An Improved H₂-Gas Pressure Operated LaNi₅ Powder-Dispersed Polyurethane/Titanium 2-Layer Actuator with Reversible Giant and Rapid Expansion by Hydrogenation

• Nishi Yoshitake

  Graduate School of Engineering, Tokai University Laboratoire de Génie Electrique et Ferroélectricité (LGEF), Institut National des Sciences Appliquées de Lyon (INSA Lyon)

• Ohkawa Junya

  Graduate School of Engineering, Tokai University

• Faudree Michael C.

  Graduate School of Engineering, Tokai University

• Kanda Masae

  Graduate School of Engineering, Tokai University Laboratoire de Génie Electrique et Ferroélectricité (LGEF), Institut National des Sciences Appliquées de Lyon (INSA Lyon) Center of Applied Superconductivity and Sustainable Energy Research, Chubu University

• Yuse Kaori

  Laboratoire de Génie Electrique et Ferroélectricité (LGEF), Institut National des Sciences Appliquées de Lyon (INSA Lyon)

• Guyomar Daniel

  Laboratoire de Génie Electrique et Ferroélectricité (LGEF), Institut National des Sciences Appliquées de Lyon (INSA Lyon)

• Uchida Haru-Hisa

  School of Human Development, Tokai University

書誌事項

タイトル別名

• An Improved H₂-Gas Pressure Operated LaNi₅ Powder-Dispersed Polyurethane/Titanium 2-Layer Actuator with Reversible Giant and Rapid Expansion by Hydrogenation

抄録

A unimorph 2-layer (PU:LaNi₅/Ti) actuator consisting of a driving composite sheet with large expansion of polyurethane (PU) dispersed with powder mixture of hydrogen storage alloy of 35 vol%-LaNi₅ and Pd-Al₂O₃ catalyst prepared by solution cast method, and a 5 μm thick Ti sheet exhibited reversible and giant rapid bending motion when subjected to hydrogen atmosphere. Reversible motion was achieved below 0.20 MPa-H₂ pressure where maximum strain (ε^max) values on vertical and horizontal directions were more than 2400 and 1800 ppm, respectively about 1.6 times larger than that reported (1520 and 1120 ppm) for the same actuator PU:LaNi₅/Cu with 10 μm thick copper (Cu) sheet. Moreover, the maximum responsiveness (dε/dt)^max by hydrogenation of cyclic motion of the PU:LaNi₅/Ti was higher than that of the PU:LaNi₅/Cu. The increased (dε/dt)^max values mostly corresponded to decreasing elastic load resistivity (dF/dε). These were due to Ti having higher stiffness and strength than Cu allowing thinner 5 μm sheet. Caution for safety is advised since values presented herein may be different when applying the actuator to zero gravity environments.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 59 (1), 129-135, 2018

  公益社団法人 日本金属学会

キーワード

• hydrogen storage alloy
• polyurethane
• titanium
• actuator

詳細情報

• CRID: 1390282679228866304
• NII論文ID: 130006279167
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.m2017212
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 028739837
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I028739837
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/59/1/59_M2017212/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
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