Near Full Density Nano Iron-Based Materials by Pulse Current Sintering


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Constant current plus pulse current electrical sintering was introduced into the sintering of a ball-milled nanocrystalline Fe-2Cu-2Ni-1Mo-0.8C mixed powder. Effect of pulse current charging time on the properties of sintered products was studied. Constant electric current sintering was also used for comparison. A nanostructured iron-based material was obtained within 4 minutes of sintering. It has a density of 7.7 g/cm3 (relative density of 98.7 %) with an average grain size (iron-matrix) of 58 nm and carbide particle size of less than 100 nm, a hardness of HRC 64 and transverse rupture strength of 2004 MPa. When only pulsed electric current sintering was used with a sintering time of 5 min, a fine grained iron-base material with density of 7.74 g/cm3 (relative density of 99.2%), a hardness of HRC 65 and transverse rupture strength of 2045 MPa was obtained.



Key Engineering Materials (Volumes 353-358)

Edited by:

Yu Zhou, Shan-Tung Tu and Xishan Xie




Y. Y. Li et al., "Near Full Density Nano Iron-Based Materials by Pulse Current Sintering", Key Engineering Materials, Vols. 353-358, pp. 2143-2146, 2007

Online since:

September 2007




[1] J. R. Groza, A. Zavaliangos: Mater. Sci. & Eng. A Vol. 287 (2000), p.171.

[2] M. Omori: Mater. Sci. & Eng. A Vol. 287 (2000), p.183.

[3] D. S. Perera, M. Tokita and S. Moricca: J. Eur. Ceram. Soc., Vol. 18 (1998), p.401.

[4] V. Mamedov: Powder Metall., Vol. 45 (2002), p.322.

[5] K. Satoshi, K. Hisashi: J. Japan Soc. Powder and Powder Metall., Vol. 50 (2003), p.545.

[6] R. Kalyanaraman, S. Yoo: Nano. Mater., Vol. 10 (1998), p.1379.

[7] Y. Y. Li, Y. Long, X. Q. Li et. al.: Mater. Sci. Forum, Vol 471-472 (2004), p.225 10µm 10µm.

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