Results 51 to 60 of about 58,612 (252)

Investigation of Thermo‐Chemical Processes in Commercial MgO‐C Refractory Bricks With and Without MgO‐C Recyclate at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This study investigates thermo‐chemical processes during high‐temperature testing of two commercial MgO‐C brick grades, one containing 47.5 wt.% MgO‐C recyclate. Using ETV, DTA/TG‐MS, XRD, and SEM/EDS/EBSD, mechanisms such as carbothermal reduction of magnesia, impurity incorporation into the secondary MgO surface layer, and calcium‐rich phase ...
Alexander Schramm, Jana Hubálková, Christian Schimpf, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +6 more
wiley   +1 more source

Heat Transfer Enhancement of a New Composite Adsorbent

Zhileng xuebao, 2013
Composite adsorbents of CaCl2/ activated carbon were prepared by charring and activating at high temperature from CaCl2 and fir crumbs. Thermal conductivity was improved by adding expanded graphite into composite adsorbent.
Lu Zhenneng, Bu Xianbiao, Wang Lingbao, Ma Weibin   +3 more
doaj  

Mechanism of carbon nanotube growth in expanded graphite via catalytic pyrolysis reaction using carbores P as a carbon source

Frontiers in Chemistry, 2023
Carbon nanotubes (CNTs) had potential applications in energy conversion and storage devices, and it could be prepared by expanded graphite loaded with catalyst at high temperature, however, the mechanism of carbon nanotube growth in expanded graphite ...
Yilong Wang, Yilong Wang, Wenli Zhang, Yuejun Chen, Xiongfeng Zeng, Xiongfeng Zeng, Jiankun Huang, Hengyong Wei, Junbo Tu   +8 more
doaj   +1 more source

Position of K atoms in doped single-walled carbon nanotube crystals [PDF]

, 1998
Recent experiments by Lee et al. [Nature (London) 363, 255 (1997)] show that doping carbon single-wall nanotube (SWNT) ropes with K, Rb, or Br2 leads to metallic conductivity, but the structure and properties are not known.
Gao, Guanghua, Goddard, William A., III, Çağin, Tahir   +2 more
core   +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

Optimization of inhomogeneous electron correlation factors in periodic solids

, 2002
A method is presented for the optimization of one-body and inhomogeneous two-body terms in correlated electronic wave functions of Jastrow-Slater type. The most general form of inhomogeneous correlation term which is compatible with crystal symmetry is ...
A. Harju, A. Malatesta, A.J. Williamson, A.J. Williamson, A.J. Williamson, C. Filippi, C.J. Umrigar, C.T. Chan, D. Bohm, D. Bressanini, D. Ceperley, D. Prendergast, D.M. Ceperley, David Bevan, David Prendergast, E. Krotscheck, F. Schautz, L. Hedin, L. Mitas, L.M. Fraser, M. Snajdr, M. Snajdr, M.P. Nightingale, M.T. Yin, P. Hohenberg, P.R.C. Kent, R. Gaudoin, R.Q. Hood, R.Q. Hood, S. Fahy, S. Fahy, Stephen Fahy, T. Kato, W. Kohn, W.L. McMillan, W.M.C. Foulkes, X. Lin   +36 more
core   +1 more source

Electron spectroscopy of carbon materials: Experiment and theory [PDF]

, 2006
We present a comparative spectroscopic study of carbon as graphite, diamond and C60 using C1s K-edge electron energy-loss spectroscopy (EELS), X-ray emission spectroscopy, and theoretical modelling.
A A El-Barbary, A V Okotrub, C J Fall, C P Ewels, Gloter A, L G Bulusheva, Lebedev B V, Li S-Y, M I Heggie, O Stephan, Pickard C J, S Trasobares, Yumatov V D   +12 more
core   +3 more sources

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

Advanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff, Finn‐Lennard Janthur, Sascha Zimmermann, Sarah Seffer, Jörg Hermsdorf, René Gustus, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Christian Klose   +9 more
wiley   +1 more source

The Peculiarities of Acoustic Normal Waves Propagation in Thin Porous Sheets of Thermally Expanded Graphite

Приборы и методы измерений
Thermally expanded graphite belongs to a new class of graphite materials with unique physical, chemical and mechanical properties. Acoustic wave velocity is one of the most important characteristics for study of porous materials including thin porous ...
O. V. Muravieva, A. V. Blinova, L. A. Denisov, O. P. Bogdan   +3 more
doaj   +1 more source

Structure and Crystallinity of Expanded Graphite-Reinforced Carbon Nanocomposite Aerogels and Their Influence on Paraffin Fuel Gases Filtration Efficiency [PDF]

علوم و تکنولوژی پلیمر, 2019
Hypothesis: Aerogels are new nanostructured materials that have attracted much attention in recent decades. In the meantime, polymeric aerogels have found special applications due to their lightness and cost-effectiveness.
Mahmoud Qasemifard, Golnoosh Abdeali, Ahmad Reza Bahramian   +2 more
doaj   +1 more source