Influence of partial hydride formation/decomposition on the mechanical properties of palladium

Anderton, Christian A.; Strother, Natasha; Poté, John; Foley, R.; Rebeiz, Karim S.; Nesbit, Steven M.; Craft, Andrew

doi:10.1016/1359-6462(96)00251-5

Cited by 7 publications

(7 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The amount of pile-up present in the hydrided sample is qualitatively observed to be slightly reduced, compared to the annealed sample. This suggests that some work hardening has occurred due to the strain from the phase transformation and decreased the E r /s y ratio [21], which is consistent with observations of Anderton et al [10].…”

Section: Single Phase Specimenssupporting

confidence: 81%

“…These treatments only allow the b / a transformation to occur, which creates high dislocation densities without producing gross deformation from the a / b transformation. The simplest form of this treatment (cycles of supercritical full conversion to b, followed by complete hydrogen removal) yields results similar to those reported by Anderton et al [10]. However, it reportedly takes w30 cycles of this treatment (which does not involve the a / b transformation) to induce the same changes as one full a / b / a cycle.…”

Section: Introductionsupporting

confidence: 77%

“…The effect of partial a / b / a transformations were studied by Anderton et al [10], who loaded samples to various H:Pd ratios, then removed the hydrogen in vacuo at a slightly elevated temperature. They observed increases in strength and hardness, and reductions in ductility, as the hydrogen content was raised.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Nanoindentation of palladium–hydrogen

Wheeler

Clyne

2012

International Journal of Hydrogen Energy

View full text Add to dashboard Cite

Section: Single Phase Specimenssupporting

confidence: 81%

Section: Introductionsupporting

confidence: 77%

See 1 more Smart Citation

Nanoindentation of palladium–hydrogen

Wheeler

Clyne

2012

International Journal of Hydrogen Energy

View full text Add to dashboard Cite

“…Mechanical deformations are caused by the stress imposed on the Pd lattice by the 3.5% lattice expansion associated with the α → β phase transition for Pd hydride . Undoubtedly, these stresses coupled with the embrittlement of the Pd lattice associated with exposure to H 2 , were also responsible for the cracking observed in the Pd films prepared here. As discussed below, these cracks did not contribute to the function of type 3 sensors because they did not completely traverse the μ-channel (thereby forming a break junction).…”

Section: Resultsmentioning

confidence: 81%

Multimode Detection of Hydrogen Gas Using Palladium-Covered Silicon μ-Channels

et al. 2003

View full text Add to dashboard Cite

Palladium was electrodeposited onto lithographically patterned Si(100) "micro-channels" with dimensions of 2 microm (width) x 100 microm (length). The properties of these Pd-covered Si micro-channels for detecting dihydrogen gas were then evaluated. Pd electrodeposition was carried out under conditions favoring an instantaneous nucleation and growth mechanism. This strategy produced size-similar Pd particles at a coverage of (4-6) x 10(9) cm(-2) within the confines of the Si micro-channel. When the mean particle radius, ro, was smaller than a critical value (ro < rc = 70-85 nm), each Pd particle was well separated on the surface from adjacent particles, on average, and no response to H2 gas attributable to the micro-channel was observed. As Pd particles were grown larger, to a mean radius of ro approximately equal to rc, adjacent particles on the surface touched and the electrical resistance of the micro-channel dropped by several orders of magnitude. These "type 2" H2 sensors exhibited a rapid (< 1 s), reversible decrease in their resistance in response to exposure to H2 above 0.5%, but a minimum resistance was observed at 1-2%, and a resistance increase was seen at higher H2 concentration. This complex behavior resulted from the existence of three mechanisms for charge transport across the micro-channel. If still larger quantities of Pd were deposited, the Pd particle ensemble coalesced into an electrically continuous film. These "type 3" sensors became more resistive in the presence of H2, not more conductive as seen for sensors of types 1 and 2, but the amplitude of this response was smaller than seen for type 2 sensors.

show abstract

“…Anderton und Mitarbeiter haben eine Abhängigkeit der mechanischen Eigenschaften von der maximalen Wasserstoffkonzentration beim Zyklieren in Palladium nachgewiesen[And96]. Der Anstieg der mechanischen Härte mit dem Grad des Zyklierens lässt auf eine entsprechende Zunahme der Versetzungsdichte schließen.…”

unclassified

Segregation von Wasserstoff und Deuterium an Versetzungen in Palladium

Maxelon¹

View full text Add to dashboard Cite

Influence of partial hydride formation/decomposition on the mechanical properties of palladium

Cited by 7 publications

References 4 publications

Nanoindentation of palladium–hydrogen

Nanoindentation of palladium–hydrogen

Multimode Detection of Hydrogen Gas Using Palladium-Covered Silicon μ-Channels

Segregation von Wasserstoff und Deuterium an Versetzungen in Palladium

Contact Info

Product

Resources

About