입자 핵연료의 SiC/C 다층 도포층의 미세조직 및 극미세 경도 평가
Microstructure and Nano-hardness of SiC/C Multi-coated Layers on a Particulate Nuclear Fuel
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초록
Triso-type coating layers of silicon carbide and graphite on UO2 paticulate nuclear fuel were prepared by using fluidized bed type chemical vapor deposition method and self-propagating high temperature synthesis methods to make a coated nuclear fuel of a power plant for hydrogen mass-production. The source and carrier gases were the mixture of methyltrichlorosilane and propane, and inert argon. Chemical analysis and microstructure observation showed that the coated layers were inner graphite, middle silicon carbide and outer graphite. The elastic modulus and nano-hardness of the silicon carbide layer were 503 [GPa] and 36 [GPa], respectively.
Abstract
Triso-type coating layers of silicon carbide and graphite on UO2 paticulate nuclear fuel were prepared by using fluidized bed type chemical vapor deposition method and self-propagating high temperature synthesis methods to make a coated nuclear fuel of a power plant for hydrogen mass-production. The source and carrier gases were the mixture of methyltrichlorosilane and propane, and inert argon. Chemical analysis and microstructure observation showed that the coated layers were inner graphite, middle silicon carbide and outer graphite. The elastic modulus and nano-hardness of the silicon carbide layer were 503 [GPa] and 36 [GPa], respectively.
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