1 School of Advanced materials Engineering, Kongju National University, Kongju, Chungnam,
314-701, Korea
2 Institute for Materials Research, Tohoku University, Katahira 2-1-1, Aoba-ku, 980-8577
Sendai, Japan
3 Korea Institute of Machinery and Materials, Changwon, Kyungnam, 641-010, Korea
| Iron and Iron nitride nanoparticles were synthesized by chemical vapor condensation (CVC) process, using a precursor of Fe(CO)5 and carrier gas of NH3. The crystallization behaviors were examined using X-Ray Diffractometry (XRD) and Transmission Electron Microscopy (TEM) technique. α-Fe nanoparticles were found to form at a lowest decomposition temperature of 500 °C. As the temperature increased up to 700 °C, the crystallization of α-Fe phases was suppressed, and Fe3N nanoclusters less than 5 nm in diameter were begun to form. Further increase of the decomposition temperature leaded the Fe rich phase to Fe3N rich region, being a full crystallization of Fe3N at 1000 °C. Typical particle size of the α-Fe and Fe3N particles was approximately 30∼40 nm in diameter. |
full paper (pdf, 304 Kb)