Zobrazeno 1 - 10
of 73
pro vyhledávání: '"Virgil Optasanu"'
Autor:
Zohra Msetra, Nawel Khitouni, Abdulrahman Alsawi, Mohamed Khitouni, Virgil Optasanu, Joan-Josep Suñol, Mahmoud Chemingui
Publikováno v:
Journal of Materials Research and Technology, Vol 26, Iss , Pp 8934-8943 (2023)
A nanocrystalline Fe(Co) phase dispersed within an amorphous matrix was achieved after milling of Fe31Co31B30Ta8 powder mixtures up to 200 h by using a high-energy ball mill. The transformations occurring in the powders during milling were studied wi
Externí odkaz:
https://doaj.org/article/84a774a48eda4557b2128a2ef2a9fc7b
Autor:
Marie Garnier, Eric Lesniewska, Virgil Optasanu, Bruno Guelorget, Pascal Berger, Luc Lavisse, Manuel François, Irma Custovic, Nicolas Pocholle, Eric Bourillot
Publikováno v:
Nanomaterials, Vol 14, Iss 7, p 628 (2024)
Conventional techniques that measure the concentration of light elements in metallic materials lack high-resolution performance due to their intrinsic limitation of sensitivity. In that context, scanning microwave microscopy has the potential to sign
Externí odkaz:
https://doaj.org/article/19eac27543794c88814ba73c388506eb
Autor:
Kaouther Zaara, Virgil Optasanu, Sophie Le Gallet, Lluisa Escoda, Joan Saurina, Frédéric Bernard, Mohamed Khitouni, Joan-Josep Suñol, Mahmoud Chemingui
Publikováno v:
Materials, Vol 16, Iss 22, p 7244 (2023)
Soft magnetic Fe65Ni28Mn7 (at. %) alloy was successfully synthesized by mechanical alloying and spark plasma sintering (SPS) and, in parallel, the same composition was prepared by arc melting (AM) for comparison. Several SPS conditions were tested. X
Externí odkaz:
https://doaj.org/article/e6c4f311331040c0a280abad1a98508b
Autor:
Floriant Labarrière, Elizabeth Thomas, Laurine Calistri, Virgil Optasanu, Mathieu Gueugnon, Paul Ornetti, Davy Laroche
Publikováno v:
Sensors, Vol 20, Iss 21, p 6345 (2020)
Locomotion assistive devices equipped with a microprocessor can potentially automatically adapt their behavior when the user is transitioning from one locomotion mode to another. Many developments in the field have come from machine learning driven c
Externí odkaz:
https://doaj.org/article/ea1f68194a5c460abbf4b0f39b1e7bfc
Autor:
Kaouther Zaara, Mahmoud Chemingui, Sophie Le Gallet, Yves Gaillard, Lluisa Escoda, Joan Saurina, Joan Josep Suñol, Frédéric Bernard, Mohamed Khitouni, Virgil Optasanu
Publikováno v:
Crystals, Vol 10, Iss 10, p 929 (2020)
A FeCoNi(B0.5Si0.5) high-entropy alloy with the face-centered cubic (FCC) crystal structure was synthesized by mechanical alloying and spark plasma sintering (SPS). Phase evolution, microstructure, morphology and annealing behaviors were investigated
Externí odkaz:
https://doaj.org/article/f7e704bda0ea4a65ac466228a0726320
Autor:
Benjamin Vincent, Sébastien Chevalier, Tony Montesin, L. Lavisse, Frédéric Herbst, Ioana Popa, Virgil Optasanu
Publikováno v:
Oxidation of Metals. 96:283-294
Isothermal oxidation tests were performed on Ti6242S (Ti—6% Al—2% Sn—4% Zr—2% Mo, 0.08% Si), Ti6246 (Ti—6% Al—2% Sn—4% Zr—6% Mo, 0.05% Si), TiXT (Ti—0.45% Si) alloys and pure titanium in laboratory air at 560 °C, 600 °C and 650 °
Publikováno v:
Oxidation of Metals. 96:257-270
Isothermal oxidation tests of mechanically treated Ti-Beta-21S (TIMET, Ti–15Mo–3Nb–3Al–2Si, ASTM Grade 21) were performed under dry air at 650, 700 and 750 °C for 100 h and compared to untreated samples. Two different mechanical surface trea
Publikováno v:
International Journal of Minerals, Metallurgy, and Materials. 26:1129-1139
This work concerns the structural evolution of Cu70Nb20Al10 (at%) alloy processed by mechanical alloying using a planetary ball mill in air atmosphere for different times (4 to 200 h). The morphological, structural, micro structural, and thermal beha
Publikováno v:
© Journal of Thermal Analysis and Calorimetry, 2020, vol. 139, núm. 5, p. 3065-3072
Articles publicats (D-F)
Ameur, Rim Chemingui, Mahmoud Bachaga, Tarek Optasanu, Virgil Suñol Martínez, Joan Josep Khitouni, Mohamed 2020 Thermal and structural analysis of Ni 50 Mn 50− x In x shape memory alloys Journal of Thermal Analysis and Calorimetry 139 5 3065 3072
DUGiDocs – Universitat de Girona
instname
Articles publicats (D-F)
Ameur, Rim Chemingui, Mahmoud Bachaga, Tarek Optasanu, Virgil Suñol Martínez, Joan Josep Khitouni, Mohamed 2020 Thermal and structural analysis of Ni 50 Mn 50− x In x shape memory alloys Journal of Thermal Analysis and Calorimetry 139 5 3065 3072
DUGiDocs – Universitat de Girona
instname
In the present study, the Ni50Mn50−xInx (x = 12, 13 and 14 at.%) shape memory alloys were obtained by rapid solidification. The martensitic transformation and the solidification structures of these alloys were carried out by scanning electron micro
Publikováno v:
Materials Characterization. 153:190-198
Aluminum‑silicon (Al Si) alloys of high silicon contents are composite materials; they are used whenever high casting properties are required. They are slightly ductile below 8wt%Si. An increase in ductility can be obtained by refining Si-crystals