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Displaying 51 - 75 of 3755

Hydrogen embrittlement in ferritic steels

October 6, 2020
Author(s)
May L. Martin, Matthew J. Connolly, Frank W. DelRio, Andrew J. Slifka
… The deleterious effects of hydrogen on the physical properties of metals have been known … there are still significant questions related to the “hydrogen embrittlement” of ferritic steels due to … steels coupled with the global difficulties with gauging hydrogen content in all materials. However, recent …

Advances in Weld Hydrogen Sensors

June 1, 2002
Author(s)
David Olson, B. Mishra, R D. Smith, S. Niyomsoan, P. Termsuksawad, Y D. Park, V I. Kaydanov, Z Gavra, Ronald B. Goldfarb
… the application of modern physics concepts, advanced hydrogen sensors are being developed for rapid determination of weld hydrogen content and distribution. Electronic, optical, and … have demonstrated the ability to measure and monitor the hydrogen content in alloys. These advanced electronic-based …

LiBH 4 &#8226NH 3 BH 3 : A New Lithium Borohydride Ammonia Borane Compound with a Novel Structure and Favorable Hydrogen Storage Properties

July 1, 2012
Author(s)
Junhong Luo, Hui Wu, Wei Zhou, Xiangdong Kang, Zhanzhao Fang, Ping Wang
… heating to 450°C, totally yielding approximately}15.7 wt% hydrogen. In comparison with the LiBH6d4^ component phase, … International Journal of Hydrogen Energy … hydrogen storage, dehydrogenation, crystal structure, ammonia … Borane Compound with a Novel Structure and Favorable Hydrogen Storage Properties …

Current status of transport properties of hydrogen

August 21, 2007
Author(s)
Jacob W. Leachman, Bryce Jacobson, Steven Penoncello, Marcia L. Huber
… This paper contains an analysis of transport properties of hydrogen, particularly thermal conductivity and viscosity, … the current standard transport property models for normal hydrogen and parahydrogen, which are based on measurement and … the current transport property standards for both normal hydrogen and parahydrogen are included in the comparisons. …

Hydrogen-Induced Cracking and Blistering in Steels: A Review

March 31, 2022
Author(s)
May Ling Martin, Petros Sofronis
… understanding of the corrosion phenomenon known as Hydrogen-Induced Cracking (HIC). HIC is defined as cracking … where cracking is driven by the precipitation of gaseous hydrogen molecules within the crack, which typically occurs … phenomenon, encompassing a surface reaction for hydrogen uptake, hydrogen diffusion to vulnerable …

Testing the Performance of Hydrogen Sensors

September 8, 2009
Author(s)
Nathan D. Marsh, Thomas G. Cleary
… The acceptance of hydrogen as a widely-available energy source will depend to … on the perceived and actual safe dispensing and storage of hydrogen by the general public. Reliable detection of an accidental hydrogen gas release and mitigation of the hazard through …

Method Validation and Standards in Hydrogen/Deuterium Exchange Mass Spectrometry

March 1, 2016
Author(s)
Jeffrey W. Hudgens, Richard Y. Huang, Emma D'Ambro
… measurement standards for measuring protein dynamics by hydrogen/deuterium exchange mass spectrometry. Topics … Hydrogen-Deuterium Exchange Mass Spectrometry: Fundamentals, … Hydrogen/Deuterium Exchange, Mass Spectrometry, Method … Method Validation and Standards in Hydrogen/Deuterium Exchange Mass Spectrometry …

Current Status of Thermodynamic Properties of Hydrogen

August 17, 2007
Author(s)
Bryce Jacobson, Jacob W. Leachman, Steven Penoncello, Eric Lemmon
… a survey of the thermodynamic properties of normal hydrogen and parahydrogen with comparisons of properties … accepted standards for the thermodynamic properties of hydrogen were based on experimental and correlation work … the completion of the current standards for both normal hydrogen and parahydrogen are included in the comparisons. …

Stresses in Ion Exchange Layers of Soda-Lime-Silicate Glass

June 1, 2005
Author(s)
Theo Fett, J -. Guin, Sheldon M. Wiederhorn
… stresses that develop as a consequence of sodium/hydrogen ion exchange in soda-lime-silicate glass immersed in water. … of the stress is consistent with earlier findings that the ion-exchange process involves hydronium ions (H 3 O +) and … corrosion, fracture, fracture mechanics, glass, ion exchange …

Experiment at NIST towards one-electron ions in circular Rydberg states

June 20, 2011
Author(s)
Joseph N. Tan, Samuel M. Brewer, Nicholas D. Guise
… at NIST to enable tests of theory with oneelectron ions synthesized in circular Rydberg states from captured … highly charged ions, ion trapping, hydrogen-like ions, fundamental constants, Rydberg states … Experiment at NIST towards one-electron ions in circular Rydberg states …

Inelastic Neutron Scattering on Polymer Electrolytes for Lithium-Ion Batteries

May 7, 2012
Author(s)
Huagen H. Peng, Madhu Sudan Tyagi, Kirt A. Page, Christopher Soles
… The relationship between ion transport and polymer dynamics is central to the pursuit … solid polymer electrolyte systems of sufficiently high ion conductivities. Solid polymer electrolytes are highly … liquid electrolytes that are used today in commercial Li+ ion battery systems. Here we introduce inelastic neutron …

Frequently Asked Questions About Commercial Hydrogen Vehicle Refueling

December 28, 2018
Author(s)
Juana S. Williams
… "Commonly asked questions about hydrogen fuel cell electric vehicles (HFCEV) and hydrogen fuel availability, technology, safety; and the legal metrology requirements and terminology applicable to hydrogen fuel quality, measuring equipment, method of sale, …

Concentration of Hydrogen in Titanium Measured by Neutron Incoherent Scattering

May 1, 1998
Author(s)
Huaiyu H. Chen-Mayer, David F. Mildner, George P. Lamaze, Richard M. Lindstrom, Rick L. Paul, V. V. Kvardakov, W. J. Richards
… Symposium H: Hydrogen in Semiconductors and Metals … Proceedings in Materials Research Society Symposium: Hydrogen in Semiconductors and Metals … Concentration of Hydrogen in Titanium Measured by Neutron Incoherent Scattering …

ADVANCED NON-DESTRUCTIVE HYDROGEN SENSORS TO PREVENT MATERIAL DEGRADATION FROM HYDROGEN DAMAGE

January 5, 2009
Author(s)
Angelique N. Lasseigne, Kamalu Koenig, David Olson, Brajendra Mishra, Joshua Jackson, Thomas A. Siewert, Joseph D. McColskey
… steels (X100 and X120) exhibit lower tolerance for hydrogen (diffusible and formed hydrides) before significant … It is essential to have advanced sensors to monitor the hydrogen content and accumulation in the pipeline steel and … measurements have been utilized for in-situ monitoring of hydrogen content in pipelines. Low frequency induced current …

Switching-off Hydrogen Peroxide Hydrogenation in the Direct Synthesis Process

February 20, 2009
Author(s)
Andrew A. Herzing, Jennifer Edwards, Benjamin Solsona, Edwin Ntainjua, Albert F. Carley, Graham J. Hutchings, Christopher J. Kiely
… Hydrogen peroxide is an important disinfectant and bleach and … manufactured from an indirect process involving sequential hydrogenation/oxidation of anthraquinones. However, a direct process in which hydrogen and oxygen are reacted would be preferable. … "hydrogen peroxide synthesis", "spherical …

Radiation From k-Shell Filling in Highly Charged Ions: A Driver for Resonant Combination Cancer Therapy?

October 12, 2021
Author(s)
A P. Kavanagh, John D. Gillaspy, D G. Hirst, M H. Mendenhall, N Nakamura, S Ohtani, H Wantanabe, F J. Currell
… using radiation from bare and hydrogen-like highly-charged ions as a driver for a proposed form of cancer therapy is … cancer, high charged ions, radiation therapy, radiotherapy … Radiation From k-Shell Filling in Highly Charged Ions: A Driver for Resonant Combination Cancer Therapy? …

The Mobilities of Ions and Cluster Ions Drifting in Polar Gas

April 1, 1997
Author(s)
J A. de Gouw, M Krishnamurthy, S R. Leone
… The mobility of ions drifting in polar gases is explored both theoretically … New expermental results are presented for (1) NO+ ions drifting in H 2 O (the resuced zero-field mobility K 0 … is 0.66+or-}0.07 cm 2 V -1 s -1 ), (2) H 3 O+(H6d2^O) 3 ions drifting in H 2 O (K 0 (0) =0.43+or-}0.06cm 2 V -1 s -1 …

Post-Source Decay of Polystyrene Ions in Matrix-Assisted LaserDesorption/Ionization

January 1, 1999
Author(s)
R J. Goldschmidt, S Wetzel, William R. Blair, Charles M. Guttman
… Analyte ions produced in matrix-assisted laser desorption/ionization … little or no prompt fragmentation ofinitially formed ions. In many cases only intact molecular ions are observed in MALDI mass spectra. This is generally … Post-Source Decay of Polystyrene Ions in Matrix-Assisted LaserDesorption/Ionization …

Raman spectroscopic observation of dehydrogenation in ball-milled LiNH2-LiBH4-MgH2 nanoparticles

April 3, 2010
Author(s)
Jason Hattrick-Simpers, Chun Chiu, James E. Maslar, Leonid A. Bendersky, Michael E. Niemann, Sesha S. Srinivasan, Elias K. Stefanakos
… 415 K, while Li4BN3H10 persisted and continued to release hydrogen up to 453 K. Subsequent hydrogen release is realized by the direct conversion of … International Journal of Hydrogen Energy … hydrogen storage, raman spectroscopy, thermodynamic …

Hydrogen Species Motion in Piezoelectrics: A Quasi-Elastic Neutron Scattering Study

March 5, 2012
Author(s)
K. J. Alvine, Madhu Sudan Tyagi, Craig Brown, Terrence J. Udovic, T. Jenkins, S. G. Pitman
… Hydrogen is known to damage or degrade piezoelectric … access memory applications, and at high pressure for hydrogen powered vehicle applications. The piezoelectric … degradation is in part governed by the motion of hydrogen species within the piezoelectric materials. We …

Enumeration of the Hydrogen-Enhanced Localized Plasticity Mechanism for Hydrogen Embrittlement in Structural Materials

February 15, 2019
Author(s)
May L. Martin, Mohsen Dadfarnia, Akihide Nagao, Shuai Wang, Petros Sofornis
… and simulation results enumerating the development of the hydrogen-enhanced localized plasticity (HELP) mechanism as a viable hydrogen embrittlement mechanism for structural materials. A … as are a variety of mechanical loading conditions and hydrogen charging conditions, supporting the concept that, …

DETAILED SUMMARY OF CHARACTERISTICS AND ATTRIBUTES OF API STEEL INTENDED FOR GASEOUS HYDROGEN PIPELINE SERVICE

September 15, 2022
Author(s)
Andrew Slifka, Douglas Stalheim, Chris San Marchi, Joseph Ronevich, Jim Campbell
… for controlling greenhouse gases has brought the use of hydrogen as an energy source in industry and transportation … Part of the infrastructure development for the use of hydrogen is to use pipelines for transportation and … the addition of new pipelines to support the volume of hydrogen required. The pipelines may transport pure gaseous …
Displaying 51 - 75 of 3755
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