Co-based alloy brazing incorporating tungsten nanoparticles

dc.creatorMARCELA NOHEMI IBARRA CASTRO
dc.creatorHECTOR MANUEL HERNANDEZ GARCIA
dc.creatorJOSE MANUEL ALMANZA ROBLES
dc.creatorRITA MUÑOZ ARROYO
dc.creatorJORGE LEOBARDO ACEVEDO DAVILA
dc.creatorCARLOS ALBERTO GUEVARA CHAVEZ
dc.creatorLOURDES SANTIAGO BAUTISTA
dc.date2015-03
dc.date.accessioned2023-07-20T18:56:35Z
dc.date.available2023-07-20T18:56:35Z
dc.identifierhttp://comimsa.repositorioinstitucional.mx/jspui/handle/1022/143
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7720936
dc.descriptionTungsten nanoparticles (NP's) were impregnated in fractured samples of a Co-based alloy in order to evaluate their effect over the microstructure of the joint during a brazing process. The structure and morphology of the tungsten NP's were characterized by high resolution transmission electron microscopy (TEM). The brazing filler metal selected for this work was Nicrobraz 210 and it was characterized by scanning electron microscopy (SEM) and Spectrometry X-Ray Fluorescence. Cracks were generated in Co-based alloy rectangular samples of 10 mm x 10mm x 60 mm by bending them with a mechanical testing machine; these fractures were inspected by SEM. For the impregnation of the cracks with NP's, a mixture of 0.5 g of tungsten NP's in 100 ml of ethanol was sonicated for 15 min. This sonicating time promotes the diffusion of tungsten inside the microcracks. The 210-S filler metal was used in the cracked samples with and without tungsten NP's impregnation. The brazing process was conducted in a sealed tube furnace under an Ar gas flow at 1200 °C for 60 min.Brazed samples were analyzed by optical microscope and SEM. The interaction of tungsten nanoparticles with the metallic filler in the melting zone modified the size and the morphology of the formed phases into a finer and uniformly distributed microstructure.
dc.formatapplication/pdf
dc.relationcitation:M. N. Ibarra-Castro, H. M. Hdz-García, J. M. Almanza-Robles, R. Muñoz-Arroyo, J. L. Acevedo-Dávila, C. Guevara-Chávez, L. Santiago-Bautista. (2015). Co-based alloy brazing incorporating tungsten nanoparticles. International Journal of Engineering and Innovative Technology (IJEIT) Volume 4, Issue 9, March 2015 (87-92). ISSN: 2277-3754
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rightshttp://creativecommons.org/licenses/by-nc-nd/4.0
dc.subjectinfo:eu-repo/classification/autor/modificación de materiales por nanopartículas
dc.subjectinfo:eu-repo/classification/cti/7
dc.subjectinfo:eu-repo/classification/cti/33
dc.subjectinfo:eu-repo/classification/cti/3312
dc.subjectinfo:eu-repo/classification/cti/3312
dc.titleCo-based alloy brazing incorporating tungsten nanoparticles
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion


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