The role of interfaces in the hydrogen embrittlement of nickel

Ashok, S.; Duquette, D. J.; Stoloff, N. S.; Verpoort, C.

doi:10.1016/0036-9748(81)90092-2

Cited by 9 publications

(3 citation statements)

References 6 publications

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“…I' [8][9][10][11][12] Assuming that the penetration of hydogen scales with ~]DHt where D~ is the lattice diffusion coefficient for hydrogen in nickel (-4 • 10 -1~ em 2 s-l, 28) and t is the 24 h charging period, a diffusion distance on the order of 0.06 mm is obtained. Its crosshead was driven by a stepper motor, with gearing that gave it the capacity to pull a 500 N load.…”

Section: Methodsmentioning

confidence: 99%

“…This was in part Paper 114 presented at the New Orleans, LA, Meeting of the Society, Oct. [10][11][12][13][14][15] 1993. The assistance of T. Barrera, R. Brose, S. Frost, G. Henderson, C. Hoover, J. Marcus, B. Nelson, E Ross, C. Su, and J. Uht is greatly appreciated.…”

Section: Acknowledgmentmentioning

confidence: 99%

“…12 HAC of nickel can occur transgranularly, often by quasicleavage and/or microvoid coalescence. These slow-strain-rate tensile tests revealed that the ductility of swaged Ni 200 rod was markedly decreased when it was tested at, or negative to, the Li/LiCl potential in 1.5M LiAICIJSOCI2.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Environmentally Assisted Cracking of Nickel Strip in LiAlCl4 / SOCl2

Wasynczuk

Quinzio

Bittner

1995

J. Electrochem. Soc.

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Constant extension rate tests (CERT) were used to evaluate the susceptibility of two cold-rolled nickel strip materials to environmentally assisted cracking (EAC) in 1.5M LiAICIJSOCI2. One strip material was made by a powder metallurgy (PM) process that started with carbonyl nickel. The other was cast and wrought (C&W). Both were 0.05 mm thick and cold-rolled to the three-quarter hard condition. The bulk impurity concentrations, grain structures, and mechanical properties of these two materials were similar. However, the C&W alloy was distinguished by a substantially higher bulk manganese content and oxygen-rich inclusions, a large fraction of which also contained sulfur. EAC of the PM alloy, manifested principally as intergranular fracture, occurred in samples that were polarized to -50, 0, and +200 mV (Li/LiCI), but not in ones that were freely corroding at +3.65 V (Li/LiCl). These results are consistent with EAC being caused by a mechanism involving zero-valent lithium, proposed by Scully et al. i In marked contrast to the PM alloy, the C&W alloy exhibited no susceptibility to Li-assisted cracking. In ancillary experiments, performed with samples that were cathodieally charged with hydrogen, only the PM alloy exhibited a high susceptibility to intergranular cracking. The present results indicate that subtle microstruetural differences may affect the reliability of Li/SOCI2 cells. Although the existing evidence is circumstantial, the results also suggest that lithium-assisted and hydrogen-assisted intergranular cracking have analogous sensitivities to grain boundary segregation of sulfur.) unless CC License in place (see abstract).

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Section: Methodsmentioning

confidence: 99%

Section: Acknowledgmentmentioning

confidence: 99%