Fe-Si合金的高温氧化行为  

High Temperature Behavior of Fe-Si Alloy

作　　者：孙彬[1,2] 尤宏广 郝明欣 王孝伟 张朋飞 于茜 SUN Bin;YOU Hongguang;HAO Mingxin;WANG Xiaowei;ZHANG Pengfei;YU Qian(College of Mechanical Engineering,Shenyang University,Shenyang 110044,China;Hansteel Company,HBIS Group,Handan 056000,China;Hanbao Hot-Rolling Mill of Hansteel Company,HBIS Group,Handan 056015,China)

机构地区：[1]沈阳大学机械工程学院,辽宁沈阳110044 [2]河钢集团邯钢公司,河北邯郸056000 [3]河钢集团邯钢公司邯宝热轧厂,河北邯郸056015

出　　处：《沈阳大学学报（自然科学版）》2019年第4期263-267,共5页Journal of Shenyang University：Natural Science

基　　金：国家自然科学基金青年基金资助项目(51301111);辽宁省自然科学基金资助项目(201602523)

摘　　要：通过管式炉对Fe-0.3Si钢和Fe-0.6Si钢进行高温氧化实验.结果表明:当氧化温度为1150和1200℃时,2个实验钢种的氧化铁皮结构都是双层结构,分别是外层和内层结构.内层结构是由FeO和Fe2SiO4组成,而外层是由Fe3O4和FeO组成的铁的氧化物组成的.同时在Fe2SiO4层中发现点状和棒状的FeO共晶组织.Fe2SiO4是由SiO2和FeO的固相反应形成的.在2种氧化温度下,Fe2SiO4均出现熔化现象,并且向氧化铁皮内部和基体内部扩散,说明在高温状态下形成的Fe2SiO4的熔点偏离了理论熔点温度.The high temperature oxidation tests of Fe-0.3Si and Fe-0.6Si steels were performed in the tube furnace. The results show that when the oxidation temperature is 1 150 ℃ and 1 200 ℃,the iron oxide peel structure of the two experimental steels is a double-layer structure,which is the outer layer and the inner. The inner layer structure is composed of FeO and Fe2SiO4,and the outer layer is composed of iron oxides which is the composition of Fe3O4 and FeO. Meanwhile,spot-like and rod-like FeO eutectic structures are found in the Fe2SiO4 layer. Fe2SiO4 is formed by a solid phase reaction of SiO2 and FeO. At both oxidation temperatures,the melting Fe2SiO4 has diffused into the outer Fe-rich oxide and substrate alloy,indicating that the melting point of Fe2SiO4 formed at high temperatures deviated from the theoretical melting point.

关 键 词：氧化铁皮 硅酸亚铁 熔点 固相反应 合金 

分 类 号：TG172.3[金属学及工艺—金属表面处理]