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Journal of Advanced Ceramics 2018, 7(1): 64-71 https://doi.org/10.1007/s40145-017-0257-x
Research Article | Open Access | Issue | Published: 20 January 2018

Fabrication and microstructure of ZrB2–ZrC–SiC coatings on C/C composites by reactive melt infiltration using ZrSi2 alloy

Show Author's Information Chaoqiang XUEa,b,c,  Haijun ZHOUb,c,  Jianbao HUb,c,  Hongda WANGb,c,  Jiayue XUa,  Shaoming DONGb,c( )
School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 200235, China
Structural Ceramics and Composites Engineering Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
Keywords:
ultra-high temperature ceramics (UHTCs), coating, reactive melt infiltration (RMI), alloy
Cite this article:
XUE C, ZHOU H, HU J, et al. Fabrication and microstructure of ZrB2–ZrC–SiC coatings on C/C composites by reactive melt infiltration using ZrSi2 alloy. Journal of Advanced Ceramics, 2018, 7(1): 64-71. https://doi.org/10.1007/s40145-017-0257-x
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Abstract Full text About this article

ZrB2–ZrC–SiC ternary coatings on C/C composites are investigated by reactive melt infiltration of ZrSi2 alloy into pre-coatings. Two different pre-coating structures, including porous B4C–C and dense C/B, are designed by slurry dip and chemical vapor deposition (CVD) process respectively. The coating prepared by reactive melt infiltration (RMI) into B4C–C presents a flat and smooth surface with a three-layer cross-sectional structure, namely interior SiC transition layer, gradient ZrB2–ZrC–SiC layer, and ZrB2–ZrC exterior layer. In comparison, the coating prepared by RMI into C/B shows a more granular surface with a different three-layer cross-sectional structure, interior unreacted B–C pre-coating layer, middle SiC layer, and exterior ZrB2–ZrC–ZrSi2 layer. The forming mechanisms of the specific microstructures in two coatings are also investigated and discussed in detail.


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About this article

Fabrication and microstructure of ZrB2–ZrC–SiC coatings on C/C composites by reactive melt infiltration using ZrSi2 alloy

Show Author's information Chaoqiang XUEa,b,c, Haijun ZHOUb,c, Jianbao HUb,c, Hongda WANGb,c, Jiayue XUa, Shaoming DONGb,c( )
School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 200235, China
Structural Ceramics and Composites Engineering Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China

Abstract

ZrB2–ZrC–SiC ternary coatings on C/C composites are investigated by reactive melt infiltration of ZrSi2 alloy into pre-coatings. Two different pre-coating structures, including porous B4C–C and dense C/B, are designed by slurry dip and chemical vapor deposition (CVD) process respectively. The coating prepared by reactive melt infiltration (RMI) into B4C–C presents a flat and smooth surface with a three-layer cross-sectional structure, namely interior SiC transition layer, gradient ZrB2–ZrC–SiC layer, and ZrB2–ZrC exterior layer. In comparison, the coating prepared by RMI into C/B shows a more granular surface with a different three-layer cross-sectional structure, interior unreacted B–C pre-coating layer, middle SiC layer, and exterior ZrB2–ZrC–ZrSi2 layer. The forming mechanisms of the specific microstructures in two coatings are also investigated and discussed in detail.

Keywords: ultra-high temperature ceramics (UHTCs), coating, reactive melt infiltration (RMI), alloy

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Publication history

Received: 02 September 2017
Revised: 18 December 2017
Accepted: 25 December 2017
Published: 20 January 2018
Issue date: March 2018

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© The author(s) 2017

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Open Access The articles published in this journal are distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/ y/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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