Factors influencing the tensile strength, hardness, and ductility of hydrogen-cycled palladium

Dillon, Erik; Jimenez, Gilberto; Davie, Andrew; Bulak, Joseph; Nesbit, Steven M.; Craft, Andrew

doi:10.1016/j.msea.2009.07.036

Cited by 22 publications

(14 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Two different mechanisms of plasticity evolution are common in hydrogen-treated metals: hydrogen embrittlement [52–53] and hydrogen-enhanced localised plasticity [54]. In a simplistic view, hydrogen embrittlement evolves as a result of dislocations introduced by interstitial hydrogen atoms, which remain in the crystal lattice and hinder dislocation movement, even after complete hydrogen desorption in an ideal lattice.…”

Section: Discussionmentioning

confidence: 99%

Hydrogen-induced plasticity in nanoporous palladium

Gößler

Steyskal

Stütz

et al. 2018

Beilstein J. Nanotechnol.

View full text Add to dashboard Cite

The mechanical strain response of nanoporous palladium (npPd) upon electrochemical hydrogenation using an in situ dilatometric technique is investigated. NpPd with an average ligament diameter of approximately 20 nm is produced via electrochemical dealloying. A hydrogen-induced phase transition from PdHβ to PdHα is found to enable internal-stress plasticity (or transformation-mismatch plasticity) in nanoporous palladium, which leads to exceptionally high strains without fracture as a result of external forces. The high surface stress in the nanoporous structure in combination with the internal-stress plasticity mechanism leads to a peculiar strain response upon hydrogen sorption and desorption. Critical potentials for the formation of PdHα and PdHβ in npPd are determined. The theoretical concepts to assess the plastic strain response of nanoporous samples are elucidated, taking into account characteristics of structure and deformation mechanism.

show abstract

Section: Discussionmentioning

confidence: 99%

Hydrogen-induced plasticity in nanoporous palladium

Gößler

Steyskal

Stütz

et al. 2018

Beilstein J. Nanotechnol.

View full text Add to dashboard Cite

show abstract

“…Changes were also reported in the hardness, with increases apparently resulting from both a / b and b / a transformations. Recent work has furthered this [6] and studied the mechanical effects of the cycling temperature [7,8]. The report of reduced stiffness was confirmed by a more recent study [9] based on using micro-cantilevers to measure resonance frequencies under a controllable hydrogen atmosphere.…”

Section: Introductionmentioning

confidence: 85%

Nanoindentation of palladium–hydrogen

Wheeler

Clyne

2012

International Journal of Hydrogen Energy

View full text Add to dashboard Cite

“…In order to perform the work, a benchmark reaction on a simple, yet functionalized substrate, ethyl cinnamate was selected (Figure 1). This synthesis has already been carried out in different reactor types, such as the H-Cube (Dillon et al, 2009), allowing an easy comparison between methods (O'Brien et al, 2011;Cossar et al, 2015;Kobayashi et al, 2015;Kobayashi et al, 2015;Rathi et al, 2016;Ramezani and Abolhasani. 2020;Yu et al, 2020).…”

Section: Choice Of Reactionmentioning

confidence: 99%

Continuous Hydrogenation: Triphasic System Optimization at Kilo Lab Scale Using a Slurry Solution

et al. 2021

View full text Add to dashboard Cite

Despite their widespread use in the chemical industries, hydrogenation reactions remain challenging. Indeed, the nature of reagents and catalysts induce intrinsic safety challenges, in addition to demanding process development involving a 3-phase system. Here, to address common issues, we describe a successful process intensification study using a meso-scale flow reactor applied to a hydrogenation reaction of ethyl cinnamate at kilo lab scale with heterogeneous catalysis. This method relies on the continuous pumping of a catalyst slurry, delivering fresh catalyst through a structured flow reactor in a continuous fashion and a throughput up to 54.7 g/h, complete conversion and yields up to 99%. This article describes the screening of equipment, reactions conditions and uses statistical analysis methods (Monte Carlo/DoE) to improve the system further and to draw conclusions on the key influential parameters (temperature and residence time).

show abstract

Factors influencing the tensile strength, hardness, and ductility of hydrogen-cycled palladium

Cited by 22 publications

References 34 publications

Hydrogen-induced plasticity in nanoporous palladium

Hydrogen-induced plasticity in nanoporous palladium

Nanoindentation of palladium–hydrogen

Continuous Hydrogenation: Triphasic System Optimization at Kilo Lab Scale Using a Slurry Solution

Contact Info

Product

Resources

About