晶界工程对Incoloy 800H合金在850℃ FLiNaK熔盐中腐蚀行为的影响
Corrosion and Protection(2018)
Abstract
为了评价晶界工程(GBE)对800H合金在850℃FLiNaK熔盐中腐蚀行为的影响,对GBE 800H和800H合金分别在850℃FLiNaK中进行了100 h静态腐蚀试验.应用扫描电子显微镜/能谱仪(SEM/EDS)、聚焦离子束/扫描电镜/能谱仪(FIB/SEM/EDS)、高精度天平测量了质量变化和微区成分变化,观察了腐蚀形貌,并分析了腐蚀机制和过程.结果表明:FLiNaK熔盐主要沿晶界向基体渗透;GBE 800H合金的腐蚀深度和FLiNaK沿晶界的渗透深度都小于800H合金的.
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