COATINGS," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 13(05), pages 545-549.
    • Handle: RePEc:wsi:srlxxx:v:13:y:2006:i:05:n:s0218625x06008475
    DOI: 10.1142/S0218625X06008475
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