Results 61 to 70 of about 20,890 (299)

Electrical Conductivities of Conductors, Semiconductors, and Their Mixtures at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This article presents a comprehensive review of temperature‐dependent electrical conductivity data for multiple material classes at elevated temperatures, highlighting a persistent conductivity gap between metals and semiconductors in the range of 102$\left(10\right)^{2}$– 107$\left(10\right)^{7}$ S/m. Metal–ceramic irregular metamaterials are proposed
Valentina Torres Nieto, Marcia A. Cooper
wiley   +1 more source

Characterization of a Recyclate‐Based MgO‐Steel Composite As‐Sintered Inert Anode Candidate After Exposure to Cryolite Electrolysis

Advanced Engineering Materials, EarlyView.
Carbon‐free inert anodes are essential for decarbonizing aluminum electrolysis. This study investigates a recyclate‐based MgO‐316L steel composite anode tested under galvanostatic Hall–Héroult conditions in cryolite at 1000°C. Microstructural analysis reveals selective MgO fluorination, spinel and oxide layer formation, electrolyte infiltration, and ...
Serhii Yaroshevskyi, Alexander Adamczyk, Nora Brachhold, Gert Schmidt, Jana Hubálková, R. Gumeniuk, Alexandros Charitos, Christos G. Aneziris   +7 more
wiley   +1 more source

Plasma Electrolytic Oxidation of Al-Zn-Mg-Ni-Fe “Nikalin” Alloys

Metals
Ceramic coatings were formed on the surface of as-cast Al5.2Zn1.7Mg0.4Ni0.3Fe and heat-treated Al7.0Zn2.7Mg0.5Ni0.4Fe “nikalin” aluminum alloys by using the plasma electrolytic oxidation (PEO) technique in a silicate–alkaline electrolyte.
Nikolay V. Letyagin, Torgom K. Akopyan, Alexander A. Sokorev, Ivan V. Shkaley, Stanislav O. Cherkasov, Vitali V. Doroshenko, Tatiana A. Sviridova, Alexander Yu. Churyumov   +7 more
doaj   +1 more source

Wear and Corrosion Performance of PEO-synthesized SiC Nanocomposite Coatings: Effect of Processing Time and Current Density

International Journal of Electrochemical Science, 2016
In the present study, a systematic investigation of the effect of the process parameters on the final properties of the PEO coatings was done. Protective oxide coatings were prepared on AZ31 magnesium alloy by plasma electrolytic oxidation (PEO) process ...
H. Nasiri Vatan, R. Ebrahimi-Kahrizsangi, M. Kasiri-Asgarani   +2 more
doaj   +1 more source

Study of the Properties of Qxide Coatings Formed on Titanium by Plasma Electrolytic Oxidation Method

Eurasian Chemico-Technological Journal, 2020
The development of the modern industry requires to develop high-performance, environmentally friendly methods for the production of light structural material surface coatings.
Zh. M. Ramazanova, M. G. Zamalitdinova
doaj   +1 more source

Fibrin association at hybrid biointerfaces made of clot-binding peptides and polythiophene [PDF]

, 2016
The properties as biointerfaces of electroactive conducting polymer-peptide biocomposites formed by poly(3,4-ethylenedioxythiophene) (PEDOT) and CREKA or CR(NMe)EKA peptide sequences (where Glu has been replaced by N-methyl-Glu in the latter) have been ...
Agemy, Aradilla, Bhattacharyya, Blombäk, Boccaccio, Carr, Coelho, del Valle, Dolatshahi-Pirouz, Doolittle, Doolittle, Fabregat, Fabregat, Flamia, Groenendaal, Groenendaal, Gunawan, Guo, Hamedi, Hamzah, Han, Hoffman, Huang, Kirchmeyer, Li, Longa, López-Pérez, Maione, O'Brien, Oss, Pasqualini, Peters, Pérez-Madrigal, Pérez-Madrigal, Romero, She, Shi, Simberg, Soto-Delgado, Stevens, Wasilewska, Weisel, Weisel, Wong, Wu, Yuan, Zanuy, Zanuy, Zanuy, Zanuy, Zavyalova   +50 more
core   +4 more sources

Dynamic Testing of Cold Gas Sprayed Bipolar Plates–Porous Transport Layer Coating System in Proton Exchange Membrane Water Electrolysis

Advanced Engineering Materials, EarlyView.
Through direct application of porous transport layer (PTL) on the bipolar plate (BPP) with thermal spraying, the interfacial contact resistance is improved. With the cold gas sprayed BPP–PTL coating system, a proton exchange membrane water electrolysis cell with a cell voltage of Ucell = 1.9 V can be operated up to i = 2.5 A/cm2 in a dynamic mode ...
Kirsten Bobzin, Marvin Erck, Kevin Jasutyn, Katja Radermacher, Andreas Bund, Mario Kurniawan   +5 more
wiley   +1 more source

Recent advances in protective coatings and surface modifications for corrosion protection of Mg alloys

Journal of Materials Research and Technology
Magnesium (Mg) and its alloys possess many outstanding properties, showing great potential to be extensively applied in different fields. Unfortunately, they are highly susceptible to corrosion, especially to corrosive chloride ions.
Wenhui Yao, Yi Tan, Qingze Lu, Hongquan Yi, Changxi Cheng, Liang Wu, Viswanathan S. Saji, Fusheng Pan   +7 more
doaj   +1 more source

Improved corrosion resistance of commercially pure magnesium after its modification by plasma electrolytic oxidation with organic additives [PDF]

, 2018
The optimal mechanical properties render magnesium widely used in industrial and biomedical applications. However, magnesium is highly reactive and unstable in aqueous solutions, which can be modulated to increase stability of reactive metals that ...
Duque, Valentina, Echeverria, Felix, Echeverry-Rendon, Monica, Harmsen, Martin C, Quintero, David, Robledo, Sara M   +5 more
core   +1 more source

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