Microstructure and mechanical properties of chemical vapor deposited ZrC film on SiC/graphite substrate

Jun Gyu Kim, Doo Jin Choi, Do Kyung Kim, Young Woo Lee, Ji Yeon Park

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Both ZrC and SiC layers are crucial layers in TRISO coated fuel particles since they prevent diffusion of fission products and provide mechanical strength for the fuel particle. However, each layer has its own defects, so the purpose of this study is to determine such defects in these layers. In this study, we carried out thermodynamic simulations before actual experiments. With these simulation results, we deposited the ZrC layers on SiC/graphite substrates through a CVD process. SiC films on graphite have different microstructures which are a hemispherical angular, domed top and faceted structure at different deposition temperatures. According to the microstructures of SiC, the preferred orientation, hardness and elastic modulus of deposited ZrC layers are changed. New combinations of coated ZrC/SiC/graphite were made to improve mechanical properties and chemical properties for the purpose of fabricating TRISO coated fuel particle with high stability.

Original languageEnglish
Pages (from-to)21-24
Number of pages4
JournalJournal of Ceramic Processing Research
Volume10
Issue number1
Publication statusPublished - 2009 Apr 7

Fingerprint

Graphite
Coated fuel particles
Vapors
Mechanical properties
Microstructure
Substrates
Defects
Fission products
Chemical properties
Strength of materials
Chemical vapor deposition
Elastic moduli
Hardness
Thermodynamics
Experiments
Temperature

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites

Cite this

Kim, Jun Gyu ; Choi, Doo Jin ; Kim, Do Kyung ; Lee, Young Woo ; Park, Ji Yeon. / Microstructure and mechanical properties of chemical vapor deposited ZrC film on SiC/graphite substrate. In: Journal of Ceramic Processing Research. 2009 ; Vol. 10, No. 1. pp. 21-24.
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Microstructure and mechanical properties of chemical vapor deposited ZrC film on SiC/graphite substrate. / Kim, Jun Gyu; Choi, Doo Jin; Kim, Do Kyung; Lee, Young Woo; Park, Ji Yeon.

In: Journal of Ceramic Processing Research, Vol. 10, No. 1, 07.04.2009, p. 21-24.

Research output: Contribution to journalArticle

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AB - Both ZrC and SiC layers are crucial layers in TRISO coated fuel particles since they prevent diffusion of fission products and provide mechanical strength for the fuel particle. However, each layer has its own defects, so the purpose of this study is to determine such defects in these layers. In this study, we carried out thermodynamic simulations before actual experiments. With these simulation results, we deposited the ZrC layers on SiC/graphite substrates through a CVD process. SiC films on graphite have different microstructures which are a hemispherical angular, domed top and faceted structure at different deposition temperatures. According to the microstructures of SiC, the preferred orientation, hardness and elastic modulus of deposited ZrC layers are changed. New combinations of coated ZrC/SiC/graphite were made to improve mechanical properties and chemical properties for the purpose of fabricating TRISO coated fuel particle with high stability.

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