화학공학소재연구정보센터
Materials Chemistry and Physics, Vol.138, No.2-3, 423-426, 2013
A nanoscale dispersion of TiC in cast carbon steel through a reaction in melt
A homogeneous and nanoscale dispersion of TiC in a low carbon steel (SA106, Grade B) matrix was obtained using a conventional vacuum casting technique with the addition of small Ti (similar to 0.05 wt%). Thermodynamically stable TiC nanoparticles (fcc, a = 4.317 angstrom) were uniformly precipitated as a result of a simple in-situ chemical reaction (Fe-Ti + C -> TiC + Fe) in melt. About 99% of the TiC precipitates were less than 20 nm in size. Their mean diameter and number density were 8.63 nm and 4.8 x 10(17) m(-3), respectively. Crown Copyright (C) 2012 Published by Elsevier B.V. All rights reserved.