Studies Concerning the Microhardness of Sintered Carbon Steels Obtained from Fe and Fe3C Nanopowders
Replacing the graphite with carbides in the mixture with Fe powder may be an alternative technological process, by the fact that as carbides decompose when heated, the carbon is set free and diffuses into the Fe network ensuring chemical and structural homogeneity corresponding to sintered steels. Using cementite nanopowder mix with Fe powder is to ensure a better compaction by pressing, less time to decompose and C diffusion into the Fe network in a remarkably chemical homogeneity. The obtaining procedure for Fe3C consists in direct carburation of Fe powder in a special chamber.
Ionel Chicinaş and Liviu Brânduşan
M. Ciobanu et al., "Studies Concerning the Microhardness of Sintered Carbon Steels Obtained from Fe and Fe3C Nanopowders", Materials Science Forum, Vol. 672, pp. 223-228, 2011