烧结机篦条材料的显微组织与抗氧化性能研究  

Study on Microstructure and Oxidation Resistance of Materials for Sintering Machine Grate Bar

作　　者：贵永亮[1] 谢赛[1] 宋春燕[1] 杨丽[1] 刘瑾[1] 

机构地区：[1]河北联合大学冶金与能源学院现代冶金技术河北省重点实验室,河北唐山063009

出　　处：《铸造》2014年第10期1056-1059,共4页Foundry

基　　金：河北省自然科学基金-钢铁联合基金资助项目(E2014209213);河北省高等学校科学研究计划项目(Q2012076);河北省大学生创新训练计划项目(201310081039)

摘　　要：借助OM、SEM、EDS和XRD研究了烧结篦条材料的显微组织,并且在实验室考查了其高温抗氧化性能.结果表明,高铬铸铁篦条主要由树枝状奥氏体以及由马氏体和碳化物构成的共晶组织组成.在500～900℃的温度区间内,高铬铸铁的抗氧化性能较好,但随着加热温度的升高,抗氧化性能逐渐变差,并且在900℃的恒定温度下,高铬铸铁抗氧化性随着保温时间的延长而降低.Microstructure of grate bar of sintering machine made by high-chromium cast iron was observed with OM, SEM, EDS and XRD. The oxidation resistance at high-temperature was evaluated in laboratory. The results show that microstructure of high chromium cast iron materials for sintering machine grate bar mainly consists of primary austenite dendrite, eutectic martensite and carbide. High chromium cast iron has excellent oxidation resistant property from 500 ℃ to 900 ℃. However, the oxidation resistance of high chromium cast iron is worsened as the rising of temperature and increasing of holding time at 900℃.

关 键 词：烧结机篦条 高铬铸铁 显微组织 氧化 

分 类 号：TG143[一般工业技术—材料科学与工程]