【摘要】 该研究以柳桉木材结构为模板,通过对木材的碳化、硅树脂的浸渍与反应、铝合金的浸渍处理,制备了具有木材结构的Al/C、Al/(SiC+C)两种复合材料,并对复合材料的微观结构、热膨胀性能及导热性能进行了研究。结果表明:该复合材料保持了所选木材的天然结构特征,并且其热膨胀系数明显低于铝合金,导热系数远高于由木材转化的多孔碳。更多还原

【Abstract】 Wood is a natural material with a rational and aesthetic structure.Recently,we have succeeded in using wood as a template to produce Al/C and Al/(SiC+C) composites.Porous carbon was first pyrolyzed from the wood template.The final composites were then obtained by injecting aluminum alloy and silicone resin into the porous carbon.The microstructures,thermal expansions,and thermal conductivity of these products were then analyzed.The results indicated that the structures of the composites are controlled by the natural structure of wood.Moreover,the composites exhibit a lower coefficient of thermal expansion than aluminum and a higher thermal conductivity than porous carbon.更多还原