Acta Metallurgica Sinica (English Letters) >
Effect of Cerium on High-Temperature Oxidation Resistance of 00Cr17NbTi Ferritic Stainless Steel
Received date: 2014-04-04
Revised date: 2014-05-15
Online published: 2014-07-18
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 Cr2O3 layer. 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.
Key words： Ferritic stainless steel; Oxidation; Cerium oxides; Cavity
Xin Li , Jun Shu , Liqing Chen , Hongyun Bi . Effect of Cerium on High-Temperature Oxidation Resistance of 00Cr17NbTi Ferritic Stainless Steel[J]. Acta Metallurgica Sinica (English Letters), 2014 , 27(3) : 501 -507 . DOI: 10.1007/s40195-014-0079-6
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