Results 61 to 70 of about 1,081,244 (305)

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

Population of Nonmetallic Inclusions in Liquid High‐Silicon Electrical Steel in Contact With MgO–C Refractories Based on Recyclates and Environmentally Friendly Binders

Advanced Engineering Materials, EarlyView.
The formation of nonmetallic inclusions (NMIs) was investigated in this study, carrying out immersion tests for 30 min at a temperature of 1600°C with liquid high‐silicon electrical steel (Si ≈ 3 mass‐%) and different MgO–C refractories. Conventional MgO–C refractories were considered, as well as MgO–C refractories containing MgO–C recyclate and ...
Lukas Neubert, Matheus Roberto Bellé, Florian Kerber, Dinesh Kumar Gunasekar, Hans‐Jörn Weddige, Christos G. Aneziris, Olena Volkova   +6 more
wiley   +1 more source

Carbon dioxide exchange in lichens: Relationship between the diffusive resistance of carbon dioxide and water vapour [PDF]

, 1982
Gaseous diffusion resistances for carbon dioxide and water vapour, thallus water content and thallus water potential were experimentally determined on species of the Stictaceae.
Green, T.G. Allan, Snelgar, W.P.
core   +2 more sources

Corrosion and Process Analysis of a Preoxidized MgO Recyclate‐Based Cermet Anode in Laboratory‐Scale Na‐Cryolite Molten Salt Electrolysis of Aluminum at 1000°C

Advanced Engineering Materials, EarlyView.
EDX elemental map of the pre‐oxidized MgO–steel cermet anode cross section after electrolysis. The development of inert anodes for aluminum electrolysis remains challenging due to the high corrosivity of cryolite‐based melts at 950°C–1000°C. This study investigates the corrosion and process behavior of a carbon‐free MgO–steel cermet anode derived from ...
Alexander Adamczyk, Farhan Hossain, Felipe A. Garcia Paz, Serhii Yaroshevskyi, Felix Drechsler, Daniel Vogt, Christos G. Aneziris, Alexandros Charitos   +7 more
wiley   +1 more source

New Directions in Transition Metal Catalyzed Carbonylation Chemistry

CHIMIA, 2018
Carbon monoxide (CO) represents an important C1-building block for the construction of some of the most fundamental chemical functionalities carrying a carbon–oxygen double bond.
Dennis U. Nielsen, Karoline T. Neumann, Troels Skrydstrup   +2 more
doaj   +1 more source

Comparison of data-driven uncertainty quantification methods for a carbon dioxide storage benchmark scenario

, 2018
A variety of methods is available to quantify uncertainties arising with\-in the modeling of flow and transport in carbon dioxide storage, but there is a lack of thorough comparisons.
Barth, Andrea, Franzelin, Fabian, Haasdonk, Bernard, Kröker, Ilja, Köppel, Markus, Nowak, Wolfgang, Oladyshkin, Sergey, Pflüger, Dirk, Rohde, Christian, Santin, Gabriele, Wittwar, Dominik   +10 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

Subtle tuning of micro-environment in COFs nanoribbons actuates low electricity-consumption photo-assisted Co-electrolysis of methanol and CO2

Nano Research Energy
The lower electricity consumption (EC) and higher value-added products are much desired yet still challenging for the development of CO2 coupling electrocatalytic systems.
Yi-Rong Wang, Hui-Min Ding, Ming Yue, Qi Li, Jing-wen Shi, Qing Huang, Jie Zhou, Ying Zang, Yifa Chen, Shun-Li Li, Ya-Qian Lan   +10 more
doaj   +1 more source

THERMODYNAMIC ANALYSIS OF SYNTHESIS GAS AND HIGHER HYDROCARBONS PRODUCTION FROM METHANE [PDF]

, 2012
This chapter focused on thermodynamic chemical equilibrium analysis using method of direct minimization of Gibbs free energy for all possible methane reactions with oxygen (partial oxidation of methane), carbon dioxide (CO2 reforming of methane), steam ...
Istadi, Istadi
core  

Climate simulation of the latest Permian: Implications for mass extinction [PDF]

, 2005
This report presents the results of climate modeling research which indicates that elevated levels of carbon dioxide in the atmosphere at the end of the Permian period led to climatic conditions inhospitable to both marine and terrestrial life.
Benton, Berner, Berner, Campbell, Christine A. Shields, Chumakov, Grice, Holser, Hotinski, Isozaki, Jeffrey T. Kiehl, Kidder, Kutzback, Rees, Renne, Retallack, Retallack, Ryskin, Taylor, Wang, Ward, Wignall, Zhang   +22 more
core   +1 more source