Hydrogen diffusion and trapping in nickel

Louthan, McIntyre R.; Donovan, James; Caskey, G.R.

doi:10.1016/0001-6160(75)90057-7

Cited by 89 publications

(16 citation statements)

References 14 publications

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“…The activation energies of IDP and GDP were estimated as 0.3 and 0.5 eV. These values are in the range of existing data on the nickel permeability: 0.13-0.48 eV for deuterium ion-and plasma-driven permeation [8,7,13], 0.49-0.58 eV for hydrogen gas-driven permeation [5,14].…”

Section: Nickelsupporting

confidence: 51%

The ion-driven permeation experiment PERMEX

Голубева

Mayer

Gasparyan

et al. 2009

Review of Scientific Instruments

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Section: Nickelsupporting

confidence: 51%

The ion-driven permeation experiment PERMEX

Голубева

Mayer

Gasparyan

et al. 2009

Review of Scientific Instruments

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“…Parameters in the relationship for the solubility of hydrogen in nickel (Eq. 2) were reported as S0 = 9.7x10 3 appm•(MPa) -1/2 and HS = 15.9 kJ•mol -1 [22,23]. With the exposure temperature and target hydrogen concentration fixed, the required gas fugacity was calculated from Eqs.…”

Section: Hydrogen Chargingmentioning

confidence: 99%

Grain-boundary engineering markedly reduces susceptibility to intergranular hydrogen embrittlement in metallic materials

et al. 2009

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The feasibility of using "grain-boundary engineering" techniques to reduce the susceptibility of a metallic material to intergranular embrittlement in the presence of hydrogen is examined. Using thermomechanical processing, the fraction of "special" grain boundaries was increased from 46 to 75% (by length) in commercially purity Nickel samples. In the presence of hydrogen concentrations between 1200 and 3400 appm, the high special fraction microstructure showed almost double the tensile ductility; also, the proportion of intergranular fracture was significantly lower and the Jc fracture toughness values were some 20 to 30% higher in comparison with the low special fraction microstructure. We attribute the reduction in the severity of hydrogen-induced intergranular embrittlement to the higher fraction of special grain boundaries which reduces the crack initiation site density.

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“…In acid electrolyte the formation of an ~-and a/3-phase for H in Ni was observed; in alkaline solution only the c~-phase was obtained [9]. Also trapping of hydrogen in nickel can occur as was observed by Louthan et al [10]. Hydrogen permeation experiments through nickel foils were carried out by Bockris et al [11] using an electrochemical technique.…”

Section: Introductionmentioning

confidence: 94%