Innovative processing of lotus-type porous magnesium through thermal decomposition of wood

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• 作者：M. Mohammadi Zahrani ; M. Meratian ; Y. Kabiri
• 关键词：Cast ; Mechanical properties ; Porous materials ; Thermal decomposition
• 刊名：Materials Letters
• 出版年：2012
• 出版时间：15 October, 2012
• 年：2012
• 卷：85
• 期：Complete
• 页码：14-17
• 全文大小：615 K

文摘

The aim of this study was to fabricate lotus-type porous magnesium with aligned cylindrical pores through thermal decomposition of wood by unidirectional solidification in the atmospheric pressure. Pores with cylindrical shape, whose growth direction was parallel to the solidification direction, were observed in the samples. The dependence of the pore structure (porosity and pore size) as well as mechanical properties on the wood amount was investigated. It was found that by increasing the wood content, porosity increased while average pore size was not affected. The compressive yield strengths of fabricated porous samples were slightly lower in comparison to the theoretical values mainly due to the presence of short pores with a small aspect ratio as well as existence of wood decomposition products along grain boundaries.