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研究了铀在干燥氯化氢 -空气介质中的加速腐蚀情况 ,并进行了干燥空气氧化对照实验。研究表明 :在干燥的含氯化氢 -空气介质下铀的腐蚀速度与干燥空气介质下的氧化速度相比差别不大 ,但在不同阶段的速度趋势有显著的差别 ;在干燥空气介质中 ,铀表面的氧化主要是形成 U O2 ,U O2 + x;氯化物夹杂对腐蚀有显著的促进作用 ;氯化氢中的氢元素与铀作用产生氢化铀 ,后者在氧和氯存在的条件下 ,反应生成氢气 ,氢气在金属 /氧化物的缺陷区富集 ,产生气泡 ,从而极大影响材料的使用寿命。
The accelerated corrosion of uranium in a dry hydrogen chloride-air medium was studied and a dry air oxidation control experiment was conducted. The results show that the corrosion rate of uranium in dry hydrogen chloride-air medium is not significantly different from that in dry air medium, but there is a significant difference in the velocity trends in different stages. In the dry air medium, the uranium surface Of the main formation of U O2, U O2 + x; chloride inclusions have a significant role in promoting corrosion; hydrogen in hydrogen chloride and uranium uranium generated hydrogenation, the latter in the presence of oxygen and chlorine, the reaction of hydrogen , Hydrogen is enriched in metal / oxide defect areas, creating bubbles that greatly affect the useful life of the material.