Search Results - "Rivoirard, S"

Experimental evidence and thermodynamics analysis of high magnetic field effects on the austenite to ferrite transformation temperature in Fe–C–Mn alloys by Garcin, T., Rivoirard, S., Elgoyhen, C., Beaugnon, E.

“…The non-isothermal decomposition of austenite into ferrite and pearlite in Fe– xC–1.5 wt.% Mn steels with x = 0.1, 0.2 and 0.3 wt.% C is investigated by in…”
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Additive manufacturing of an Fe–Cr–Co permanent magnet alloy with a novel approach of in-situ alloying by Arneitz, S., Buzolin, R., Rivoirard, S., Sommitsch, C.

“…Additive manufacturing has become increasingly important in the production of magnetic materials in recent years due to the great demands for miniaturization…”
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Dehydrogenation process and thermal stability of Mg-Ti-H films in-situ hydrogenated by microwave reactive plasma-assisted co-sputtering technique by Iliescu, I., Skryabina, N., Fruchart, D., Bes, A., Rivoirard, S., de Rango, P., Lacoste, A.

“…In-situ hydrogenated Mg-Ti-H films with different Ti contents (0 ≤ at.% Ti ≤ 19.5) were deposited in a single-step process using the microwave reactive…”
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Entropy change of a Ni45.5Co4.5Mn37In13 single crystal studied by scanning calorimetry in high magnetic fields: Field dependence of the magnetocaloric effect by Bourgault, D., Porcar, L., Rivoirard, S., Courtois, P., Hardy, V.

“…By using differential scanning calorimetry, direct entropy variations have been recorded along the martensitic transformation of a Ni45.5Co4.5Mn37In13 single…”
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Hydrogenation of transition element additives (Ti, V) during ball milling of magnesium hydride by Charbonnier, J., de Rango, P., Fruchart, D., Miraglia, S., Pontonnier, L., Rivoirard, S., Skryabina, N., Vulliet, P.

“…It has been revealed that ball-milling of MgH2 powders with small amounts of selected 3d-transition metals M such as Ti, Nb, … or oxides of 3d-metals (e.g…”
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Nanostructured magnesium hydride for pilot tank development by de Rango, P., Chaise, A., Charbonnier, J., Fruchart, D., Jehan, M., Marty, Ph, Miraglia, S., Rivoirard, S., Skryabina, N.

“…The aim of the present work was a systematic investigation on MgH 2 co-milled with transition metals M, in order to develop large batches of suitable materials…”
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Hydrogen sorption properties of compounds based on BCC Ti1−xV1−yCr1+x+y alloys by Miraglia, S., de Rango, P., Rivoirard, S., Fruchart, D., Charbonnier, J., Skryabina, N.

“…► Composites based on Ti–Cr–V BCC-type alloys with the addition of a minor fraction of Zr7Ni10 was successfully realized. ► The resulting material exhibits a…”
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Catalytic effect of additives on the hydrogen absorption properties of nano-crystalline MgH2(X) composites by Rivoirard, S, de Rango, P, Fruchart, D, Charbonnier, J, Vempaire, D

“…Hydrogen sorption properties of MgH2–X nanocomposite powders (X=V, Nb, Ti, TiCN) are conditioned by the milling step. The respective roles of the additives and…”
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Structural analysis of activated Mg(Nb)H 2 by Charbonnier, J., de Rango, P., Fruchart, D., Miraglia, S., Skryabina, N., Huot, J., Hauback, B., Pitt, M., Rivoirard, S.

“…A metastable niobium hydride, believed to trigger rapid H desorption from the MgH 2 matrix, was detected in the course of real time synchrotron diffraction…”
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Magnetic Blowing of Break Arcs up to 360 VDC by Vassa, A, Carvou, E, Rivoirard, S, Doublet, L, Bourda, C, Jeannot, D, Ramoni, P, Jemaa, N B, Givord, D

“…The phenomenon of magnetic blowing allows drastic reduction in arc duration. It is of specific interest in DC applications, more specifically in automotive…”
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Structural analysis of activated Mg(Nb)H2 by Charbonnier, J., de Rango, P., Fruchart, D., Miraglia, S., Skryabina, N., Huot, J., Hauback, B., Pitt, M., Rivoirard, S.

“…A metastable niobium hydride, believed to trigger rapid H desorption from the MgH2 matrix, was detected in the course of real time synchrotron diffraction…”
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In situ neutron diffraction study of the nitrogenation process applied to NdFe10.5V1.5 alloys by POPA, I, RIVOIRARD, S, DE RANGO, P, FRUCHART, D

“…The RFe12-XMX compounds (R=Pr, Nd; M=Ti, V, Cr, Mn, Mo, Nb), known as the 1:12 phases, are interesting as potential permanent magnets due to their high…”
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High-speed forged NdFe12−XVX compounds for bonded magnets by Popa, I., de Rango, P., Fruchart, D., Rivoirard, S.

“…A high-speed Forging process was applied to NdFe10.5V1.5 compounds. As-cast samples presented a major alpha-(Fe, V) phase and a Nd-rich phase, whereas samples…”
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Role of Zr and Ga additions on the hydrogen process of Nd–Fe–B magnets by de Rango, P, Rivoirard, S, Traverse, A, Fruchart, D, Genin, F.N

“…Highly coercive Nd–Fe–B powders for bonded magnets have been successfully produced applying hydrogen processes such as hydrogen decrepitation (HD) or…”
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Investigation of polycrystalline Nd2Fe14B texturing by solidification in a magnetic field by PADUANI, C, DUCRUET, C, RIVOIRARD, S, DE RANGO, P, TOURNIER, R

“…A polycrystalline sample of Nd2Fe14B was prepared by induction melting and solidification in an intense applied magnetic field, to study the alignment due to…”
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Rheological study of hot-forged NdFeB and related permanent magnet properties by Rivoirard, S, de Rango, P, Fruchart, D, Chastel, Y, Martin, C.L

“…For the first time, forging at very high strain rates ( ε ̇ >100 s −1) has been used successfully to produce magnets directly from bulk Nd–Fe–B–Cu alloy. This…”
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Intrinsic magnetic properties of Nd16Fe72-xCoxC11B carbides by PADUANI, C, RIVOIRARD, S, SOUBEYROUX, J.-L, DE RANGO, P, TOURNIER, R

“…An investigation of the magnetic properties of the Nd16Fe72-xCoxC11B series is described. The as-cast alloys show the coexistence in equilibrium of the…”
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Localisation of Zr in Nd–Fe–B alloys by de Rango, P., Genin, F.N., Fruchart, D., Traverse, A., Rivoirard, S., Popa, I.

“…X-ray absorption fine structure measurements and thermomagnetic measurements were performed in order to localise zirconium in Nd–Fe–B-based alloys. These…”
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DC-arc blowing under pulsed magnetic field by Vassa, A, Carvou, E, Rivoirard, S, Doublet, L, Bourda, C, Ben Jemaa, N, Givord, D

“…The behavior of the arc formed during electrical circuit opening is examined, in the presence of a pulsed magnetic field. The field is applied in the…”
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HDDR process of NdFeB with an excess of intergranular Nd-rich phase under magnetic field by Liesert, S., Fruchart, D., de Rango, P., Rivoirard, S., Soubeyroux, J.L., Perrier de la Bâthie, R., Tournier, R.

“…High coercive isotropic NdFeB powders can be obtained using the hydrogenation-disproportionation-desorption-recombination (HDDR) process. In order to produce…”
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