Characterization of hydrogen permeation through a corrosion-resistant zinc-nickel-phosphorus alloy
Hydrogen permeation characteristics of a new Zn-Ni-P alloy were studied and compared with that of a Zn-Ni alloy. The Zn-Ni-P alloy was deposited from an acid sulfate both containing 0.5 M nickel sulfate (NiSO{sub 4}), 0.2 M zinc sulfate (ZnSO{sub 4}), 0.5 M sodium sulfate (Na{sub 2}SO{sub 4}), and 100 g/L sodium hypophosphite (NaH{sub 2}PO{sub 2}) at pH 3. The permeation characteristics of the alloy were studied and compared qualitatively with that of Zn-Ni alloy under cathodically polarized and corroding conditions. The Zn-Ni-P alloy had better permeation inhibition characteristics in terms of permeation efficiency through the alloy. The Lyer-Pickering-Zamanzadeh (IPZ) model was used to quantitatively estimate the various kinetic parameters associated with hydrogen permeation for Zn-Ni-P alloy under polarized conditions. The Zn-Ni-P alloy had superior permeation inhibition properties compared to the Zn-Ni alloy.
- Research Organization:
- Univ. of South Carolina, Columbia, SC (US)
- OSTI ID:
- 20034199
- Journal Information:
- Corrosion (Houston), Vol. 56, Issue 3; Other Information: PBD: Mar 2000; ISSN 0010-9312
- Country of Publication:
- United States
- Language:
- English
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