Results 31 to 40 of about 46,724 (303)

Significance of Self-Trapping on Hydrogen Diffusion [PDF]

Physical Review Letters, 2010
The diffusion rate of hydrogen in Nb was calculated using ab initio molecular dynamics simulations. At low temperatures the hydrogen is strongly trapped in a local strain field which is caused by the elastic response of the lattice. At elevated temperatures, the residence time (τ) of hydrogen in an interstitial site is not sufficient for fully ...
Andreas, Blomqvist, Gunnar K, Pálsson, C Moysés, Araújo, Rajeev, Ahuja, Björgvin, Hjörvarsson   +4 more
openaire   +2 more sources

Hydrogen transport and embrittlement in 300 M and AerMet100 ultra high strength steels [PDF]

, 2010
This paper describes how hydrogen transport affects the severity of hydrogen embrittlement in 300 M and AerMet100 ultra high strength steels. Slow strain rate tests were carried out on specimens coated with electrodeposited cadmium and aluminium-based
Robinson, M. J., Figueroa-Gordon, Douglas J.   +1 more
core   +1 more source

Hydrogen microsensors with hydrogen sulfide traps

Sensors and Actuators B: Chemical, 2015
AbstractHydrogen is often formed in sulfidic environments where interference from hydrogen sulfide has prevented its analysis by amperometric hydrogen microsensors. Hydrogen microsensors were made insensitive to hydrogen sulfide by placing a sulfide trap (guard) containing solutions of heavy metal ions, sulfide-oxidizing ferricyanide, or alkaline ...
Nielsen, Michael, Larsen, Lars Hauer, Ottosen, Lars Ditlev Mørck, Revsbech, Niels Peter   +3 more
openaire   +2 more sources

Variations in Minority Carrier-Trapping Effects Caused by Hydrogen Passivation in Multicrystalline Silicon Wafer

Energies, 2020
In a multicrystalline silicon (mc-Si) wafer, trapping effects frequently occur in the carrier lifetime measurement based on the quasi-steady-state photoconductance (QSSPC) technique.
Yujin Jung, Kwan Hong Min, Soohyun Bae, Yoonmook Kang, Donghwan Kim, Hae-Seok Lee   +5 more
doaj   +1 more source

Optical cooling of atomic hydrogen in a magnetic trap [PDF]

Physical Review Letters, 1993
We describe the prospects for optical cooling of magnetically trapped atomic hydrogen. We analyze the performance of an optical system currently under development in our laboratory and present calculations for the optical cooling rate. We conclude that by using optical techniques hydrogen can be cooled to below 10 mK while the density is simultaneously
Setija, I.D., Werij, H.G.C., Luiten, O.J., Reynolds, M.W., Hijmans, T.W., Walraven, J.T.M.   +5 more
openaire   +3 more sources

Influence of dislocations on hydrogen diffusion and trapping in an Al-Zn-Mg aluminium alloy

Materials & Design, 2019
Cu-lean Al-Zn-Mg alloys are known to be susceptible to hydrogen embrittlement (HE), which currently limits their use in automotive industry. Several works suggested that the resulting loss of mechanical properties was related to hydrogen trapping in ...
L. Oger, B. Malard, G. Odemer, L. Peguet, C. Blanc   +4 more
doaj   +1 more source

Switching nanoprecipitates to resist hydrogen embrittlement in high-strength aluminum alloys

Nature Communications, 2022
Hydrogen embrittlement limits the strengthening of aluminum alloys. Here, the authors propose the precipitate switching strategy to effectively control hydrogen embrittlement of high-strength aluminum alloys by utilizing the hydrogen trapping effect at T
Yafei Wang, Bhupendra Sharma, Yuantao Xu, Kazuyuki Shimizu, Hiro Fujihara, Kyosuke Hirayama, Akihisa Takeuchi, Masayuki Uesugi, Guangxu Cheng, Hiroyuki Toda   +9 more
doaj   +1 more source

Effect of Microstructure on Hydrogen Permeation in EA4T and 30CrNiMoV12 Railway Axle Steels

Metals, 2019
A comparative study was conducted to reveal the effect of microstructure on hydrogen permeation in the EA4T and 30CrNiMoV12 railway axle steels. Unlike the EA4T with its sorbite structure, 30CrNiMoV12 steel shows a typical tempered martensitic structure,
Tingzhi Si, Yunpeng Liu, Qingan Zhang, Dongming Liu, Yongtao Li   +4 more
doaj   +1 more source

Hydrogen Trapping Behavior in Vanadium Microalloyed TRIP-Assisted Annealed Martensitic Steel

Metals, 2019
Transformation induced plasticity (TRIP)-assisted annealed martensitic (TAM) steel combines higher tensile strength and elogangtion, and has been increasingly used but appears to bemore prone to hydrogen embrittlement (HE).
Xiongfei Yang, Hao Yu, Chenghao Song, Lili Li   +3 more
doaj   +1 more source

Evaluating the respective role of individual precipitates on the hydrogen trapping ability and locations of a co-precipitation enameled steel via in situ Scanning Kelvin Probe Force Microscopy

Philosophical Magazine Letters
The fishscaling resistance of enameled steel is closely related to the hydrogen-related behaviour of its constituent phases, in which dispersed co-precipitates are regarded as the most effective hydrogen-trapping sites.
Xuejian Fu, Chun Xu, Yu Li, Quanshe Sun, Yuwei Liu   +4 more
doaj   +1 more source