摘要
木材经千百万年自然界的演化,形成了独特的生物学结构,多层次、纤维状胞管结构和各向异性是其主要特点。木材这种高气孔率材料有良好的刚性、强度和韧性,与其结构是密切相关的。以木材为模板,通过有机—无机转化,获得具有生物结构的陶瓷材料,为材料的结构设计提供了新思路。通过木材的陶瓷化可以制备出炭素材料、碳化物陶瓷、氧化物陶瓷、无机/有机复合材料和薄膜等。木材是可再生性资源,这种技术对结构的可调控性很好,材料性能独特,发展前景广阔。评述了该领域近年来的研究进展。
Wood has developed a unique biostructure in evolutionary process of nature, which is distinguished by a hierarchical fibrilar tracheidal structure and anisotropy. Although having a cellular microstructure of high porosity, wood exhibits a remarkable combination of high strength, stiffness and toughness due to its particular structure. Conversion of native wood into ceramics with a microstructure pseudomorphous to the bioorganic template anatomy offers great potential for designing novel ceramics with biomorphic morphologies. Carbon woodceramics,carbides ,oxides,organic/inorganic composites and thin films have been prepared by this technique in recent years. Recent progress in this field is reviewed.
出处
《材料导报》
EI
CAS
CSCD
2003年第4期66-69,共4页
Materials Reports
基金
国家自然科学基金(59872025)
