nanotechnology-smart-materials-2018-tracks

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E u r o S c i C o n C o n f e r e n c e o n
Nanotechnology &
Smart Materials
Nano Research & Applications
ISSN 2471-9838
O c t o b e r 0 4 - 0 6 , 2 0 1 8
Am s t e r d a m , N e t h e r l a n d s
Nanotechnology & Smart Materials 2018
Page 52
ODS steel is one of the most potential materials for TBM (test blanket module)
structural application. But it faces the issues of brittle at roomtemperature and
tritium permeation. In this work, different content of N (in CrN, TiN and VN form)
was added in the matrix powder to develop a new type of ODS steel (N-ODS steel),
improve the toughness and hydrogen (deuterium, tritium) permeation resistance
property. The effect of different content and kind of nitride nano-particles on the
hydrogen permeability of N-ODS steel was studied. The N-ODS powder were
fabricated by mechanical alloying, followed with reduction in hydrogen, and then
sintered by spark plasma sintering at 1050°C for 10 min. After sintering, all the
specimens were normalized at 1050°C for 0.5h, and then furnace cooled to room
temperature. The TEM image showed that N-ODS steel is nanostructure and due
to addition of N, nanoscale particles of CrN (TiN, VN) and some nuclear/shell
structural precipitates were formed in the N-ODS steel. Electrochemical hydrogen
permeation technique was used to evaluate the hydrogen permeability of N-ODS
steel. The results reveal that the hydrogen diffusion coefficient decreased with the
increasing of content of N (in CrN form). Besides, different N sources (CrN, TiN,
VN) also have significant effects. The hydrogen diffusion coefficient of N-ODS
steel with 1% TiN was only half of diffusion coefficient of steel with 1% CrN and
steel with 1% VN. When the content of TiN increased, the hydrogen diffusivity
decreased further. The N-ODS steel with N in TiN form exhibits the best hydrogen
resistance property.
Biography
Jinping Suo has completed his PhD at 2000 from Beijing Iron
and steel General Institute of Material Science. He is a Professor
of Material Science at Huazhong University of Science and
Technology. He focuses on research of structural materials,
tritium resistance coatings and so on. He has published more
than 50 papers on Corrosion Science, Journal of Nuclear
Materials, Surface and Coatings Technology and other journals,
and also got several patents.
Effect of different nitride nano-particles
on the hydrogen permeability of N-ODS steel
Jinping Suo, Ying Zhang and Juexin Xu
State Key Laboratory of Mould Technology-HUST, PR China
Jinping Suo et al., Nano Res Appl Volume:4
DOI: 10.21767/2471-9838-C6-024