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J. Korean Ceram. Soc. > Volume 57(3); 2020 > Article
Journal of the Korean Ceramic Society 2020;57(3): 246-270.
doi: https://doi.org/10.1007/s43207-020-00021-4
A review on the joining of SiC for high‑temperature applications
Dang‑Hyok Yoon1 , Ivar E. Reimanis2
1School of Materials Science and Engineering, Yeungnam University, Gyeongsan 38541, Korea
2Metallurgical and Materials Engineering Department, Colorado Center for Advanced Ceramics, Colorado School of Mines, Golden, CO 80401, USA
Correspondence  Dang‑Hyok Yoon ,Email: dhyoon@ynu.ac.kr
Received: December 3, 2019; Revised: December 27, 2019   Accepted: December 27, 2019.  Published online: March 31, 2020.
ABSTRACT
A review on the joining of SiC is given in response to the interest surge on this material for a number of applications. Because the engineering design for the majority of applications requires complicated shapes, there has been a strong demand for the development of reliable joining techniques for SiC, especially for high-temperature applications. However, the joining of SiC-based materials is inherently difficult because of the high degree of covalent bonding in SiC and the low self-diffusivity. This review discusses basic mechanisms and properties of the SiC joining techniques developed to date; they are divided into eight different categories. In addition, critical assessment is given for each technique in the context of high-temperature application (≥ 1000 °C). Finally, comments are provided for the use of these techniques in advanced nuclear reactors where stringent irradiation stability under neutron irradiation as well as hermeticity and joint strength are required.
Key words: SiC · Joining · High-temperature applications · Interfaces · Nuclear reactors
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