Hydrogen-Induced New Functions in Sub-Nano Lattice Matter
| Autor: | Jun Nakahigashi, Masuo Okada, Asaya Fujita, Atsunori Kamegawa, Miho Yamauchi, Akira Yamaguchi, Hiroshi Kitagawa |
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| Rok vydání: | 2009 |
| Předmět: |
Materials science
Hydrogen Hydride Metallurgy Alloy Metals and Alloys chemistry.chemical_element engineering.material Condensed Matter Physics Grain size Chemical engineering chemistry Mechanics of Materials visual_art Nano Materials Chemistry engineering visual_art.visual_art_medium Dehydrogenation Ceramic Metamagnetism |
| Zdroj: | Journal of the Japan Institute of Metals. 73:141-150 |
| ISSN: | 1880-6880 0021-4876 |
| Popis: | This paper includes some results of “Hydrogen-Induced New Functions in Sub-Nano Lattice Matters” accomplished by MEXT's program “Elements strategy Project”. In the 21st century, the era concerning about environment, this research achievement utilizing hydrogen as the technology for strengthening alloys will be expected to make a breakthrough in the metal heat-treatment and processing technology as the new environmental conscious process. Hydrogen heat-treatments for grain-size refinements of alloys were performed. The grain size of Cu-3 mass%Ti alloy turned into about 20~50 nm after hydrogenation and dehydrogenation treatment. Moreover, grain-size refined Ti-based alloy showed large super-elastic elongation. On the other hand, hydrogen induced functions in the alloys were also investigated. Hydrogen transmitting films with Pd nanogranular particles dispersed in ceramic material were developed as attachment of metal-hydride switchable mirrors. Metamagnetism transition temperature (Tc) could be increased by hydrogen introduction in La(FexSi1-x)13. Pd/Pt core-shell type nano-particles were also investigated. |
| Databáze: | OpenAIRE |
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