Author/Authors :
Nagasaka، نويسنده , , Takuya and Kondo، نويسنده , , Masatoshi and Muroga، نويسنده , , Takeo and Noda، نويسنده , , Nobuaki and Sagara، نويسنده , , Akio and Motojima، نويسنده , , Osamu and Suzuki، نويسنده , , Akihiro and Terai، نويسنده , , Takayuki، نويسنده ,
Abstract :
Fluoridation and oxidation of JLF-1 (Fe–9Cr–2W–0.1C) and NIFS-HEAT-2 (V–4Cr–4Ti) were examined under various corrosion conditions, such as Flibe (2LiF + BeF2) molten salt at 823 K for 2003 h, H2O–47%HF solution at RT for 2 min, and He–(0–1%)HF gas mixture containing moisture and O2 gas impurities at 823 K for 2.5–100 h. Oxidation dominated fluoridation under all test conditions, even when the fluoridation agent, the F atoms in HF, was 16× more plentiful than the oxidation agent, O atoms in H2O, and O2. Corrosion products were mainly considered as Cr2O3, while fluoride was indicated in a very limited surface region. JLF-1 exhibited better corrosion resistance in He–HF gas mixture tests than NIFS-HEAT-2.
