期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
高岭石/聚苯乙烯插层复合物碳热还原反应制备碳化硅晶须/氧化铝复相陶瓷粉体 被引量:3
1
作者 龙飞 邹正光 +1 位作者 崔超 邵珊 《硅酸盐学报》 EI CAS CSCD 北大核心 2009年第5期767-772,共6页
以二甲基亚砜(dimethylsulfoxide,DMSO)为插层剂制得高岭石/DMSO插层复合物,将苯乙烯单体与高岭石/DMSO插层复合物进行置换反应,成功地将苯乙烯单体引入高岭石层间,层间苯乙烯在加热条件下聚合,制得高岭石/聚苯乙烯插层复合物。以高岭石... 以二甲基亚砜(dimethylsulfoxide,DMSO)为插层剂制得高岭石/DMSO插层复合物,将苯乙烯单体与高岭石/DMSO插层复合物进行置换反应,成功地将苯乙烯单体引入高岭石层间,层间苯乙烯在加热条件下聚合,制得高岭石/聚苯乙烯插层复合物。以高岭石/聚苯乙烯插层复合物为原料,在氩气保护气氛下,于1500℃碳热还原反应制备碳化硅晶须/氧化铝(SiCw/Al2O3)复相陶瓷粉体。结果表明:在高岭石/聚苯乙烯插层复合物中,高岭石的层间距由0.717nm扩张到1.130nm,插层率接近100%,插层作用影响了层间羟基基团的振动,使其键合方式发生改变。X射线衍射和扫描电镜分析表明:合成出SiCw/Al2O3复相陶瓷粉体中SiC和Al2O3为主晶相,SiC呈晶须状,其直径≤200nm,长度≥3μm。 展开更多
关键词 碳化硅晶须/氧化铝 碳热还原反应 高岭石 插层复合物
原文传递
Grinding Characteristics Of Directionally Aligned SiC Whisker Wheel - Comparison With A12O3 Fiber Wheel
2
作者 魏源迁 山口胜美 +2 位作者 菊泽贤二 洞口严 中根正喜 《Journal of Donghua University(English Edition)》 EI CAS 2003年第4期70-75,共6页
A unique SiC whisker wheel was invented,in which the whiskers were aligned normally to the grinding wheel surface.In this paper,grindabilities of the SiC whisker wheel are investigated and compared with those of other... A unique SiC whisker wheel was invented,in which the whiskers were aligned normally to the grinding wheel surface.In this paper,grindabilities of the SiC whisker wheel are investigated and compared with those of other wheels of SiC grains,Al2O3 grains,as well as Al2O3 long and short fibres which were also aligned normally to the grinding wheel surface,respectively.The main research contents concern grinding characteristics of a directionally aligned SiC whisker wheel such as material-removal volume,wheel-wear rates,integrity of the ground surfaces,grinding ratios and grinding efficiency.Furthermore,grinding wheels of whiskers and fibres have a common disadvantage:they tend to load easily.The authors have proposed a simple method of loading-free grinding to overcome this propensity and investigate some related grinding characteristics under loading-free grinding conditions. 展开更多
关键词 GRINDING Grinding wheel SiC whisker Al2O3 fiber Directional alignment Loose grain Loading-free Grinding ratio Surface roughness
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部