Study of the deuterated titanium Ti2Hx sample by using rnnuclear reaction analysis and material analysis methods

摘要

Titanium is one of the best hydrogen loading material. The prerndicted maximum loading ratio of hydrogen in titanium may reach to 2.0. In this rnwork, a titanium layer on molybdenum substrate was deuterated with the atomic rnratio X =2H/Ti>1.6. The change of the surface topography and microstructure of rnthe sample before and after loading was observed by using Scan Electron Microscopy rn(SEM). The surface segregation of the samples after deuteron bombardment was also rnobserved. A fiuctuatingly-incrcasing trend of the deuterium density in titanium target rnwas detected in the deuteron implantation experiments. which indicated a suddenly rnexplosion (segregation) or fast diffusion of deuterium in the titanium. Significant rnamount of nitrogen contamination was found in the Ti2Hx sample by nuclear reaction rnanalysis (NRA), which indicated that the Ti2Hx structure might have the feature to rntrap nitrogen from air. The nitrogen contamination in Ti2Hx significantly affects the rnincrease of the atomic ratio X =2H/Ti.