Results 81 to 90 of about 350,468 (289)

Microstructure Design of Steel‐Spinel Composites via Spark Plasma Sintering Process

Advanced Engineering Materials, EarlyView.
This study illustrates how spark plasma sintering at reduced oxygen partial pressure enables controlled formation of steel‐spinel composites through tailored redox reactions and cation exchange. Comparison of the MgO–Fe2O3, steel–(MgO+Cr2O3), and steel–(MgO+Fe2O3) systems shows how oxygen activity and interface chemistry govern spinel formation, phase ...
Mahnaz Mehdizadehlima, Christian Schimpf, Stefan Martin, Olga Fabrichnaya, David Rafaja   +4 more
wiley   +1 more source

Gas Pressure Driven Screening Forces and Pebble Aggregation: A Pathway for Growth in Planet Formation

The Astrophysical Journal
The formation of planetesimals from centimeter-sized pebbles in protoplanetary disks faces significant barriers, including fragmentation and radial drift.
Mukesh Kumar Vyas
doaj   +1 more source

High-contrast imaging constraints on gas giant planet formation - The Herbig Ae/Be star opportunity

, 2015
Planet formation studies are often focused on solar-type stars, implicitly considering our Sun as reference point. This approach overlooks, however, that Herbig Ae/Be stars are in some sense much better targets to study planet formation processes ...
A. Boccaletti, A. Garufi, A. Garufi, A. Vigan, A.-M. Lagrange, A.-M. Lagrange, A.J. Skemer, A.L. Kraus, A.P. Verhoeff, A.S. Hales, A.W. Howard, B. Acke, B. Biller, B. Macintosh, B.A. Biller, B.P. Bowler, B.R. Oppenheimer, C. Marois, C. Marois, C. Marois, C. Pinte, C. Walsh, C.A. Grady, C.A. Grady, C.A. Grady, D.R. Ardila, D.S. Spiegel, E. Pantin, E.L. Nielsen, F. Fressin, F. Joos, F. Pepe, G. Chauvin, G. Witzel, G.D. Mulders, G.M. Kennedy, H. Avenhaus, H. Avenhaus, H. Canovas, H.M. Schmid, H.M. Schmid, I. Baraffe, J. Bouwman, J. Carson, J. Hashimoto, J. Rameau, J. Rameau, J. Rameau, J. Rameau, J. Tinbergen, J.-L. Beuzit, J.-L. Beuzit, J.A. Johnson, J.A. Johnson, J.A. Johnson, J.A. Johnson, J.C. Augereau, J.E. Pineda, J.M. Brown, J.R. Crepp, J.R. Kuhn, K.B. Follette, K.B. Follette, K.I. Öberg, K.M. Kratter, L.M. Close, L.M. Pérez, M. Fukagawa, M. Janson, M. Juan Ovelar de, M. Lambrechts, M. Min, M. Momose, M. Osorio, M. Reggiani, M.D. Perrin, M.S. Marley, N. Kusakabe, P. Pinilla, P. Pinilla, Q.M. Konopacky, R. Dong, S. Casassus, S. Hinkley, S. Ida, S. Reffert, S.D. Brittain, S.D. Brittain, S.M. Andrews, S.P. Quanz, S.P. Quanz, S.P. Quanz, S.P. Quanz, Sascha P. Quanz, T. Currie, T. Muto, T.J. Rodigas, W.J. Borucki, Z. Zhu, Z. Zhu   +99 more
core   +1 more source

Production of MgO/TiC Composites From MgO‐C Recyclates Using Spark Plasma Sintering

Advanced Engineering Materials, EarlyView.
Using the spark plasma sintering technique, MgO/TiC composites are manufactured from recycled MgO‐C refractories stemming from the steel production that were mixed with titanium powder. This article shows, how the size of the Ti grains and their distribution in the powder mixture affect the local carbon concentration in TiC.
Jiayan Yu, Christian Schimpf, Stefan Martin, David Rafaja   +3 more
wiley   +1 more source

Copper Nanocrystallization in Anodic Oxide Films of Ti–Cu‐Based Bulk Metallic Glass and Its Effect on the Corrosion Resistance and Cytocompatibility

Advanced Engineering Materials, EarlyView.
Viktoriia Shtefan, Thorgund Nemec, Ute Hempel, Annett Gebert and coworkers demonstrate that anodic treatment of Ti–Cu‐based metallic glass in a nontoxic pyrophosphate electrolyte forms a protective bilayered Ti/Zr‐oxide film enriched with Cu nanocrystals.
Viktoriia Shtefan, Nora Fernández Navas, Thorgund Nemec, Ivan Kaban, Ute Hempel, Andrea Voss, Volker Hoffmann, Darius Pohl, Annett Gebert   +8 more
wiley   +1 more source

Direct Metal Deposition of Graphene–Ti28Nb35.4Zr Matrix Composites With Enhanced Mechanical, Corrosion, and Biocompatibility Properties for Bone Implants

Advanced Engineering Materials, EarlyView.
Graphene nanoplatelet (0.1 wt.%) reinforcement significantly enhances the performance of β Ti‐28Nb‐35.4Zr alloy. Grain refinement, reduced water contact angle, and improved surface characteristics promote osteoblast adhesion and complete surface coverage after 7 days.
Khurram Munir, Jixing Lin, Yuncang Li, Li Zhu, Paul F. A. Wright, Cuie Wen   +5 more
wiley   +1 more source

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

Advanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar, Akash Vyas, Mohammad Aatif Qazi, Nashit Jalal, Maria Ophelia Jarligo, Mostafa Yakout, Jing Liu, André McDonald   +7 more
wiley   +1 more source

Inside-out Planet Formation. VIII. Onset of Planet Formation and the Transition Disk Phase

The Astrophysical Journal
Inside-out planet formation (IOPF) is a theory of in situ formation via pebble accretion of close-in Earth to super-Earth mass planets at the pressure maximum associated with the dead zone inner boundary (DZIB), whose location is set initially by thermal
Xiao Hu, Jonathan C. Tan
doaj   +1 more source

Impact of planet--planet scattering on the formation and survival of debris disks

, 2014
Planet--planet scattering is a major dynamical mechanism able to significantly alter the architecture of a planetary system. In addition to that, it may also affect the formation and retention of a debris disk by the system.
Marzari, F.
core   +1 more source

Cathodic Cage Plasma Deposition of Nanostructured Cu–Fe–Se Coatings on Poly(methyl Methacrylate)

Advanced Engineering Materials, EarlyView.
Nanostructured Cu–Fe–Se coatings are deposited on PMMA by a modified cathodic cage plasma process, enabling low‐temperature deposition on polymer substrates. A transition from discontinuous to compact morphology is observed with temperature, with optimal properties at 200°C, where improved CuFeSe2‐type bonding, lowest sheet resistance, and favorable ...
V. S. S. Sobrinho, M. Naeem, T. H. C. Costa, M. S. Libório, J. C. A. Queiroz, C. B. B. Luna, R. R. M. Sousa, P. S. Vieira, E. M. Araújo   +8 more
wiley   +1 more source