【摘 要】
：
Porous SiC ceramics were prepared by freeze-drying processing.In order to modify the mechanical properties of the porous SiC,polyvinyl alcohol(PVA)was added
【机 构】
：
Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,China
【出 处】
：
The 5th International Congress on Ceramics, ICC5(第五届国际陶瓷大会)
论文部分内容阅读
Porous SiC ceramics were prepared by freeze-drying processing.In order to modify the mechanical properties of the porous SiC,polyvinyl alcohol(PVA)was added as the binder and pore morphology controller in this work.Although SiC specimens were sintered at a high temperature of 2000℃,there are still large quantity of macropores generated by sublimation of large ice crystals and micropores in the ceramic wall caused by small ice crystals sublimating,SiC particles stacking,and burning out of PVA.With increasing the solid content of slurry,the specimens exhibit higher density,thus resulting in better strength of the porous SiC ceramics.
其他文献
We report the retention of cubic phase in the synthesized one-dimensional 10ScSZ/Al2O3 core-shell structure.The mechanism of the observed phase stability is
Ceramic foams have been studied as radiant burners,thermal insulators and recently as catalytic filtration medium.These foams are used as nanostructured cat
棉花黄萎病是由大丽轮枝菌(Verticillium dahliae)侵染引起的真菌性维管束系统病害,是棉花最严重的病害之一,给我国棉花生产造成严重损失,被称为“棉花的癌症”目前以菌治菌
Porous SiC ceramics were prepared from sodium borate,SiC,and activated carbon sintering at temperatures as low as 700-850℃ in air.The bonding behavior,mech
SiC/Al2O3 composite porous ceramics were fabricated with different K2O additions using graphite as the poreformer.The effects of K2O addition on the phase c
Many of the most successful and precise additive manufacturing(AM)technologies are based on the deposition layer-by-layer of a flowable powder.Since the fir
Silicon-based porous structural ceramics: silicon nitride(Si3N4),SiAlON,Si3N4/SiC nanocomposites,are fabricated by various techniques.Pressureless sintering
Dense γ-Y2Si2O7 ceramics are promising silicates with very low thermal conductivity and excellent chemical and thermal stability in harsh environments.Howe
Chemical looping combustion(CLC)is a promising carbon capture technology where cyclic reduction and oxidation of a metallic oxide,which acts as a solid oxyg
植被是陆地表面一种很重要的土地覆盖类型,在地表和大气间的物质能量交换中起着极为重要的作用。叶面积指数LAI和吸收光合有效辐射比例FAPAR是表征植被生长状况的关键参数,通