采用化学气相沉积(CVD)法在碳纤维(CF)表面原位生长碳纳米管(CNTs).考察了不同催化剂、沉积温度、氢气流量以及样品距进气口距离等工艺参数对CNTs-CF生长的影响.利用SEM和高分辨透射电子显微镜(HRTEM)对CNTs-CF形貌和微结构进行了表征和分析.结果表明:在CF表面原位生长的CNTs为多壁结构,其中以Ni为催化剂得到的CNTs直径小、分布均匀;在600～750℃温度范围内,随着温度的升高,CNTs直径和长度减小,产量降低;随着氢气流量的增加,CNTs直径和长度均增加;距进气口30 cm,在CF表面得到的CNTs覆盖率高、直径小且分布窄,有利于制备高质量CNTs.
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