Effect of Cerium on High-Temperature Oxidation Resistance of 00Cr17NbTi Ferritic Stainless Steel
Effect of Cerium on High-Temperature Oxidation Resistance of 00Cr17NbTi Ferritic Stainless Steel
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DOI：
10.1007/s40195-014-0079-6
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发表时间：
2014-06
期刊：
影响因子：
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通讯作者：
Xin Li;J. Shu;Liqing Chen;H. Bi
中科院分区：
文献类型：
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作者：
Xin Li;J. Shu;Liqing Chen;H. Bi
研究了添加铈对00 Cr 17 NbTi铁素体不锈钢在1,000 °C空气中恒温氧化100 h的影响。结果表明，铈的加入可以细化铁素体不锈钢的晶粒，促进铬的扩散，降低铬形成Cr2 O3保护层的临界浓度。随着铈添加量的增加，氧化物颗粒变小，从而提高了氧化层的断裂强度和抗剥落性能。随着铈含量的增加，通过氧化层的输运机制由金属向外输运转变为以氧向内输运为主，从而降低了00 Cr 17 NbTi铁素体不锈钢的氧化速率，提高了氧化膜的粘附性。
The influence of cerium addition on the isothermal oxidation behavior of 00Cr17NbTi ferritic stainless steel was studied at temperature up to 1,000 °C for 100 h in air. The results show that cerium additions can reduce the grain size of this ferritic stainless steel, improve the diffusion of chromium and decrease the critical concentration of chromium to form protective Cr2O3layer. With the increasing of cerium addition, the oxide particles become smaller and this can increase the rupture strength and spalling resistance of oxide layers. The transport mechanism through the oxide layer is varied from metal transport outward from steel to principally oxygen transport inward with the increase of cerium content, which leads to the lower oxidation rate and the better scale adherence of 00Cr17NbTi ferritic stainless steel.