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金属学报  1993 

碳纤维表面气相生长碳晶须

, PP. 62-67

Keywords: 碳纤维,碳晶须,铁催化剂,气相生长

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Abstract:

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,在液滴底部的碳纤维表面上析出固体碳的动态过程

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