Results 121 to 130 of about 1,818,425 (300)

Research Progress on the Microscopic Mechanism of Alloying Elements Regulating Hydrogen Permeation Behavior

open access: yesLiaoning Shiyou Huagong Daxue xuebao
Hydrogen permeation is a pivotal factor inducing hydrogen embrittlement (HE) in pipeline steels. Alloying presents an effective strategy for enhancing both the mechanical properties and HE resistance of these steels.
Mingyue WANG, Liangxue CAI, Guangli XU
doaj   +1 more source

Experimentally measured effects of the wall boundary layer on shock-tube performance [PDF]

open access: yes
Nitrogen driven gas wall boundary layer effect and hydrogen driver gas thermodynamic effect on shock speed and test time in ...
Livingston, F. R.
core   +1 more source

Application of the VFM to the Zeeman Effect in Hydrogen

open access: yes, 1990
Let us consider a hydrogen atom of nuclear charge Z, placed in an external uniform magnetic field along the x3≡z direction. The Hamiltonian operator describing this system in the non-relativistic approximation, and with suitable units (Appendix H), is: $${{H}_{e}}=-\frac{1}{2}({{\frac{\partial }{\partial {{\rho }^{2}}}}^{2}}+\frac{1}{\rho }\frac ...
Arteca, Gustavo Alberto   +2 more
openaire   +1 more source

Zein‐Based Adhesives: Sustainable Extraction and Application in Bioadhesive Technologies

open access: yesAdvanced Engineering Materials, EarlyView.
Zein is extracted from corn gluten meal using a simple and scalable process with high yield (~90%). The resulting protein is applied in bioadhesives modified with Ca2+ and Fe3+ ions, exhibiting substrate‐dependent adhesion. The findings demonstrate competitive bonding performance and highlight the role of ionic interactions in tuning adhesion ...
Paula Bertolino Sanvezzo   +3 more
wiley   +1 more source

Ammonium Fluoride as a Hydrogen-disordering Agent for Ice

open access: yes, 2019
The removal of residual hydrogen disorder from various phases of ice with acid or base dopants at low temperatures has been a focus of intense research for many decades. As an antipode to these efforts, we now show using neutron diffraction that ammonium
Bramwell, Steven T.   +5 more
core  

Reduction of Oxide Inclusions During the High‐Frequency Welding of Steel via a Nonthermal Ar/H2 Plasma Jet

open access: yesAdvanced Engineering Materials, EarlyView.
High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin   +4 more
wiley   +1 more source

Influence of an Argon/Silane Atmosphere on the Temperature of a Thermal Plasma

open access: yesAdvanced Engineering Materials, EarlyView.
The influence of a silane‐doped argon atmosphere on the chemical composition and temperature of a thermal nontransferring argon plasma is investigated using optical emission spectroscopy. As a result of the high amount of free electrons resulting from the stepwise ionization and dissociation of the silane molecule, even a silane addition of 0.01 vol ...
Lena Kreie   +4 more
wiley   +1 more source

Handbook of Establishing and Maintaining Oxygen‐Free Atmospheres

open access: yesAdvanced Engineering Materials, EarlyView.
This study presents a practical framework for creating oxygen‐free atmospheres at ambient pressure using silane‐doped inert gases. The results show that ultra‐low oxygen levels and strongly reduced water content can be achieved through controlled silane dosing, drying systems, and sensor monitoring.
Sascha Jan Zimmermann   +3 more
wiley   +1 more source

Stress corrosion cracking of titanium alloys [PDF]

open access: yes
The effect of hydrogen on the properties of metals, including titanium and its alloys, was investigated. The basic theories of stress corrosion of titanium alloys are reviewed along with the literature concerned with the effect of absorbed hydrogen on ...
Beck, F. H.   +3 more
core   +1 more source

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