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Journal of Materials Engineering and Performance

, Volume 28, Issue 1, pp 512–518 | Cite as

ZrB2-SiC-Ta4HfC5/Ta4HfC5 Oxidation-Resistant Dual-Layer Coating Fabricated by Spark Plasma Sintering for C/C Composites

  • Changling Zhou
  • Yushi QiEmail author
  • Yehong Cheng
  • Wenbo Han
Article
  • 37 Downloads

Abstract

In this work, a ZrB2-SiC-Ta4HfC5/Ta4HfC5 oxidation-resistant dual-layer coating was fabricated to improve the oxidation resistance of carbon–carbon (C/C) composites. The coating was prepared by pack cementation combined with the slurry paste method. Spark plasma sintering was used in the procedure. The as-prepared dual-layer coating was approximately 110 μm, and no distinct interface was observed between the coating and the matrix. The isothermal oxidation test results showed that the dual coating effectively prevented C/C composites from oxidizing. The weight loss of the coated samples was only 3.3 and 9.5% after oxidation at 1773 K for 20 h and ten thermal shock cycles between 1773 K and room temperature in air, respectively. The pores and microcracks were the main reason for the failure of the coating.

Keywords

dual-layer coating oxidation resistance spark plasma sintering ZrB2-SiC-Ta4HfC5 

Notes

Acknowledgments

This work is supported by the National Natural Science Foundation of China under Grant Nos. 11572105 and 51772061, the National Fund for Distinguished Young Scholars (No. 51525201), the Foundation for Innovative Research Groups of the National Natural Science Foundation of China (No. 11421091), the Major State Basic Search Program (No. 2014CB46505).

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Copyright information

© ASM International 2018

Authors and Affiliations

  • Changling Zhou
    • 1
  • Yushi Qi
    • 2
    Email author
  • Yehong Cheng
    • 1
  • Wenbo Han
    • 1
  1. 1.National Key Laboratory of Science and Technology on Advanced Composites in Special EnvironmentsHarbin Institute of TechnologyHarbinPeople’s Republic of China
  2. 2.School of Materials Science and EngineeringHarbin Institute of TechnologyHarbinPeople’s Republic of China

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