碳纳米管在金属化球团中的原位制备与表征

In-Situ Preparation and Characterization of Carbon Nanotubes in Metal Pellets

在金属化球团中原位制备了碳纳米管,得到了多壁碳纳米管增强铁基复合材料,并研究了制备温度、丙酮体积与金属化球团质量比对碳纳米管原位生长的影响规律。实验采用场发射扫描电子显微镜、透射电子显微镜和X射线衍射仪对样品进行了表征与分析。研究结果表明:温度对碳纳米管的生长影响较大,随着制备温度的升高,碳纳米管的产量和质量均呈现出先提高后降低的规律。当制备温度为700℃,丙酮体积与金属化球团质量比为3 mL·g^(-1)时生成的是管径均一、杂质含量少、界面结合良好的多壁碳纳米管增强铁基复合材料,但复合材料的性能还有待进一步研究。

The carbon nanotubes were in-situ prepared in metal pellets and the multi-walled carbon nanotubes reinforced iron-matrix composites were obtained.The influence rules of the preparation temperature and rate of acetone volume and metal pellet quality on the in-situ growth of the carbon nanotubes were studied.The samples were characterized and analyzed by field emission scanning electron microscopy,transmission electron microscopy and X-ray diffractometer.The results show that the temperature has a great effect on the growth of the carbon nanotubes.With the increase of the preparation temperature,the yield and quality of the carbon nanotubes increase firstly and then decrease.When the preparation temperature is 700℃and the ratio of the acetone volume and metal pellets mass is 3 mL·g^（-1）,the multi-walled carbon nanotubes reinforced ironmatrix composites with uniform diameter,less impurities,good interface bonding are obtained.But the properties of composites need to be further researched.