1991 Fiscal Year Final Research Report Summary
Application of Shape Memory Alloy for Hydrogen Sensor
| Project/Area Number |
02555149
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| Research Category |
Grant-in-Aid for Developmental Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
金属材料(含表面処理・腐食防食)
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| Research Institution | Nagoya University |
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Principal Investigator |
HOSOI Yuzo Nagoya University Faculty of Engineering, Professor, 工学部, 教授 (60157021)
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| Co-Investigator(Kenkyū-buntansha) |
YAMADA Takahiko Daido Special Steel, Manager, 研究開発本部, 主査
WADE Noboru Topy Industries, Senior Researcher, 第一技術研究所, 主幹
KUNIMITSU Seiji Nagoya University Faculty of Engineering, Research Associate, 工学部, 助手 (50023346)
MIYAHARA Kazuya Nagoya University Faculty of Engineering, Associate Professor, 工学部, 助教授 (70011096)
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| Project Period (FY) |
1990 – 1991
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| Keywords | Hydrogen Sensor / Shape Memory Alloy / Shape Memory Effect / Hydrogen Charge / Hydrogen Embrittlement / Tensile property / Pt-Pd Coating |
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| Research Abstract |
Ti-ni alloy is well known as one of the most technologically important shape memory material. Ti and Ni, however, have a tendency to absorb a hydrogen easily. During the study of the effect of hydrogen on Ti-Ni alloy, the shape memory effect (S.M.E.) was found to be induced by hydrogen charging under some conditions. It is considered that this alloy has a possibility to be applicable to a hydrogen sensor. An effort has been focussed on clarifying the relation between S.M.E. and hydrogen charged and found that S.M.E. is dependent upon the amount of hydrogen induced. In applying of this alloy to a hydrogen sensor, however, much attention should be paid to hydrogen embrittlement observed in tensile test. The elongation, in tensile test, was lowered to 0.1 compared with 0.6 of non-charged materials. In glow discharging, which is thought to be mild charging of hydrogen and more similar to actual environment, the evaluation of this ally was also conducted and found that the tensile property was nearly same to the specimens charged electrolytically. This alloy is promising as a hydrogen sensor, although more detailed experiment will be necessary in further study.
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