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Effects of Si and Ni nanoparticles in Brazing process on fracture surfaces of 304 stainless steels

Published online by Cambridge University Press:  28 February 2012

H. M. Hdz-García ,
J. L. Acevedo-Dávila ,
L. A. García-Cerda ,
M. I. Pech-Canul ,
R. Muñoz-Arroyo ,
F. A. Reyes-Valdes ,
F. A. Hernández-García  and
J. A. Aguilar-Martínez
H. M. Hdz-García
Affiliation:
Corporación Mexicana de Investigación en Materiales, Calle Ciencia y Tecnología No. 790 Fracc. Saltillo 400; Saltillo, Coah. CP. 25290. e-mail: hmanuelhdz@comimsa.com.
J. L. Acevedo-Dávila
Affiliation:
Corporación Mexicana de Investigación en Materiales, Calle Ciencia y Tecnología No. 790 Fracc. Saltillo 400; Saltillo, Coah. CP. 25290. e-mail: hmanuelhdz@comimsa.com.
L. A. García-Cerda
Affiliation:
Centro de Investigación de Química Aplicada, Blvd. Enrique Reyna Hermosillo, Saltillo, Coah.
M. I. Pech-Canul
Affiliation:
Centro de Investigación y Estudios Avanzados del IPN, Carr. Monty-Saltillo km. 13; Ramos Arizpe, Coah. CP. 25900.
R. Muñoz-Arroyo
Affiliation:
Centro de Investigación y Estudios Avanzados del IPN, Carr. Monty-Saltillo km. 13; Ramos Arizpe, Coah. CP. 25900.
F. A. Reyes-Valdes
Affiliation:
Corporación Mexicana de Investigación en Materiales, Calle Ciencia y Tecnología No. 790 Fracc. Saltillo 400; Saltillo, Coah. CP. 25290. e-mail: hmanuelhdz@comimsa.com.
F. A. Hernández-García
Affiliation:
Universidad Politécnica de Querétaro carr. Est. 420 s/n; El Marques, Qro. C.P. 76240.
J. A. Aguilar-Martínez
Affiliation:
Centro de Investigación en Materiales Avanzados, Alianza Norte 202, Autopista Mty-Aeropuerto Km. 10, Parque de Investigación e Innovación Tecnológica (PIIT), Apodaca, NL, C.P. 66600
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Abstract

In order to increase the wettability and capillary forces of the filler metal between micro-cracking and micro-porous on the fracture surfaces of 304 stainless steels, methods of impregnation of Si and growth of Ni nanoparticles were used. These nanoparticles have a role inside the Transient Liquid Phase (TLP) and the substrate when using Brazing process. TLP can react with the nanoparticles previously deposited between micro-cracking and micro-porous and therefore promotes the nucleation and growth sites of phases and decreases the formation of eutectic structures. This method increases the effectiveness of metallic components reparation using Brazing process. Such effectiveness is indicated by an inspection of microstructural failure analysis, as a first stage, in the covered zone by the filler metal.

Keywords

BrazingTransient Liquid PhaseStainless steel
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1381: Symposium S22 – Materials Welding and Joining Technologies , 2012 , imrc11-1381-S22-012
Copyright
Copyright © Materials Research Society 2012

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