论文部分内容阅读
为了研究铁碳合金薄带固相脱碳反应的动力学。试验以Ar-H2-H2O为脱碳气氛,在可控气氛管式炉内对Fe-C合金薄带进行脱碳。把铁碳合金薄带放入加热场中加热到1 020、1 080和1 140℃,并分别保温脱碳0、10、30、50、60、70、80和90min。结果表明,碳向反应界面的扩散是脱碳反应的限制性环节,脱碳温度的升高和脱碳保温时间的延长均有利于提高脱碳量,而且提高反应温度有助于提高脱碳反应速率。铁碳合金薄带固态脱碳反应近似为一级反应,脱碳反应表观活化能为144.9kJ/mol。
In order to study the kinetics of the solid-phase decarburization reaction of iron-carbon alloy ribbons. The experiment decarburized the Fe-C alloy strip in a controlled atmosphere tube furnace with Ar-H2-H2O as the decarburization atmosphere. The iron-carbon alloy strip into the heating field heated to 1 020,1 080 and 1 140 ℃, and were decarbonization thermal insulation 0,10,30,50,60,70,80 and 90min. The results show that the diffusion of carbon to the reaction interface is the limiting part of the decarburization reaction. The decarburization temperature and decarburization holding time are both conducive to increase the amount of decarburization, and increasing the reaction temperature will help to improve the decarburization reaction rate. The solid state decarburization reaction of Fe-C alloy strip is approximately a first order reaction, and the apparent activation energy of decarburization reaction is 144.9kJ / mol.