Deformation of palladium plates by a small external stress during hydrogen absorption and desorption

Kawasaki, Akio; Itoh, Satoshi; Shima, Kunihiro; Yamazaki, T.

doi:10.1016/j.msea.2012.05.011

Cited by 16 publications

(15 citation statements)

References 17 publications

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“…When palladium metal is exposed to hydrogen gas, typically at high temperature such as 100 • C or more, palladium absorbs hydrogen. The absorption induces phase transition from α phase to β phase through α + β phase, where the α phase and the β phase coexist, as the phase diagram [3][4][5] shows. This phase transition from the α phase to the β phase is believed to be the cause of deformation of a palladium bulk reported in Refs.…”

Section: Introductionmentioning

confidence: 99%

Change in the crystalline structure during the phase transition of the palladium–hydrogen system

Kawasaki

Itoh

Shima³

et al. 2015

Phys. Chem. Chem. Phys.

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We performed an X-ray diffraction experiment while a palladium bulk absorbed and desorbed hydrogen to investigate the behavior of the crystalline lattice during the phase transition between the α phase and the β phase. Fast growth of the β phase was observed at around x = 0.1 and x = 0.45 of PdHx, and the phase transition rate has an exponential behavior in between. In addition, slight compression of the lattice at a high hydrogen concentration, an increase in the lattice constant, and broadening of the line width of the α phase after a cycle of absorption and desorption of hydrogen were observed. These behaviors correlated with the change in the sample length, which may infer that the change in shape was related to the phase transition.

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Section: Introductionmentioning

confidence: 99%

Change in the crystalline structure during the phase transition of the palladium–hydrogen system

Kawasaki

Itoh

Shima³

et al. 2015

Phys. Chem. Chem. Phys.

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“…From the other side, palladium is known to adsorb hydrogen forming palladium hydrides with increased Pd-Pd distances. 18,26,[29][30][31][32] In presence of hydrogen, palladium structure becomes more "flexible" 33 which may facilitate the restructuring from metallic palladium to its oxide structure. It should be noted that, the range of achieved temperatures (Fig.…”

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confidence: 99%

In situ formation of surface and bulk oxides in small palladium nanoparticles

et al. 2020

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“…The mechanical properties of palladium with hydrogen appear bizarre [36] in terms of a room temperature induced extreme ability to flow without failure. The mechanical properties of palladium with hydrogen appear bizarre [36] in terms of a room temperature induced extreme ability to flow without failure.…”

Section: Implications Of a Proton Band On Mechanical Propertiesmentioning

confidence: 99%

Proton in SRF Niobium

Wallace¹,

Myneni²,

Ciovati³

et al. 2011

AIP Conference Proceedings

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Hydrogen is a difficult impurity to physically deal with in superconducting radio frequency (SRF) niobium, therefore, its properties in the metals should be well understood to allow the metal's superconducting properties to be optimized for minimum loss in the construction of resonant accelerator cavities. It is known that hydrogen is a paramagnetic impurity in niobium from NMR studies. This paramagnetism and its effect on superconducting properties are important to understand. To that end analytical induction measurements aimed at isolating the magnetic properties of hydrogen in SRF niobium are introduced along with optical reflection spectroscopy which is also sensitive to the presence of hydrogen. From the variety, magnitude and rapid kinetics found in the optical and magnetic properties of niobium contaminated with hydrogen forced a search for an atomic model. This yielded quantum mechanical description that correctly generates the activation energy for diffusion of the proton and its isotopes not only in niobium but the remaining metals for which data is available. This interpretation provides a frame work for understanding the individual and collective behavior of protons in metals. 1

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Deformation of palladium plates by a small external stress during hydrogen absorption and desorption

Cited by 16 publications

References 17 publications

Change in the crystalline structure during the phase transition of the palladium–hydrogen system

Change in the crystalline structure during the phase transition of the palladium–hydrogen system

In situ formation of surface and bulk oxides in small palladium nanoparticles

Proton in SRF Niobium

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