Improved Response Time of a Thin Film Hydrogen Storage Alloy Unimorph Structure after Platinum Surface Treatment

• Nishi Yoshitake

  Department of Materials Science, Tokai University

• Uchida Haru-Hisa

  Department of Human Development, Tokai University

• Honjo Takamitsu

  Department of Materials Science, Tokai University

抄録

In this study, the effect of a platinum surface treatment on the mechanical response of a LaNi₅ thin film actuator deposited on polyimide substrates was investigated. Since this actuator could be reversibly driven by hydrogen pressure control, it could function as a sensor and/or controller of the hydrogen gas flux in various hydrogen related devices. In the experiments, the incubation period of the actuation after hydrogen gas exposure was reduced from 100 to 10 s by the platinum surface treatment. This significantly modified mechanical response is attributed to a switching of the reaction rate determining steps. The platinum treatment enhanced the decomposition rate of hydrogen gas molecules at the surface. The platinum treatment should bring about a change of rate determining step to a permeation/diffusion of the hydrogen atoms into the film.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 45 (9), 2902-2905, 2004

  公益社団法人 日本金属学会

キーワード

• actuator
• unimorph structure
• platinum
• LaNi<SUB>5</SUB>
• hydrogen storage alloy
• thin film

詳細情報

• CRID: 1390001204251239168
• NII論文ID: 10013580048
• NII論文ID: 130004452597
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.45.2902
• COI: 1:CAS:528:DC%2BD2cXpvV2gsLY%3D
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 7088265
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7088265
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/45/9/45_9_2902/_pdf
• 本文言語コード: en
• データソース種別:
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• 抄録ライセンスフラグ: 使用不可