摘要
采用增重法研究了金属铀表面经CO处理后在 4 0℃和 70℃潮湿空气中的抗蚀能力。研究结果表明 ,在70℃潮湿空气中 ,其抗蚀能力增加不明显 ;而在 4 0℃环境中 ,金属铀表面的抗蚀能力得到明显提高 ,且在实验范围内其抗蚀能力随CO剂量的增加而增强。用俄歇电子谱 (AES)分析了铀试样处理前后表层的成分变化。分析结果表明 ,铀表面经CO处理后 ,其表层形成了一定厚度的富碳层 ,并显示该富碳层对提高铀表面抗蚀能力起着重要作用。
The corrosion resistance in humid air at 70℃ and 40℃ of uranium treated with CO has been studied using weight gain method.The results show that the oxidation resistance of treated uranium in moist air has not been enhanced obviously at 70℃,but has been improved clearly at 40℃.Increasing dose of CO in the experimental range gives the better results. The composition of surface layer of uranium and treated uranium have been analyzed respectively by Auger Electron Spectroscopy (AES). The analysis indicates that there is a rich carbon layer formed in the surface layer after uranium has been treated with CO,and this rich carbon layer is probably important to enhance the corrosion resistance of uranium.
出处
《核化学与放射化学》
CAS
CSCD
北大核心
2002年第1期34-37,共4页
Journal of Nuclear and Radiochemistry
