Improvement of Response Time of Thin Film Unimorpli Structure using Hydrogen Storage Alloy by Platinum Surface Treatment
Improvement of Response Time of Thin Film Unimorpli Structure using Hydrogen Storage Alloy by Platinum Surface Treatment
复制标题
通过铂表面处理改善储氢合金薄膜 Unimorpli 结构的响应时间
DOI：
10.2320/jinstmet.68.58
复制
发表时间：
2004
影响因子：
--
通讯作者：
Y. Nishi
中科院分区：
文献类型：
--
作者：
Takamitsu Honjo;H. Uchida;Y. Matsumura;Y. Nishi
在这项研究中，铂表面处理的影响，对机械响应的LaNi 5薄膜致动器沉积在聚酰亚胺基板上进行了研究。由于该致动器可以通过氢气压力控制来可逆地驱动，因此该致动器有望作为各种氢气相关设备中的氢气流量的传感器和/或控制器。这种显著改变的机械响应归因于反应速率决定步骤的切换。在样品表面上的氢气分子的解离被认为是通过铂处理改变为膜中的氢原子的渗透/扩散。
In this study, the effect of the platinum surface treatment on mechanical response of LaNi5 thin film actuator deposited on polyimide substrates was investigated. Since this actuator could be reversibly driven by hydrogen pressure control, this actuator is expected as a sensor and/or controller of hydrogen gas flux in various hydrogen related devices.In the experiments, initiating time of the actuation after hydrogen gas exposure is reduced from 100 to 10 s by platinum surface treatment. This significantly modified mechanical response is attributed to switching of the reaction rate determining steps. Dissociation of hydrogen gas molecules on the sample surface is considered to be changed to permeation/diffusion of hydrogen atoms in the film by the platinum treatment.