Abstract
The solid/gas eutectic unidirectional solidification process is a new kind of technology fabricating the lotus-type porous structure. Besides having the properties of large specific surface area, excellent sound absorption, penetrating performance etc. of traditional porous materials, the particularity of the lotus-type porous structure makes it has extraordinary mechanical and thermal properties. There is a great potential for lotus-type porous aluminum in the field of lightweight engineering and heat dissipation of chip owing to its low density, outstanding corrosion resistance and high thermal conductivity. However, the fabrication of lotustype porous aluminum has always been more difficulty than other metals. Until porous aluminum with excellent pore structure was fabricated under very small solidification rates (0.008~0.015 mm/s) and high superheat degrees of melt (240~340 K), the *国家自然科学基金项目51271096和教育部新世纪优秀人才支持计划项目NCET-12-0310资助 收到初稿日期: 2014-06-09,收到修改稿日期: 2014-09-04 作者简介:杨倩倩,女, 1986年生,博士生 DOI: 10.11900/0412.1961.2014.00300
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