Experimental study of Gas-solid Decarburization process of 1.5 mm Fe-C Alloy Ribbon

In order to investigate the decarburization law of 1.5 mm thick iron-carbon alloy strip,an iron carbon steel strip with initial carbon mass fraction of 3.2% was used and placed into a decarburization furnace under weak oxidizing atmosphere created by Ar-H₂-H₂O mixed gas and heated. The samples were heated to 1 293 K,1 353 K and 1 413 K with holding time of 10~50 minutes respectively for the decarburization treatment via gas-solid reaction.the sample.The results show that the decarburization reaction is a approximate first-order reaction,and the activation energy is 111.9 kJ/mol.The decarburization temperature has a significant effect on the decarburization effect.The final carbon content as function of holding time can be expressed as w_t=3.2e^{((0.196 12-1.62×10-4T)t}.