摘要
为了研究CO-CO2气氛条件对Fe-C合金薄带气—固反应脱碳的影响,试验采用高碳域、1 mm厚的Fe-C合金薄带为研究对象,在Ar-CO-CO2弱氧化气氛条件下进行气—固反应脱碳。结果表明:在一定条件下,增加混合气体流量可以有效提高薄带表面氧覆盖率,有利于脱碳反应进行,当混合气体流量为850 mL·min-1时,可以获得较好的脱碳效果;通过对不同PCO2/PCO下脱碳后薄带表面XRD检测分析,当脱碳温度为1 413 K时,为保证脱碳而铁不氧化,混合气氛PCO2/PCO不宜超过0.37;其他条件一定时,CO含量为25%(体积比)时,薄带脱碳效果最好;在一定范围内升高脱碳温度和延长脱碳时间都有利于铁碳合金薄带脱碳。
To investigate influence of CO-CO2 mixture on the gas-solid decarburization reaction of Fe-C alloy sheet,the high carbon domain Fe-C alloy sheets with 1 mm the thickness was used to conduct decarburization reaction in weak oxidizing atmosphere(Ar-CO-CO2).The results show that the coverage rate of oxygen on surface of Fe-C alloy sheet decreases with increasing the flow rate of mixed gas.The higher coverage rate of oxygen is beneficial for decarburization.XRD analysis on decarburized surface shows that PCO2/PCO shall be less than 0.37 to make sure less Fe being oxidized in 1 413 K.At the given conditions,when the volume ratio of CO is 25%,the better decarburization effect can be achieved.Increasing the decarburization temperature and/or prolonging the decarburization time to a certain degree can improve the decarburization effect.
作者
周美洁
洪陆阔
艾立群
侯耀斌
周朝刚
Zhou Meijie;Hong Lukuo;Ai Liqun;Hou Yaobin;Zhou Chaogang(College of Metallurgy and Energy,North China University of Science and Technology,Tangshan 063210,Hebei,China)
出处
《钢铁钒钛》
CAS
北大核心
2020年第1期100-104,112,共6页
Iron Steel Vanadium Titanium
基金
河北省自然科学基金资助项目(E2018209284).
关键词
铁碳合金
薄带
脱碳
二氧化碳
气固反应
Fe-C alloy
sheet
decarburization
CO2
gas-solid reaction
