Oxidation Kinetics of the Sintered Iron Parts Steam Treated in an Industrial Continuous Furnace

Abstract:

It has been studied a steam treatment process in an industrial continuous furnace for sintered iron parts in a temperature range varying from 490 to 570 °C and sample´s sintered densities of 6,52 and 6,77 g / cm3 . The tests have showed oxidation kinetics with two stages, each of them obeying a parabolic law. The first stage was faster than the second. The oxidation time when the oxidation kinetics of the first stage has changed for the second stage showed off very sensitive to the process temperature and sintered densities of the parts which are in agreement with the process rate controlling mechanism that was found to be the iron diffusion through the oxide layer.

• Periodical: Materials Science Forum (Volumes 660-661)
• Pages: 243-248
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.660-661.243
• Online since: October 2010
• Authors: Eduardo Nunes, Ivan Gilberto Sandoval Falleiros
• Keywords: Continuous Furnace, Oxidation Kinetic, Sintered Iron, Steaming Treatment

References

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