Direct synthesis of carbon nanofibers on the surface of copper powder

✍ Scribed by Larisa I. Nasibulina; Tatiana S. Koltsova; Tuomo Joentakanen; Albert G. Nasibulin; Oleg V. Tolochko; Jari E.M. Malm; Maarit J. Karppinen; Esko I. Kauppinen

• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 873 KB
• Volume: 48
• Category: Article
• ISSN: 0008-6223
• DOI: 10.1016/j.carbon.2010.07.028

✦ Synopsis

A novel approach to synthesize carbon nanofibers (CNFs) directly on the surface of metal lm-sized particles to evenly disperse the carbon nanomaterials in a composite material was proposed. As a metal matrix, 5-10 lm copper particles were utilized. As a carbon source, C 2 H 2 , CH 4 and CO were examined. The best conditions were found to be in C 2 H 2 (30 cm 3 /min) and H 2 (260 cm 3 /min) atmosphere at the temperature of 750 °C. The composites based on copper and CNFs prepared by vacuum hot pressing showed the increase in hardness from 35 to 60 kg/mm 2 almost retaining pure copper electrical properties.