Pd包覆TiZrNiCo的抗毒化及动力学性能
发布时间：2019-06-03 08:25
【摘要】：采用化学镀方法在TiZrNiCo合金颗粒表面包覆上0.4~2μm厚的Pd膜,并测得不同膜厚的Pd/TiZrNiCo试样在混合气体中的吸氢动力学。结果表明:Pd膜越薄,Pd/TiZrNiCo抗毒化性能及吸氢动力学性能越好,0.4μm厚Pd膜试样的吸氢量为2μm厚Pd膜试样的1.6倍。Pd/TiZrNiCo试样吸放氢后粉化,引发Pd膜破裂导致吸氢速率减缓与基体粉化引发吸氢速率加快的两种效果,吸氢量随吸放氢次数的增加而出现波动性的上升回落。根据吸氢机理及毒化机理,提出并采用相应的动力学模型,并对TiZrNiCo吸纯氢及Pd/TiZrNiCo吸氢动力学曲线进行了拟合。
[Abstract]:The Pd film with thickness of 0.4 ~ 2 渭 m was coated on the surface of TiZrNiCo alloy particles by chemical plating, and the hydrogen absorption kinetics of Pd/TiZrNiCo samples with different film thickness in mixed gas was measured. The results show that the thinner the Pd film is, the better the antitoxic properties and hydrogen absorption kinetics of Pd/TiZrNiCo are. The hydrogen absorption capacity of 0.4 渭 m thick Pd film sample is 1.6 times of that of 2 渭 m thick Pd film sample. PD / TiZrNiCo sample is powdered after hydrogen absorption and desorption. There are two effects: the slow down of hydrogen absorption rate caused by the rupture of Pd film and the acceleration of hydrogen absorption rate caused by matrix powderization. The hydrogen absorption rate fluctuates and decreases with the increase of hydrogen absorption and desorption times. According to the mechanism of hydrogen absorption and poisoning, the corresponding kinetic model was proposed and adopted, and the kinetic curves of pure hydrogen absorption by TiZrNiCo and hydrogen absorption by Pd/TiZrNiCo were fitted.
【作者单位】： 北京有色金属研究总院能源材料与技术研究所;
【基金】：科技部国际热核聚变(ITER)计划专项(2010GB113003)
【分类号】：TG178
[Abstract]:The Pd film with thickness of 0.4 ~ 2 渭 m was coated on the surface of TiZrNiCo alloy particles by chemical plating, and the hydrogen absorption kinetics of Pd/TiZrNiCo samples with different film thickness in mixed gas was measured. The results show that the thinner the Pd film is, the better the antitoxic properties and hydrogen absorption kinetics of Pd/TiZrNiCo are. The hydrogen absorption capacity of 0.4 渭 m thick Pd film sample is 1.6 times of that of 2 渭 m thick Pd film sample. PD / TiZrNiCo sample is powdered after hydrogen absorption and desorption. There are two effects: the slow down of hydrogen absorption rate caused by the rupture of Pd film and the acceleration of hydrogen absorption rate caused by matrix powderization. The hydrogen absorption rate fluctuates and decreases with the increase of hydrogen absorption and desorption times. According to the mechanism of hydrogen absorption and poisoning, the corresponding kinetic model was proposed and adopted, and the kinetic curves of pure hydrogen absorption by TiZrNiCo and hydrogen absorption by Pd/TiZrNiCo were fitted.
【作者单位】： 北京有色金属研究总院能源材料与技术研究所;
【基金】：科技部国际热核聚变(ITER)计划专项(2010GB113003)
【分类号】：TG178
【参考文献】
相关期刊论文 前4条
1 桑革;沈崇雨;张义涛;曹伟;朱永法;叶小球;孙颖;;镧系合金表面镀Pd工艺研究[J];表面技术;2006年05期
2 曾高峰;史蕾;徐恒泳;;用化学镀法制备Pd/Ag膜时膜厚和组成的控制[J];催化学报;2009年12期
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