Search Results - "Betancur, J. D."

Magnetism in non-stoichiometric goethite of varying total water content and surface area by Barrero, C. A., Betancur, J. D., Greneche, J. M., Goya, G. F., Berquó, T. S.

“…In this work, the magnetic properties of four non-stoichiometric goethites with varying total water content and surface area have been investigated. The…”
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Optimal Design of Transmission Shafts Using a Vortex Search Algorithm by Rodriguez-Cabal, M. A., Betancur-Gómez, J. D., Grisales-Noreña, L. F., Montoya, Oscar Danilo, Hincapie, Diego

“…This paper analyzes the problem of optimally sizing a transmission shaft via the vortex search algorithm (VSA) optimizer. The objective function was to…”
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The effect of water content on the magnetic and structural properties of goethite by Betancur, J.D, Barrero, C.A, Greneche, J.M, Goya, G.F

“…We have studied the effect of water content on the magnetic and structural properties of goethite. For that purpose, four samples were prepared using two…”
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Effect of Si on the magnetic properties of the Fe70Al30 alloy by PEREZ ALCAZAR, G. A, ZAMORA, Ligia. E, BETANCUR-RIOS, J. D, TABARES, J. A, GRENECHE, J. M, GONZILEZ, J. M

“…(Fe70Al30)100-xSix (x=0, 5, 10 and 20) alloys were obtained by mechanical milling for durations of 12, 24 and 36h. They were studied by X-ray diffraction…”
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Thermal oxidation behaviors and structures of Fe-9Cr-1Mo alloy by Betancur, J. D., Alcazar, G. A. Pérez, Nomura, K., Wang, C. J., Tabares, J. A.

“…Isothermal oxidation behaviors of Fe-9Cr-1Mo alloy were investigated at 600, 700, 750 and 850 ∘ C for 72 h in air atmosphere. The oxidation rates were measured…”
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Thermally Driven and Ball-Milled Hematite to Magnetite Transformation by Betancur, J. D., Restrepo, J., Palacio, C. A., Morales, A. L., Mazo-Zuluaga, J., Fernández, J. J., Pérez, O., Valderruten, J. F., Bohórquez, A.

“…In this work, a study on the dynamics of transformation from hematite (α-Fe2O3) to magnetite (Fe3O4) by following two solid-state reaction methods is carried…”
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Study of the effect of Mn and Cu in Fe–Mn–Al–C–Cu alloys by ICEMS and XRD by Betancur-Ríos, J. D., Tabares, J. A., Pérez Alcázar, G. A., Rodríguez, V. F.

“…Experimental analysis of magnetic and structural properties of Fe–Mn–Al–C–Cu alloys with compositions FexMn0.915 − xAl0.075C0.01 (series A) and FexMn0.912 −…”
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ICEMS study of isothermal oxidation of Fe–Mn–Al–C–Cr–Si–Mo, Fe–Mn–Al–C–Cr–Si and Fe–9Cr–1Mo alloys by Betancur-Rios, J. D., Nomura, K., Wang, C. J., Pérez Alcazar, G. A., Tabares, J. A.

“…The purpose of this paper is to investigate the isothermal behavior of Fe–27.3Mn–7.6Al–C–6.5Cr–0.25Si–0.88Mo (Mo(0)) and Fe–27.3Mn–7.6Al–1.0C–6.5Cr–0.25Si…”
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Disorder effect on the magnetic behavior of mechanically alloyed Fe 1 − x Al x ( 0.2 ⩽ x ⩽ 0.4 ) by Zamora, Ligia E., Pérez Alcázar, G. A., Vélez, G. Y., Betancur, J. D., Marco, J. F., Romero, J. J., Martínez, A., Palomares, F. J., González, J. M.

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