Search Results - "Le Caër, G"

Kinetics and Mechanisms of Phase Transformations Induced by Ball-Milling in Anatase TiO2 by Bégin-Colin, S., Girot, T., Le Caër, G., Mocellin, A.

“…Ball-milling is a way of inducing phase transformations, chemical reactions, and changes in the reactivity of solids. It is a complex process for which several…”
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Nanorods of HfB2 from mechanically-activated HfCl4 and B-based powder mixtures by BARRAUD, E, BEGIN-COLIN, S, LE CAËR, G

“…Besides being an established method of synthesis of nanomaterials and a method for inducing chemical reactions during grinding, high-energy ball-milling is…”
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Mechanically activated synthesis of ultrafine rods of HfB2 and milling induced phase transformation of monocrystalline anatase particles by Begin-Colin, S, Le Caer, G, Barraud, E, Humbert, O

“…The mechanically activated synthesis of hafnium diboride HfB2 from partially hydrated hafnium tetrachloride “HfCl4” is first described. Monocrystalline rods…”
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Mechanical alloying during cryomilling of a 5000 Al alloy/AlN powder: the effect of contamination by Goujon, C, Goeuriot, P, Delcroix, P, Le Caër, G

“…Elemental powders of 80 vol% 5000 Al alloy (3 wt% Mg) and 20 vol% AlN were milled either in liquid nitrogen or at room temperature under argon. The milling of…”
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Distribution of the determinant of a random real-symmetric matrix from the gaussian orthogonal ensemble by Delannay, R, Le Caer G

“…The Mellin transform of the probability density of the determinant of NxN random real-symmetric matrices from the Gaussian orthogonal ensemble is calculated…”
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Control of grain size and morphologies of nanograined ferrites by adaptation of the synthesis route: mechanosynthesis and soft chemistry by Guigue-Millot, N., Bégin-Colin, S., Champion, Y., Hÿtch, M.J., Le Caër, G., Perriat, P.

“…Nanocrystalline Fe-based spinels with composition Fe 2.5Ti 0.5O 4 can be synthesized using two different routes: soft chemistry and high-energy ball milling…”
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B2 long-range order in mechanically alloyed Fe53.3−0.6x Co46.7−0.4x Sn x (2 ≤ x ≤ 26) annealed at moderate temperatures by Malaman, B., Le Caër, G., Costa, B. F. O.

“…Recent interest in Fe–Co–Sn alloys stems from Heusler alloys. A Co2FeSn Heusler alloy is found to be unstable relative to other phases from ab initio…”
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Influence of milling conditions on the FeAl intermetallic formation by mechanical alloying by Wolski, K., Caër, G. Le, Delcroix, P., Fillit, R., Thévenot, F., Coze, J. Le

“…The formation of FeAl intermetallic compound by mechanical alloying has been investigated as a function of milling time. Mixtures of elemental powders of Fe…”
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Kinetics and formation mechanisms of the nanocomposite powder Ag-SnO2 prepared by reactive milling by LORRAIN, N, CHAFFRON, L, CARRY, C, DELCROIX, P, LE CAËR, G

“…A nanocomposite powder Ag-SnO2 was produced at room temperature by reactive ball-milling of mixtures of powders of silver bronze (Ag3Sn) and of silver oxide…”
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Some consequences of exchangeability in random-matrix theory by Le Caër, G, Delannay, R

“…Properties of infinite sequences of exchangeable random variables result directly in explicit expressions for calculating asymptotic densities of eigenvalues…”
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Mechanosynthesis of bcc alloys from Fe50−y/2Co50−y/2Sn y mixtures (2 ≤ y ≤ 33) and B2 ordering by annealing at modest temperatures by Costa, B. F. O., Malaman, B., Caër, G. Le, Gordo, P. M., Ramalho, A.

“…Elemental powder mixtures of Fe, Co and Sn of initial compositions Fe50−y/2Co50−y/2Sny(2 ≤y ≤ 26) are ball-milled at high-energy. They yield metastable alloys…”
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Microstructural and kinetic aspects of the transformations induced in a FeAl alloy by ball-milling and thermal treatments by Gialanella, S., Amils, X., Barò, M.D., Delcroix, P., Le Caër, G., Lutterotti, L., Suriñach, S.

“…A Fe–40Al (at.%) alloy powder having a B2 ordered structure was milled in a high energy planetary ball-mill. The microstructural evolution of the alloy was…”
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Mossbauer studies of phase separation in nanocrystalline Fe0.55-xCr0.45SnX alloys prepared by mechanical alloying by COSTA, B. F. O, LE CAËR, G, LUVSSAERT, B

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Mechanosynthesis of supersaturated solid solutions of Sn in near-equiatomic bcc FeCo by Loureiro, J.M., Costa, B.F.O., Le Caër, G.

“…► (Fe50−x/2Co50−x/2)Snx mixtures are mechanically alloyed for x≤33at.%. ► As-ground powders are studied by X-ray diffraction and 57Fe and 119Sn Mössbauer…”
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Magnetic properties of coarse-grained and nanocrystalline Fe–Cr–Sn alloys by Costa, B.F.O, Le Caër, G, Amado, M.M, Sousa, J.B, Ayres de Campos, N

“…Magnetic properties of coarse-grained and of nanocrystalline mechanically alloyed Fe–Cr–Sn alloys are investigated. The average magnetic moment, the coercive…”
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Mechanically activated solid-state synthesis of hafnium carbide and hafnium nitride nanoparticles by Barraud, E., Bégin-Colin, S., Le Caër, G., Barres, O., Villieras, F.

“…Nanocrystalline hafnium nitrides and hafnium carbides are synthesized, from powder mixtures based on partially hydrated hafnium tetrachloride, ph-HfCl 4, and…”
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Structure, Cation Distribution, and Properties of Nanocrystalline Titanomagnetites Obtained by Mechanosynthesis: Comparison with Soft Chemistry by Millot, N., Begin-Colin, S., Perriat, P., Le Caër, G.

“…Nanocrystalline Fe-based spinels with composition Fe2.5Ti0.5O4were synthesized using two different routes: soft chemistry and high-energy ball milling. In the…”
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Influence of the nature of milling media on phase transformations induced by grinding in some oxides by Begin-Colin, S., Le Caër, G., Zandona, M., Bouzy, E., Malaman, B.

“…Polymorphic transformations induced by dry ball milling in an argon atmosphere have been investigated in various oxides (TiO 2, SnO 2, Y 2O 3, WO 3) by X-ray…”
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Heterogeneous dynamics of a granular pack under vertical tapping by Kiesgen de Richter, S, Le Caër, G, Delannay, R

“…The dynamics of a tri-dimensional dense granular packing under gravity and vertical tapping is numerically investigated in a stationary state. A slowing-down…”
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Thermal decomposition of HfCl4 as a function of its hydration state by BARRAUD, E, BEGIN-COLIN, S, LE CAËR, G, VILLIERAS, F, BARRES, O

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