新型Cr19Ni28Ti合金空气中高温氧化的研究  

High temperature oxidation behavior of new Cr19Ni28Ti alloy in atmospheres

作　　者：程晓农[1] 姜杨[1] 李冬升[1] 戴起勋[1] 邱宇[1] 高仕渊[1] 王植栋[1] 

机构地区：[1]江苏大学材料科学与工程学院,江苏镇江212000

出　　处：《功能材料》2013年第12期1792-1795,共4页Journal of Functional Materials

基　　金："十二五"国家高技术研究发展计划(863计划)重大资助项目(2012AA03A501);江苏大学高级专业人才基金资助项目(12JDG066);省级重点实验室开放课题资助项目(kjsmcx1004)

摘　　要：利用增重法研究了新型Cr19Ni28Ti合金在700、800和900℃空气中的高温氧化行为,绘制了高温氧化动力学增重曲线,并利用XRD、SEM和EDS对氧化膜进行了表征。结果表明,700、800和900℃氧化增重分别为0.07、0.1和0.45mg/cm2,具有良好的抗氧化性;高温氧化动力学曲线符合抛物线规律。700℃氧化100h的氧化膜主要由Mn1.5Cr1.5O4、Fe(Ni)Cr2O4和Cr2O3组成;800℃氧化后增加了产物Fe2.95-Si0.05O4;900℃氧化Ti已经开始向金属表面扩散,并与氧发生反应,生成了TiO2。The high temperature oxidation properties of the new Cr19Ni28Ti alloy at 700,800,900℃ in atmos- pheres were investigated by weighting method. Draw the high temperature oxidation kinetics weight gain curve. Investigate the structural changes of the oxide films, X ray diffraction （XRD）. Scanning electron microscopy （SEM）, energy dispersive spectrometer （EDS） analyses were used. The results show that weight gain at 700, 800,900℃ are respectively 0.07,0. 1 and 0.45mg/cm2. The new Cr19Ni28Ti alloy has good oxidation resist- ance. The parabolic type oxidation dynamic curve was observed. The main oxidations contain Mnl.5 CrL sO4, Fe （Ni）Cr204 and Cr203 in 700℃. Oxidations in 800℃ increase FeagsSi0.0504. Ti has diffused to the surface and reacted with oxygen in 900℃.

关 键 词：新型Cr19Ni28Ti合金 动力学 高温氧化 氧化膜 

分 类 号：TG142.1[一般工业技术—材料科学与工程]