Paper Title:
Near Full Density Nano Iron-Based Materials by Pulse Current Sintering
  Abstract

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.

  Info
Periodical
Key Engineering Materials (Volumes 353-358)
Edited by
Yu Zhou, Shan-Tung Tu and Xishan Xie
Pages
2143-2146
DOI
10.4028/www.scientific.net/KEM.353-358.2143
Citation
Y. Y. Li, Y. Long, X. Q. Li, T. L. Ngai, "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
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Price
$32.00
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