Corrosion behavior of chromium oxide based ceramics in supercritical water (SCW) environments

被引:17
|
作者
Dong, Ziqiang [1 ]
Chen, Weixing [1 ]
Zheng, Wenyue [2 ]
Guzonas, Dave [3 ]
机构
[1] Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB, Canada
[2] MTL NRCan, Ottawa, ON, Canada
[3] Atom Energy Canada Ltd, Chalk River Labs, Chalk River, ON K0J 1J0, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
Ceramic; Weight loss; SEM; Intergranular corrosion; HIGH-TEMPERATURE OXIDATION; REACTIVE ELEMENTS; AQUEOUS-SOLUTIONS; CR2O3; ALLOYS; SEGREGATION; CHEMISTRY; CARBIDE; OXYGEN; CR;
D O I
10.1016/j.corsci.2012.08.048
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The stability of chromium oxide (Cr2O3) ceramics with various amounts of yttrium oxide (Y2O3) or yttrium oxide-stabilized zirconium oxide (YSZ - 8 mol.% Y2O3) added was evaluated in static and flowing supercritical water (SON) environments. It was found that the corrosion behavior of Cr2O3-based ceramics was affected by their morphologies as well as SCW test variables. The results of loop tests showed that Cr2O3-based ceramics were stable at 650 degrees C in flowing SCW with low to moderate oxygen concentration (8 ppb to 8 ppm). However, these ceramics suffered obvious degradation when exposed to SON with higher oxygen concentrations (4 vol.% hydrogen peroxide). (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码:461 / 471
页数:11
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