Study on corrosion in metal vapor atmosphere in fusion blanket

液态金属和熔盐被认为是聚变反应堆包层系统的冷却剂和氚增殖剂。本研究的目的是研究液态核反应堆产生的金属蒸气的基本特征和材料在蒸气气氛中的腐蚀。研制了一套适用于腐蚀试验的实验装置。该仪器具有测量蒸汽压的功能。在腐蚀分析方面，建立了在蒸气气氛中腐蚀后附着在试件表面的金属元素的测定方法。

Liquid metals and molten salts are considered as a coolant and a tritium breeder for the blanket systems of fusion reactors. The purpose of the present study is to investigate the fundamental characteristics of metal vapor generated from the liquid breeders and the corrosion of materials in the vapor atmosphere. The experimental apparatus, which can apply to the corrosion tests, were developed. This apparatus equipped the function for the measurement of vapor pressure. For the corrosion analysis, the method for the measurement of metal elements adhered on a specimen surface due to the corrosion in the vapor atmosphere were established.