Corrosion behavior of ferritic ODS steel prepared by adding YH2 nanoparticles in supercritical water at 600 °C

被引：11
作者：
Bai, Zhonglian [1 ]
Wang, Linbo [1 ]
Wang, Chenxi [1 ]
Gao, Wenhua [2 ]
Zhang, Lefu [2 ]
Liu, Tong [1 ]
机构：
[1] Beihang Univ, Lab Aerosp Mat & Performance, Minist Educ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China
[2] Shanghai Jiao Tong Univ, Sch Nucl Sci & Engn, 800 Dongchuan Rd, Shanghai 200240, Peoples R China
来源：
PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL | 2018年 / 28卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Supercritical water; ODS steel; Corrosion behavior; Microstructure; DISPERSION-STRENGTHENED STEEL; OXIDE PARTICLES; RESISTANCE; OXIDATION; ALLOYS; LBE; TEM;
D O I：
10.1016/j.pnsc.2018.07.008
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The corrosion behavior of the ferritic oxide dispersion strengthened (ODS) steel (14Cr-3Al-2W-0.1Ti) prepared by adding YH2 nanoparticles (NPs) was investigated in supercritical water (SCW) at 600 degrees C for 1500 h. The mass gain of the ODS steel (215.5 mg/dm(2)) was lower than that of SUS430 steel (357.2 mg/dm(2)). A dual oxide layer generated on the surface of ODS steel after corrosion in SCW. The outer layer was composed of Fe2O3 and Fe3O4, while the inner layer composed of the spinel-type FeCr2O4 together with Al2O3. The generation of Y2Ti2O7 NPs in the ODS steel by adding YH2 NPs prohibits the formation of Y-Al-O particles and leaves more Al available to form a continuous protective oxide scale to improve the corrosion resistance. Moreover, the Y2Ti2O7 NPs act as efficient barriers to suppress the outward diffusion of metal atoms. This novel ODS steel shows potential applications in supercritical water.
引用
收藏
页码：505 / 509
页数：5
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