Based on the unique character of the natural materials, three types of wood were selected as bio-template. Through infiltrating with various organic or inorganic impregnants, followed by sintering at high temperature,...Based on the unique character of the natural materials, three types of wood were selected as bio-template. Through infiltrating with various organic or inorganic impregnants, followed by sintering at high temperature, morph-genetic SiC/C, TiC/C ceramics were produced. Observing the microstructure under the SEM and the TEM, the morph-genetic ceramics were shown to retain the intrinsic porous structure of the original wood template, and the resultant was distributed mainly on the surface layer of the cellular wall. The synthesis process had little effect on the hierarchical structure with a wide range from nanometer to micron.展开更多
基金the National Natural Science Foundation of China (Grant Nos.50271001 , 50371055)the National High Technology Research and Development Program of China (Grant No.2002AA334030)+2 种基金the Key Project on Basic Research of Shanghai (Grant No. 03JC14044)d the Major Project on Basic Research of Shanghai, the Fok Ying Tung Education Fund (Grant No. 94010) the Excellent Young Teachers Program of MOE of China.
文摘Based on the unique character of the natural materials, three types of wood were selected as bio-template. Through infiltrating with various organic or inorganic impregnants, followed by sintering at high temperature, morph-genetic SiC/C, TiC/C ceramics were produced. Observing the microstructure under the SEM and the TEM, the morph-genetic ceramics were shown to retain the intrinsic porous structure of the original wood template, and the resultant was distributed mainly on the surface layer of the cellular wall. The synthesis process had little effect on the hierarchical structure with a wide range from nanometer to micron.
