铈对00Cr17铁素体不锈钢高温抗氧化性的影响

中国稀土学报, 2010, 28(3): 366-371.

铈对00Cr17铁素体不锈钢高温抗氧化性的影响

张辉 ^1, , 崔文芳 ^2, , 王建军 ^3, , 刘春明 ^4,

1.东北大学材料各向异性与织构教育部重点实验室,辽宁,沈阳,110004

2.东北大学材料各向异性与织构教育部重点实验室,辽宁,沈阳,110004

3.东北大学材料各向异性与织构教育部重点实验室,辽宁,沈阳,110004

4.东北大学材料各向异性与织构教育部重点实验室,辽宁,沈阳,110004

基金项目: 辽宁省科技攻关计划项目(2007221007) 长江学者和创新团队发展计划资助项目(IRT0713)

关键词： 00Cr17铁素体不锈钢 , Ce , 氧化动力学 , 氧化膜

Effect of Cerium on High Temperature Oxidation Resistance of 00Cr17 Ferrite Stainless Steel

利用电子分析天平、场发射扫描电镜、XRD衍射仪研究了不同Ce含量对00Cr17铁素体不锈钢高温抗氧化性的影响.结果表明:00Cr17钢中加入Ce后,钢的抗氧化性能得到提高,在1000℃以上时效果更加显著.氧化温度在700～1000℃范围内,随着Ce添加量的增加,氧化速率常数kp.减小,氧化激活能提高,氧化膜由Cr2O3单相组成,而氧化温度在1100℃时,实验钢的氧化膜由Cr2O3和Fe2O3两相组成,Ce减缓了Fe2O3相的形成速率.Ce改善00Cr17铁素体不锈钢抗氧性的主要原因是降低了氧化物的生长速率,提高了氧化膜的致密性,增强了氧化膜与基体的粘附性.

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