通过直接集气法和X射线衍射分析,研究了TiH2在空气中加热氧化处理前后的释氢行为.结果表明:经高于450℃空气中加热处理后TiH2于Ar气氛中释氢,TiH1.97和TiH1.92向TiH1.5转变的相变开始温度有明显的升高趋势,表明氧化产物对TiH2有较好的缓释效果;氧化温度对TiH2缓释效果的影响程度明显大于保温时间的影响.TiH2在氧化过程中随温度和保温时间的变化有明显的颜色变化,呈灰色→金绿色→金黄色→紫色→蓝色的变化趋势;颜色的变化不仅表明了氧化产物厚度和相的变化,而且还表明氧化是一个渐进的过程.
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