Temperature behavior of exothermic reaction of Al/Ni multilayer powder materials based on cold-rolling and pulverizing method
| Autor: | Shugo Miyake, Shunsuke Kanetsuki, Nagamasa Kametani, Taisei Izumi, Takahiro Namazu |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Diffraction Exothermic reaction Nial Maximum temperature Materials science Physics and Astronomy (miscellaneous) Scanning electron microscope Metallurgy General Engineering Intermetallic General Physics and Astronomy 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences 0103 physical sciences Air atmosphere Composite material 0210 nano-technology computer computer.programming_language |
| Zdroj: | Japanese Journal of Applied Physics. 56:06GN07 |
| ISSN: | 1347-4065 0021-4922 |
| DOI: | 10.7567/jjap.56.06gn07 |
| Popis: | In this paper, the characteristics of self-propagating exothermic reactions of an Al/Ni multilayer powder materials fabricated by a cold-rolling and powdering procedure are reported as initial findings of the first trial on a heat source for various applications with the energy-saving feature. Experimental results showed that, following the reaction of the developed Al/Ni multilayer powder materials in air atmosphere, the maximum temperature increased from approximately 1450 °C to over 1768 °C with increasing number of passes from 20 to 40 in cold-rolling. Furthermore, observations by scanning electron microscopy and crystallographic identification by X-ray diffraction measurements showed that the multilayer structure of powdered Al/Ni after 40 passes of cold-rolling was deformed, became thinner with below sub-micrometer thickness, and almost completely reacted to NiAl intermetallic compounds. It is possible that optimizing cold-rolling conditions enables us to control exothermic heat, which will be useful for heat sources. |
| Databáze: | OpenAIRE |
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