氚钛靶是D-T中子发生器的重要元部件,氚钛靶在存储过程中存在着内部氚衰变并积累氦的过程,氦泡的形成将对氚钛膜的稳定性产生重要影响,因此研究存储数年的氚钛靶的辐照损伤效应对了解氚钛靶的有效使用寿命有重要意义。采用扫描电镜及其附带的能谱和X射线衍射对氚钛靶表层进行检测发现:束流辐照以后氚钛靶表层元素主要为Mo和少量的Ti,表面不存在任何氚化物的物相结构。结果表明:氚钛靶在长达12年的存储时间内,表层氚化钛有效层存在大量脱落的现象。 The tritium-titanium target is an important component of the DT neutron generator. The tritium-titanium target has the process of internal tritium decay and accumulation of helium in the storage process. The formation of the helium bubble will have an important influence on the stability of the tritiated titanium film. Therefore, The radiation damage effects of storing tritium-titanium targets for several years are of great importance for understanding the effective service life of tritium-titanium targets. Scanning electron microscopy and its accompanying energy spectrum and X-ray diffraction were used to detect the surface of tritiated titanium target. The results showed that the surface elements of tritium-titanium target mainly consist of Mo and a small amount of Ti after beam irradiation, and there is no phase structure of any tritide on the surface . The results show that there is a lot of shedding of the effective layer of surface tritiated titanium during the storage period of tritium-titanium target up to 12 years.