Hydrogen Diffusivity and Hydride Formation in Rich-Zirconium Alloys Used in Nuclear Reactors

K.R.F. Silva; Dílson Silva dos Santos; A.F. Ribeiro; L.H. Almeida

doi:10.4028/www.scientific.net/DDF.297-301.722

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HomeDefect and Diffusion ForumDefect and Diffusion Forum Vols. 297-301Hydrogen Diffusivity and Hydride Formation in...

Hydrogen Diffusivity and Hydride Formation in Rich-Zirconium Alloys Used in Nuclear Reactors

Abstract:

Hydrogen gas permeation tests were performed on two Nb-modified Zr alloys used in the nuclear industry. The influence of the microstructure on hydrogen diffusivity in each alloy is discussed and a mechanism of hydride formation is presented. The hydrogen binding energy for different trap sites was calculated in the M5 alloy as well as hydrogen diffusivity value in the Zirlo alloy at 300oC, D = 2.5 x 10-13 m2/s.

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Defect and Diffusion Forum (Volumes 297-301)

Pages:

722-727

DOI:

https://doi.org/10.4028/www.scientific.net/DDF.297-301.722

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Online since:

April 2010

Authors:

K.R.F. Silva, Dílson Silva dos Santos, A.F. Ribeiro, L.H. Almeida

Keywords:

Hydrogen Diffusivity, Hydrogen Trap, Zirconium Alloy

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References

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