Results 51 to 60 of about 240,998 (304)

Removing Oxide Layers and Retaining Oxide‐Free Steel Surfaces by Polishing in Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
In this study, the efficacy of wet mechanical polishing under an oxygen‐free atmosphere for deoxidation and the retention of an oxide‐free steel surface are elucidated using X‐ray photoelectron spectroscopy. The methodology proved successful; however, the results were highly dependent on the preparation of the solvents used to clean the samples after ...
Friedrich Bürger, Lienhard Wegewitz, Wolfgang Maus‐Friedrichs   +2 more
wiley   +1 more source

Law of imbibition effect on shale gas occurrence state

Natural Gas Industry B, 2020
So far, how imbibition effect changes the occurrence state of shale gas has not been quantitatively understood, and the law of gas–water dynamic displacement caused by the retention of abundant fracturing fluid in a shale reservoir has not been ...
Zhiming Hu, Ying Mu, Zhaobin Gu, Xianggang Duan, Yalong Li   +4 more
doaj   +1 more source

Net Charge on a Noble Gas Atom Adsorbed on a Metallic Surface

, 2000
Adsorbed noble gas atoms donate (on the average) a fraction of an electronic charge to the substrate metal. The effect has been experimentally observed as an adsorptive change in the electronic work function.
A. Widom, A.M. Chestrs, E. Cheng, G. Ehrlich, G. Vidali, H. Lüth, H.B.C. Casimir, I.E.E. Dzaloshinski, J. Harris, J. Van Oirschot, J.C.P. Mignolet, J.C.P. Mignolet, J.G. Dash, L.W. Bruch, M. Hannout, M. S. Tomassone, M.R. Trioni, M.S. Tomassone, M.W. Roberts, N.D. Lang, N.D. Lang, O. Yu Kolenychenko, P.R. Antoniewicz, S. Rauber, T. Engel, V. Pouthier, W. Heitler, W. Heitler, W. Teizer, W. Widdra, Y. N. Srivastava   +30 more
core   +1 more source

Raman Spectroscopic Identification of Oxide Phases in a Corroded MgO–Steel Composite Anode Used in Aluminum Molten Salt Electrolysis

Advanced Engineering Materials, EarlyView.
Micro‐Raman spectroscopy is applied to characterize corrosion products in a recycled‐based MgO–316L steel composite anode after molten salt electrolysis. A depth‐dependent Fe–O/Fe–Al–O layer sequence of magnetite, hercynite, and an Al‐doped magnetite transition zone is identified.
Felix Drechsler, Serhii Yaroshevskyi, Alexander Adamczyk, Mahnaz Mehdizadehlima, Julia Richter, Cameliu Himcinschi, David Rafaja, Alexandros Charitos, Christos G. Aneziris, Jens Kortus   +9 more
wiley   +1 more source

Adsorption in Mixtures with Competing Interactions

Molecules, 2021
A binary mixture of oppositely charged particles with additional short-range attraction between like particles and short-range repulsion between different ones in the neighborhood of a substrate preferentially adsorbing the first component is studied by ...
Marek Litniewski, Alina Ciach
doaj   +1 more source

Dielectric Barrier Discharge Plasma Deoxidation of Natively Oxide Layer of Copper Powders in a Fluidized Bed

Advanced Engineering Materials, EarlyView.
This paper presents a novel approach to reducing oxide layers on metal powders using low‐temperature hydrogen dielectric barrier discharge plasmas at atmospheric pressure. Unlike conventional hydrogen‐plasma reductions, the powders do not contact the plasma directly.
Shukang Zhang, Annett Wollmann, Thomas Gimpel, Alfred P. Weber   +3 more
wiley   +1 more source

Research on energy instability of composite coal based on unsteady diffusion to cause disaster

Meitan kexue jishu
In China, due to the influence of geological tectonics, the phenomenon of primary structural coal and tectonic coal stratification exists in many coal seams.
Yujin QIN, Weiwei SU, Shouqing LU, Mingjie LI   +3 more
doaj   +1 more source

Effect of Matrix-Wellbore Flow and Porosity on Pressure Transient Response in Shale Formation Modeling by Dual Porosity and Dual Permeability System

Journal of Chemistry, 2015
A mathematical dual porosity and dual permeability numerical model based on perpendicular bisection (PEBI) grid is developed to describe gas flow behaviors in shale-gas reservoirs by incorporating slippage corrected permeability and adsorbed gas effect ...
Daolun Li, Wenshu Zha, Dewen Zheng, Longjun Zhang, Detang Lu   +4 more
doaj   +1 more source

Gas and surface diffusion in modified γ-alumina systems [PDF]

, 1989
The transport of pure gases through a microporous membrane is described. The alumina-based membrane (pores 2.5-4 nm) is suitable for Knudsen diffusion separation.
Burggraaf, A.J., Keizer, K., Uhlhorn, R.J.R.   +2 more
core   +2 more sources

The structure of adsorbed gas monolayers [PDF]

Accounts of Chemical Research, 1976
Some recent work aimed at understanding the structure of adsorbed monolayers and its role in determining the chemical reactivity of a surface is reviewed. The phenomenon of ordered adsorption is discussed with the object of determining what the study of the structure of adsorbed monolayers reveals about the basic interaction at a surface.
Jeffrey C. Buchholz, Gabor A. Somorjai
openaire   +1 more source