Results 41 to 50 of about 10,946 (217)

Percolation of single-walled carbon nanotubes in ceramic matrix nanocomposites [PDF]

, 2004
The percolation of carbon nanotubes (CNT) in an electrical insulating ceramic is studied for the first time. The in situ synthesis of the CNT (0.2–25 vol%) by a CCVD route allows to achieve their homogeneous distribution in the spinel matrix.
Capria, Ennio, Laurent, Christophe, Lefèvre-Schlick, Florent, Peigney, Alain, Rul, Sébastien   +4 more
core   +4 more sources

Evaluation of CuO/MgAl2O4 in Biomass Chemical Looping Gasification with Oxygen Uncoupling

BioResources, 2016
Chemical looping gasification (CLG) is a promising method for the utilization of biomass to produce syngas. However, its realization is largely dependent on the use of an oxygen carrier with a high and stable reactivity in cyclic reduction and oxidation.
Jingyu Ran, Fanxuan Fu, Changlei Qin, Peng Zhang, Lili Yang, Wending Wang, Lin Yang   +6 more
doaj   +1 more source

Interface and electronic characterization of thin epitaxial Co3O4 films

, 2008
The interface and electronic structure of thin (~20-74 nm) Co3O4(110) epitaxial films grown by oxygen-assisted molecular beam epitaxy on MgAl2O4(110) single crystal substrates have been investigated by means of real and reciprocal space techniques.
Albers, Albrecht, Anton, B.J. Albers, Bizette, Bizette, Blanchetais, Bonnelle, Burriel, C.A.F. Vaz, C.H. Ahn, Carson, Chuang, Daams, Davies, E.I. Altman, Fang, Gajdardziska-Josifovska, Gao, Giessibl, Giessibl, Goniakowski, H.-Q. Wang, Haber, Hagelin-Weaver, Harding, Harrison, Ito, J. Wang, Jauch, Jiménez, Jugnet, Klingenberg, Klingenberg, Kolotyrkin, Koumoto, Kunat, Kunat, L.H. Zhang, Langell, Lazarov, M.Z. Baykara, N. Pilet, Noguera, Oku, Petitto, Picard, Przybylski, Rooth, Roth, Roth, Scheerlink, Schwingenschlögl, Shull, T.C. Schwendemann, Tasker, Tripp, U.D. Schwarz, V.E. Henrich, Wang, Wöll, Wöll, Y. Zhu, Yamamoto   +63 more
core   +1 more source

Effect of intensive melt shearing on the formation of Fe-containing intermetallics in LM24 Al-alloy [PDF]

, 2012
Fe is one of the inevitable and detrimental impurities in aluminium alloys that degrade the mechanical performance of castings. In the present work, intensive melt shearing has been demonstrated to modify the morphology of Fe-containing intermetallic ...
Backerud L, Barlock J G, Cao X, Couture A, Crepeau P N, Davignon G, Fan Z, Fan Z, Gobrech J, H T Li, Jorstad J L, Khalifa W, M Xia, Mondolfo L F, Murty B S, S Ji, Shabestari S G, Villars P, Wang L, Y Wang, Z Fan   +20 more
core   +1 more source

Formation and aggregation behavior of inclusions in Ni-based alloys with different Mg contents

Journal of Materials Research and Technology, 2023
Large non-metallic inclusions affect the mechanical properties and service life of nickel-based superalloys. This study investigates the effects of magnesium elements on non-metallic inclusions in K4169 nickel-based superalloys, exploring the formation ...
Ruizhi Gao, Lin Li, Chaoyi Chen, Junqi Li, Linzhu Wang, Xiang Li, Hui Yang   +6 more
doaj   +1 more source

Exchange bias and interface electronic structure in Ni/Co3O4(011) [PDF]

, 2010
A detailed study of the exchange bias effect and the interfacial electronic structure in Ni/Co3O4(011) is reported. Large exchange anisotropies are observed at low temperatures, and the exchange bias effect persists to temperatures well above the Neel ...
A. G. Every, C. A. F. Vaz, C. Binek, C. J. Powell, E. I. Altman, F. Radu, H. Bizette, H. P. J. Wijn, M. B. Stearns, T. B. Reed, V. E. Henrich   +10 more
core   +1 more source

Four‐Point Bending Tests at High Temperatures on Commercial MgO‐C Refractory Bricks with and Without Recyclate Considering Different Carbon Contents

Advanced Engineering Materials, EarlyView.
Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm, Lukas Knöchel, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +5 more
wiley   +1 more source

Identification of Humidity Sensing Mechanism in MgAl2O4 by Impedance Spectroscopy as Function of Relative Humidity [PDF]

Materials Research, 2018
MgAl2O4 is a humidity sensing material, which high melting point requires high sintering temperatures. In this work, manganese oxide was used as a sintering aid to obtain MgAl2O4 samples sintered at 1350°C with a microstructure suitable for humidity ...
Guilherme Baltar Crochemore, Amadeu Rodrigues Pereira Ito, Celso Antonio Goulart, Dulcina Pinatti Ferreira de Souza   +3 more
doaj   +2 more sources

Dilatometric characteristics of weakly sintered ceramics

Chimica Techno Acta, 2022
Thermal expansion of refractory ceramics CaZrO3, MgAl2O4, La2Zr2O7 and YSZ-12 was studied. The samples of the complex oxides were synthesized by solution combustion synthesis with glycine; the fuel:oxidant ratio was varied depending on the character of ...
Yury I. Komolikov, Larisa V. Ermakova, Vladimir R. Khrustov, Victor D. Zhuravlev   +3 more
doaj   +1 more source

Large perpendicular magnetic anisotropy in epitaxial Fe/MgAl2O4(001) heterostructures

, 2018
We investigated perpendicular magnetic anisotropy (PMA) and related properties of epitaxial Fe (0.7 nm)/MgAl2O4(001) heterostructures prepared by electron-beam evaporation.
Mandal, Ruma, Mitani, Seiji, Sukegawa, Hiroaki, Takahashi, Yukiko K., Xiang, Qingyi   +4 more
core   +1 more source