篦板用新型节Ni双相耐热铸钢的高温氧化行为  

High Temperature Oxidation Behavior of New Type Low Ni Dual-Phase Heat Resistant Cast Steel for Grate Plate

作　　者：高志喆 潘晓坤 王兴锋 张朝磊 韦思明 陈小艳 GAO Zhi-zhe;PAN Xiao-kun;WANG Xing-feng;ZHANG Chao-lei;WEI Si-ming;CHEN Xiao-yan(Dagushan Pelleting Plant of Anshan Group Co.,Ltd.,Anshan 114004,Liaoning,China;School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]鞍山钢铁集团有限公司大孤山球团厂,辽宁鞍山114004 [2]北京科技大学材料科学与工程学院,北京100083

出　　处：《铸造》2023年第8期986-990,共5页Foundry

摘　　要：针对一种篦板用新型节Ni双相耐热铸钢,采用连续增重法研究了其在900℃下的氧化动力学与氧化膜结构,并阐明了氧化膜的生长机制。新型节Ni双相耐热钢在900℃时抗氧化性能达到、甚至超过了奥氏体耐热钢的抗氧化性,氧化动力学曲线呈现抛物线规律。氧化膜包括4层结构,从基体向外方向依次为SiO_(2)、MnCr_(2)O_(4)、Cr_(2)O_(3)、MnCr_(2)O_(4)。Mn元素的迁移使得双相耐热铸钢氧化层附近的铁素体比例增加。The oxidation kinetics and film structure of a new type of lowNi dual-phase heat-resistant caststeel for grate plates at 900℃were studied by the continuous weight gain method,and the growth mechanism of the oxide film was clarified.The oxidation resistance of the new-type lowNidual-phase heat-resistant caststeelat 900℃reachedtheoxidation resistance of austenitic heat-resistant steel,and reached the level of complete oxidation resistance.The oxidation kinetics curve showed a parabolic law.The oxide film included four layers,which were SiO_(2),MnCr_(2)O_(4),Cr_(2)O_(3),and MnCr_(2)O_(4)in order from the matrix to the outside.The migration of Mn increased the proportion of ferrite near the oxide layer of dual-phase heat-resistant caststeel.

关 键 词：双相耐热钢 高温氧化 氧化膜结构 篦板 

分 类 号：TG142.73[一般工业技术—材料科学与工程]