Effects of surface nanocrystallization on the corrosion behaviors of 316L and alloy 690

Li, Nana1,2; Shi, Sanqiang1,2; Luo, Jingli3; Lu, Jian4; Wang, Ning5

2017-01-15

10.1016/j.surfcoat.2016.11.052

SURFACE & COATINGS TECHNOLOGY   影响因子和分区

0257-8972

Surface mechanical attrition treatments (SMATs) were used to prepare nanostructured surface layers on alloys used in nuclear power plant steam generators (SGs). The effects of surface nanocrystallization on alloy corrosion behavior at room temperature and at 300 degrees C in a simulated SG environment were studied. At room temperature, the polarization curves indicated that with increasing SMAT duration, the corrosion potential of the samples shifted negatively from smaller to larger values, and alloy active dissolution rate and passive current density both increased. Nitriding treatment was used to improve the corrosion resistance. Compared with corrosion behavior observed at room temperature, corrosion resistance in the simulated SG condition was highly enhanced because the nano-sized-grain layer formed via SMAT provided a higher density of nucleation sites for the formation of a passive film and diffusion paths for Cr, leading to the rapid formation of a dense protective oxide layer. (C) 2016 Elsevier B.V. All rights reserved.

Surface nanocrystallization Passive film Nitriding Corrosion resistance Nuclear plant materials

SCI ; EI

英语

其他

National Natural Science Foundation of China[51271157]

Materials Science ; Physics

Materials Science, Coatings & Films ; Physics, Applied

WOS:000396184400028

ELSEVIER SCIENCE SA

20164903088317

Aluminum nitride ; Corrosion resistance ; Corrosive effects ; Nanocrystallization ; Nanocrystals ; Nitriding ; Nuclear fuels ; Nuclear power plants ; Steam generators ; Steam power plants

Heat Treatment Processes:537.1 ; Metals Corrosion:539.1 ; Corrosion Protection:539.2 ; Nuclear Power Plants:613 ; Steam Power Plants:614 ; Steam Power Plant Equipment and Operation:614.2 ; Nanotechnology:761 ; Organic Compounds:804.1 ; Solid State Physics:933

MATERIALS SCIENCE

Web of Science

1.Hong Kong Polytech Univ, Shenzhen Res Inst, Shenzhen 518057, Peoples R China
2.Hong Kong Polytech Univ, Dept Mech Engn, Hong Kong, Hong Kong, Peoples R China
3.Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB, Canada
4.City Univ Hong Kong, Hong Kong, Hong Kong, Peoples R China
5.Southern Univ Sci & Technol, Shenzhen 518055, Peoples R China

Li, Nana,Shi, Sanqiang,Luo, Jingli,et al. Effects of surface nanocrystallization on the corrosion behaviors of 316L and alloy 690[J]. SURFACE & COATINGS TECHNOLOGY,2017,309:227-231.

Li, Nana,Shi, Sanqiang,Luo, Jingli,Lu, Jian,&Wang, Ning.(2017).Effects of surface nanocrystallization on the corrosion behaviors of 316L and alloy 690.SURFACE & COATINGS TECHNOLOGY,309,227-231.

Li, Nana,et al."Effects of surface nanocrystallization on the corrosion behaviors of 316L and alloy 690".SURFACE & COATINGS TECHNOLOGY 309(2017):227-231.