Fabrication, properties, and applications of porous metals with directional pores
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- NAKAJIMA Hideo
- The Institute of Scientific and Industrial Research, Osaka University
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Lotus-type porous metals with aligned long cylindrical pores are fabricated by unidirectional solidification from the melt with a dissolved gas such as hydrogen, nitrogen, or oxygen. The gas atoms can be dissolved into the melt via a pressurized gas atmosphere or thermal decomposition of gaseous compounds. Three types of solidification techniques have been developed: mold casting, continuous zone melting, and continuous casting techniques. The last method is superior from the viewpoint of mass production of lotus metals. The observed anisotropic behaviors of the mechanical properties, sound absorption, and thermal conductivity are inherent to the anisotropic porous structure. In particular, the remarkable anisotropy in the mechanical strength is attributed to the stress concentration around the pores aligned perpendicular to the loading direction. Heat sinks are a promising application of lotus metals due to the high cooling performance with a large heat transfer.<BR><BR>(Communicated by Akihisa INOUE, M.J.A.)
収録刊行物
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- Proceedings of the Japan Academy. Ser. B: Physical and Biological Sciences
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Proceedings of the Japan Academy. Ser. B: Physical and Biological Sciences 86 (9), 884-899, 2010
日本学士院
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詳細情報 詳細情報について
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- CRID
- 1390001204146095232
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- NII論文ID
- 130000442358
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- NII書誌ID
- AA00785485
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- ISSN
- 13492896
- 03862208
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- NDL書誌ID
- 10942525
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- 使用不可