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Oxidation Behavior and Breakdown of an Aluminide Coating on DZ40M Alloy at High Temperatures

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Abstract

DZ40M alloy is a new Co-base superalloy, which is suitable for the blade material of gas turbines. In this paper, isothermal oxidation of an aluminide coating on this alloy was examined at 900–1100°C in air. It was observed that the weight gain at lower temperatures (900 and 1000°C) was greater than that at the higher temperature (1050°C), which was due to the formation of both θ-Al2O3 and α-Al2O3 at 900 and 1000°C but only α-Al2O3 at 1050 and 1100°C.

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Authors and Affiliations

  1. Key Laboratory of Beam Technology and Material Modification of Ministry of Education, and Institute of Low Energy Nuclear Physics, Beijing Normal University, Beijing, 100875, P.R. China

    P.S. Liu & H. Y. Zhou

  2. Department of Materials Science and Engineering, Tsinghua University, Beijing, 100084, P.R. China

    K. M. Liang

  3. Institute of Metal Research, Chinese Academy of Sciences, Shenyan, 110015, P.R. China

    H. R. Guan, X. F. Sun, T. Jin & K. N. Yang

Authors
  1. P.S. Liu
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  2. K. M. Liang
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  3. H. Y. Zhou
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  4. H. R. Guan
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  5. X. F. Sun
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  6. T. Jin
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  7. K. N. Yang
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Liu, P., Liang, K.M., Zhou, H.Y. et al. Oxidation Behavior and Breakdown of an Aluminide Coating on DZ40M Alloy at High Temperatures. Oxidation of Metals 55, 543–550 (2001). https://doi.org/10.1023/A:1010363916459

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  • DOI: https://doi.org/10.1023/A:1010363916459

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