Results 81 to 90 of about 244,799 (302)

Scaling Theory and Numerical Simulations of Aerogel Sintering

, 1995
A simple scaling theory for the sintering of fractal aerogels is presented. The densification at small scales is described by an increase of the lower cut-off length $a$ accompanied by a decrease of the upper cut-off length $\xi$, in order to conserve ...
Anwar Hasmy, Daniel Bourret, Frenkel, Hasmy, Hasmy, Hasmy, Jean Phalippou, Jullien, Kingery, Kolb, Ma, Mackenzie, Mandelbrot, Meakin, Nathalie Olivi-Train, Robert Sempéré, Rémi Jullien, Scherer, Scherer, Scherer, Sempéré, Thierry Woignier   +21 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

Processing and Ductile-Brittle Transitions in PM Manganese Steels [PDF]

, 2005
YesBrittleness in manganese steels can be associated with processing in a "wet¿ [micro]climate resulting in the formation of continuous oxide networks.
Cias, A., Mitchell, Stephen C.
core  

Solid Freeform Fabrication of Functional Silicon Nitride Ceramics by Laminated Object Manufacturing 1 [PDF]

, 2000
The processing of silicon nitride (Si3N4) structural ceramics by Laminated Object Manufacturing (LOM) using ceramic tape preforms was investigated. The key processing stages involved green shape formation (which used the LOM process), followed by the ...
Agarwala, M., Chartoff, R. P., Hecht, N., Klosterman, D. A., Rodrigues, S. J.   +4 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

3Y-TZP/Ta Biocermet as a Dental Material: An Analysis of the In Vitro Adherence of Streptococcus Oralis Biofilm and an In Vivo Pilot Study in Dogs

Antibiotics
The surface adhesion of bacterial cells and the in vivo biocompatibility of a new ceramic–metal composite made of zirconium dioxide and tantalum were evaluated.
Anton Smirnov, Oleg Yanushevich, Natella Krikheli, Nestor Washington Solis Pinargote, Pavel Peretyagin, Sergey Grigoriev, Luis Alou, David Sevillano, Roberto López-Piriz, Francisco Guitian, José Florindo Bartolomé   +10 more
doaj   +1 more source

Principles of Laser Micro Sintering [PDF]

, 2006
Laser Micro Sintering was introduced to the international community of freeform fabrication engineers in 2003 and has since been employed for a variety of applications.
Brabant, Th., Ebert, R., Exner, H., Hartwig, L., Horn, M., Klötzer, S., Regenfuss, P., Streek, A.   +7 more
core   +1 more source

Pyramidal Structures on Yttria‐Stabilized Zirconia after High Temperature Exposure at 1500°C: New Features on an Old Material

Advanced Engineering Materials, EarlyView.
New features on yttria‐stabilized zirconia after exposure at 1500°C: Newly discovered pyramidal structures on an old material. After exposure at 1550°C on the cross section of YSZ new features, namely pyramidal structures are discovered. These structures grow with time, increase in numbers, appear as singularities, are often arranged in strings, and ...
Doris Sebold, Dylan Jennings, Robert Vaßen   +2 more
wiley   +1 more source

Removal of 2,4-Dichlorophenoxyacetic Acid from Aqueous Solutions Using Al₂O₃/Graphene Oxide Granules Prepared by Spray-Drying Method

Resources
Within this study, aluminum oxide granules with 0.25%vol. of graphene oxide were prepared by a spray-drying method to make an adsorbent for the 2,4-Dichlorophenoxyacetic acid (2,4-D) herbicide removal from aqueous solutions.
Alexandra Yu. Kurmysheva, Ekaterina Kuznetsova, Marina D. Vedenyapina, Pavel Podrabinnik, Nestor Washington Solís Pinargote, Anton Smirnov, Sergey N. Grigoriev   +6 more
doaj   +1 more source

Optimization of received power and SNR for an indoor attocells network in visible light communication [PDF]

, 2019
White LEDs Visible Light Communication (VLC) is applied in communication and illumination simultaneously. It provides unrestrained frequency spectrum and a large bandwidth that produces a higher transmission rate and speed in short-range communication ...
Abdullah, Mohammad Faiz Liew, Mohammed Gismalla, Mohammed Salih   +1 more
core   +1 more source