Corrosion behavior of ferritic/martensitic steel P92 in supercritical water

被引：138
作者：
Yin, Kaiju [1 ]
Qiu, Shaoyu [1 ]
Tang, Rui [1 ]
Zhang, Qiang [1 ]
Zhang, Lefu [2 ]
机构：
[1] Nucl Power Inst China, Natl Key Lab Nucl Fuel & Mat, Chengdu 610042, Peoples R China
[2] Shanghai Jiao Tong Univ, Sch Nucl Sci & Engn, Shanghai 200240, Peoples R China
来源：
JOURNAL OF SUPERCRITICAL FLUIDS | 2009年 / 50卷 / 03期
关键词：
Ferritic/martensitic steel; Supercritical water; Oxidation; Oxide scale; STAINLESS-STEEL; OXIDATION; ALLOYS; HCM12A; DAMAGE; SCC; T91;
D O I：
10.1016/j.supflu.2009.06.019
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The corrosion behavior of a ferritic/martensitic steel P92 exposed to supercritical water (SCW) at 500-600 degrees C and 25 MPa was investigated by means of gravimetry, scanning electron microscope/energy dispersive X-ray spectroscopy and X-ray diffraction. A dual-layered oxide scale, which was mainly composed of an outer magnetite layer and an inner magnetite/spinel-mixed layer, formed on P92. The initial oxide scale was rather porous, while the porosity decreased with an increase of exposure time. Oxidation rates at three different temperatures followed the parabolic law. The oxidation at 600 degrees C was so severe that cracks occurred along grain boundaries in the oxide scale. A probable corrosion mechanism for P92 exposed in SCW was proposed based on the above observations, focusing on oxide formation by oxygen absorption without any metallic dissolution. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：235 / 239
页数：5
相关论文
共 30 条
  • [1] ALLEN TR, 2002, WORKSH HIGH TEMP MAT
  • [2] Oxidation of ferritic-martensitic alloys T91, HCM12A and HT-9 in supercritical water
    Ampornrat, Pantip
    Was, Gary S.
    [J]. JOURNAL OF NUCLEAR MATERIALS, 2007, 371 (1-3) : 1 - 17
  • [3] [Anonymous], 2001, HIGH CHROMIUM FERRIT
  • [4] [Anonymous], 2002, GIF00200
  • [5] Damage and lifetime of fossil power plant components
    Bethmont, M
    [J]. MATERIALS AT HIGH TEMPERATURES, 1998, 15 (3-4) : 231 - 238
  • [6] Surface film electrochemistry of austenitic stainless steel and its main constituents in supercritical water
    Betova, Iva
    Bojinov, Martin
    Kinnunen, Petri
    Penttila, Sami
    Saario, Timo
    [J]. JOURNAL OF SUPERCRITICAL FLUIDS, 2007, 43 (02) : 333 - 340
  • [7] BRADFORD SA, 1987, METALS HDB, V13, P68
  • [8] Corrosion behavior of ferritic-martensitic steel T91 in supercritical water
    Chen, Yun
    Sridharan, Kumar
    Allen, Todd
    [J]. CORROSION SCIENCE, 2006, 48 (09) : 2843 - 2854
  • [9] Characterization of oxide films grown on 316L stainless steel exposed to H2O2-containing supercritical water
    Gao, Xin
    Wu, Xinqiang
    Zhang, Zhaoen
    Guan, Hui
    Han, En-hou
    [J]. JOURNAL OF SUPERCRITICAL FLUIDS, 2007, 42 (01) : 157 - 163
  • [10] Role of grain boundary engineering in the SCC behavior of ferritic-martensitic alloy HT-9
    Gupta, G.
    Ampornrat, P.
    Ren, X.
    Sridharan, K.
    Allen, T. R.
    Was, G. S.
    [J]. JOURNAL OF NUCLEAR MATERIALS, 2007, 361 (2-3) : 160 - 173
123