Oxidation behavior of rare earth oxide-coated Fe20Cr and Fe20Cr5Al alloys

被引：8
|
作者：
Fernandes, Stela M. C. [1 ]
Correa, Olandir V. [1 ]
Ramanathan, Lalgudi V. [1 ]
机构：
[1] IPEN CNEN SP, Sao Paulo, Brazil
来源：
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2011年 / 106卷 / 02期
关键词：
Iron-chromium alloy; Oxidation; Rare earth oxides;
D O I：
10.1007/s10973-011-1563-0
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
This article presents the influence of surface additions of nanocrystalline rare earth (RE) oxides CeO2, La2O3, and CeO2 + La2O3 on the isothermal oxidation behavior of Fe20Cr and Fe20Cr5Al at 1000 A degrees C. Thermogravimetric studies revealed parabolic kinetics in all cases and the scale thickness on specimen surfaces varied with the nature of RE oxide. The oxidation resistance of specimens coated with two RE oxides was significantly higher than those coated with either one of the two oxides. The marked increase in the oxidation resistance of the alloys coated with two RE oxides is due to optimization of RE ion radius and RE oxide grain size/shape.
引用
收藏
页码：541 / 543
页数：3
相关论文
共 50 条
  • [1] Oxidation behavior of rare earth oxide-coated Fe20Cr and Fe20Cr5Al alloys
    Stela M. C. Fernandes
    Olandir V. Correa
    Lalgudi V. Ramanathan
    Journal of Thermal Analysis and Calorimetry, 2011, 106
  • [2] Sulfidation behavior of Fe20Cr alloys
    Pillis, MF
    Ramanathan, LV
    SURFACE ENGINEERING: IN MATERIALS SCIENCE II, 2003, : 319 - 327
  • [3] High temperature oxidation resistance of rare earth chromite coated Fe-20Cr and Fe-20Cr-4Al alloys
    Pillis, Marina Fuser
    Ramanathan, Lalgudi Venkataraman
    2007, Universidade Federal de Sao Carlos, C.P. 676, Sao Carlos SP, 13565-905, Brazil (10)
  • [4] High temperature oxidation of UHP-based Fe20Cr5Al alloys
    Mennicke, C
    Schumann, E
    Al-Badairy, H
    Tatlock, GJ
    Gobel, M
    Borchardt, G
    Le Coze, J
    PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 1998, 167 (02): : 419 - 426
  • [5] Cyclic oxidation resistance of rare earth oxide gel coated Fe-20Cr alloys
    Instituto de Pesquisas Energéticas e Nucleares - IPEN, Av. Prof. Lineu Prestes, 2242, 05508-000 São Paulo - SP, Brazil
    Mater. Res., 2007, 3 (321-324):
  • [6] Influence of surface deposited nanosized rare earth oxide gel morphology on cyclic oxidation behavior of Fe20Cr alloy
    Fernandes, SMC
    Ramanathan, LV
    SURFACES AND INTERFACES IN NANOSTRUCTURED MATERIALS AND TRENDS IN LIGA, MINIATURIZATION, AND NANOSCALE MATERIALS, 2004, : 183 - 192
  • [7] Anisotropy in Mechanical Properties and Fracture Behavior of an Oxide Dispersion Fe20Cr5Al Alloy
    J. Chao
    C. Capdevila
    Metallurgical and Materials Transactions A, 2014, 45 : 3767 - 3780
  • [8] Anisotropy in Mechanical Properties and Fracture Behavior of an Oxide Dispersion Fe20Cr5Al Alloy
    Chao, J.
    Capdevila, C.
    METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2014, 45A (09): : 3767 - 3780
  • [9] Influence of rare earth oxide coatings on oxidation behaviour of Fe-20Cr alloys
    Fernandes, SMC
    Ramanathan, LV
    SURFACE ENGINEERING, 2000, 16 (04) : 327 - 332
  • [10] Two calculations concerning the critical aluminium content in Fe20Cr5Al alloys
    Strehl, G
    Beaven, R
    Lesage, B
    Borchardt, G
    MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION, 2005, 56 (11): : 778 - 784
12345