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Title
Japanese: 
English:Compatibility of dip-coated Er2O3 coating by MOD method with liquid Li 
Author
Japanese: 20. Dongxun ZHANG, 近藤 正聡, 田中 照也, 室賀 健夫, Valentyn TSISAR.  
English: 20. Dongxun ZHANG, Masatoshi KONDO, Teruya TANAKA, Takeo MUROGA, Valentyn TSISAR.  
Language English 
Journal/Book name
Japanese: 
English:Fusion Engineering and Design 
Volume, Number, Page Vol. 86        pp. 2508-2511
Published date Apr. 13, 2011 
Publisher
Japanese: 
English:Elsevier 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
DOI https://doi.org/10.1016/j.fusengdes.2011.03.036
Abstract An electrical insulating ceramic coating on the self-cooled lithium blanket is a promising technology for suppressing MHD pressure drop in the blanket system. Er2O3is thought to be one of the potential candidate materials for ceramic coatings because of their high electrical resistivity and high compatibility with liquid lithium. In this study, Er2O3coating was fabricated on the ferritic steels by dip-coating method with MOD (metal organic decomposition) liquid precursor followed by baking in different atmosphere. The coated specimens were immersed at 500 ◦ C in the static liquid lithium to test the compatibility. It was shown that the compatibility of the coating was degraded when Fe2O3or Fe3O4was formed as the main composition of the substrate oxidation layer during the baking. On the other hand, thin Cr2O3layer in the substrate oxidation layer did not influence the stability of Er2O3coating. Atmosphere controlling for suppressing the substrate oxidation, especially Fe2O3or Fe3O4, during the baking is shown to be essential for the compatibility of MOD Er2O3coating on ferritic steels.

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