摘要
考察了准确测定铀铌合金中氢的影响因素。样品的形态对氢的测定结果影响较大 ,屑样中的氢量比柱样中氢量大很多 ,因此 ,柱样中的氢量更接近真实值。铀铌合金中的氢量主要来自表面吸附。真空热抽取法和惰气熔融法的测氢结果基本一致 ,真空热抽取法的相对标准偏差 (RSD)≤ 2 8%。
The affecting factors for determination of trace hydrogen in U Nb alloy are studied. The status of samples affects greatly the measured hydrogen content,which has the higher value for scrap sample than cylinder sample.The hydrogen content in cylinder is closer to real value in U Nb alloy.The hydrogen in U Nb alloy is mainly from surface adsorption.The results of hydrogen determined by vacuum thermal evolved method,in which the relative standard uncertainty is less than 28%,are in agrement with those by inert gas fusion method.
出处
《核化学与放射化学》
CAS
CSCD
北大核心
2002年第1期26-29,37,共5页
Journal of Nuclear and Radiochemistry
基金
中国工程物理研究院基金资助项目 (990 5 68)
关键词
微量氢
铀铌合金
真空热抽取法
惰气熔融法
测定
trace hydrogen
U Nb alloy
vacuum thermal evolved method
affecting factors
