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测定了不同材龄的LaNi4.9Al0 .1Dx 去氘化动力学参数 ,评价了氚老化对LaNi4.9Al0 .1Dx去氘化动力学性能的影响。研究结果表明 ,反应速率常数随老化时间的延长而降低 ;氚老化不改变LaNi4.9Al0 .1Dx 去氘化的反应级数 ;去氘化反应级数a(由氘压决定 )和b(由氘浓度决定 )分别为 0 5和 1;活化能随老化时间的延长而增加 ,老化 112 0d后 ,速率常数降低了 2个数量级 ,活化能约增加 30 %。
The kinetic parameters of deuteration of LaNi4.9Al0.1Dx at different ages were measured to evaluate the effect of aging of tritium on the deuteration kinetics of LaNi4.9Al0.1Dx. The results show that the reaction rate constant decreases with the aging time; tritium aging does not change the reaction order of deuteration of LaNi4.9Al0.1Dx; the dedeuteration reaction order a (determined by deuterium pressure) and b (deuterium The concentration was determined to be 0 5 and 1, respectively. The activation energy increased with the aging time. The rate constant decreased by two orders of magnitude after 112 days and the activation energy increased by about 30%.