碳纤维表面气相生长碳晶须  

CHEMICAL VAPOUR GROWTH OF CARBON WHISKERS ON CARBON FIBRE

作　　者：孙守金[1] 魏永良[1] 刘敏[1] 李敏君[1] 

机构地区：[1]中国科学院金属研究所,助理研究员沈阳110015

出　　处：《金属学报》1993年第4期B158-B163,共6页Acta Metallurgica Sinica

基　　金：国家自然科学基金

摘　　要：用铁做催化剂,乙炔做原料气体,在碳纤维表面上长出二级增强相——碳晶须初步考察了生长温度、铁盐溶液浓度对碳晶须生长的影响结果表明,碳晶须生长的最佳温度在1000℃左右,在催化剂溶液浓度适当时,碳晶须均匀分布在母体纤维上,并把相邻的碳纤维连结起来;温度过高或催化剂溶液浓度过高,都会在碳纤维表面上形成大块碳沉积团碳晶须的生长是气相中的碳原子溶解于纤维表面上的催化剂液滴后。The secondary reinforcement, carbon whiskers, may grow on the surface ofparent reinforcement, carbon fibres, by chemical vapour growth from acetylene using Fe saltsolution as catalyzer. The optimal growing temperature is about 1000℃, and while the con-centration of catalytic solution is appropriate, the carbon whiskers may deposite uniformlyand link each other on the parent carbon fibre surface. If the temperature or concentration istoo high, the coarse cluster of carbon may deposite on the fibre surface. The mechanism ofcarbon whisker growth is believed that the carbon atoms in vapour phase dissolve first in theFe salt drops over fibres, then the solid carbon grains precipitate on the film surface.

关 键 词：碳纤维 碳晶须 铁催化剂 气相生长 

分 类 号：TQ342.742[化学工程—化纤工业]