Growth of CNTs on 304 Stainless Steel Using Sparked Iron as a Catalyst
Carbon nanotubes (CNTs) were grown on 304 stainless steel using iron as a catalyst. By using the applied voltages of 4-6 kV, iron wire with 0.5 mm in diameter was sparked for 1, 2, 10 and 100 times to form catalytic dots on the steel substrate. CNTs were subsequently grown in a gas mixture of 10 ml/s Ar and 0.1 ml/s C2H2 at a temperature range 700 - 900 K for 300 s (5 min). The dots and CNTs were characterised using AFM, SEM and TEM to determine their characteristics.
Hyung Sun Kim, Yu Bao Li and Soo Wohn Lee
S. Thongtem et al., "Growth of CNTs on 304 Stainless Steel Using Sparked Iron as a Catalyst", Materials Science Forum, Vols. 510-511, pp. 470-473, 2006