Hydrogen emission at grain boundaries in tensile-deformed Al-9%Mg alloy by hydrogen microprint technique

Koyama, Ryoto; Itoh, Goroh

doi:10.1016/s1003-6326(14)63318-5

Cited by 13 publications

(4 citation statements)

References 9 publications

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“…Studies concerning the state of hydrogen in materials [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][48][49][50][51] cited lattice defects (atomic vacancy, dislocation, and grain boundaries), impurity atoms, precipitates, inclusion boundaries, voids, etc., as hydrogen trap sites. Distinguishing the state of hydrogen has recently become possible with thermal desorption spectrometry and the like, based on the binding energy between such trap sites and hydrogen.…”

Section: B Effect Of Microstructure Of Coatings On Hydrogen-permeatimentioning

confidence: 99%

Nanostructured thin films for hydrogen-permeation barrier

Tamura

Eguchi

2015

Journal of Vacuum Science &Amp; Technology A: Vacuum, Surfaces, and Films

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The authors confirmed that applying a coating of Al2O3, TiC, or TiN on a substrate reduced the hydrogen permeation by a factor of at least one order of magnitude compared with uncoated substrates. Al2O3 films consisting of fine crystal grains, with diameters of about 40 nm or less, provided superior hydrogen-permeation barriers on the test specimens. The test specimens coated with TiN or TiC films, with columnar crystals grown vertically on the substrate, tended to exhibit higher hydrogen permeability. The microcrystalline structures with many grain boundaries are expected to provide effective hydrogen-barrier performance.

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Section: B Effect Of Microstructure Of Coatings On Hydrogen-permeatimentioning

confidence: 99%

Nanostructured thin films for hydrogen-permeation barrier

Tamura

Eguchi

2015

Journal of Vacuum Science &Amp; Technology A: Vacuum, Surfaces, and Films

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“…The basic principle is the reduction effect of H atom released from the sample surface, where a layer of photographic emulsion containing silver bromide (AgBr) is prepared before H releasing. The Ag ions (Ag + ) are reduced to Ag followed by the equation: , A g + + H → A g + H + In this case, the microstructures with higher H emission activities and the distribution of H flux can be visualized as Ag deposits under scanning electron microscope (SEM) . This technique has been combined with heat treatments to successfully study the H trapping behavior of defects, for instance, dislocations and vacancies .…”

Section: Knowledge Base About Hementioning

confidence: 99%

Section: Experimental Mapping Of Hmentioning

confidence: 99%

“…In this case, the microstructures with higher H emission activities and the distribution of H flux can be visualized as Ag deposits under scanning electron microscope (SEM). 285 This technique has been combined with heat treatments to successfully study the H trapping behavior of defects, for instance, dislocations and vacancies. 287 Such experimental method is convenient and safe; however, it can only provide qualitative results of H flux.…”

Section: Experimental Mapping Of Hmentioning

confidence: 99%

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Hydrogen Embrittlement as a Conspicuous Material Challenge─Comprehensive Review and Future Directions

Yu,

Díaz,

et al. 2024

Chem. Rev.

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Hydrogen is considered a clean and efficient energy carrier crucial for shaping the net-zero future. Large-scale production, transportation, storage, and use of green hydrogen are expected to be undertaken in the coming decades. As the smallest element in the universe, however, hydrogen can adsorb on, diffuse into, and interact with many metallic materials, degrading their mechanical properties. This multifaceted phenomenon is generically categorized as hydrogen embrittlement (HE). HE is one of the most complex material problems that arises as an outcome of the intricate interplay across specific spatial and temporal scales between the mechanical driving force and the material resistance fingerprinted by the microstructures and subsequently weakened by the presence of hydrogen. Based on recent developments in the field as well as our collective understanding, this Review is devoted to treating HE as a whole and providing a constructive and systematic discussion on hydrogen entry, diffusion, trapping, hydrogen–microstructure interaction mechanisms, and consequences of HE in steels, nickel alloys, and aluminum alloys used for energy transport and storage. HE in emerging material systems, such as high entropy alloys and additively manufactured materials, is also discussed. Priority has been particularly given to these less understood aspects. Combining perspectives of materials chemistry, materials science, mechanics, and artificial intelligence, this Review aspires to present a comprehensive and impartial viewpoint on the existing knowledge and conclude with our forecasts of various paths forward meant to fuel the exploration of future research regarding hydrogen-induced material challenges.

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Combined effects of irradiation and hydrogen ions on surface oxidation of 308 L austenite stainless steel

Jiang

Zhang

et al. 2021

Corrosion Science

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Hydrogen emission at grain boundaries in tensile-deformed Al-9%Mg alloy by hydrogen microprint technique

Cited by 13 publications

References 9 publications

Nanostructured thin films for hydrogen-permeation barrier

Nanostructured thin films for hydrogen-permeation barrier

Hydrogen Embrittlement as a Conspicuous Material Challenge─Comprehensive Review and Future Directions

Combined effects of irradiation and hydrogen ions on surface oxidation of 308 L austenite stainless steel

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