Please use this identifier to cite or link to this item:
Title: Effect of microstructure features on the corrosion behavior of the Sn‐2.1 wt%Mg solder alloy.
Authors: Cruz, Clarissa Barros da
Lima, Thiago Soares
Soares, Marco César Prado
Feitosa, Emmanuelle Sá Freitas
Fujiwara, Eric
Garcia, Amauri
Cheung, Noé
Keywords: Sn–Mg eutectic alloy
Corrosion resistance
Issue Date: 2020
Citation: CRUZ, C. B da et al. Effect of microstructure features on the corrosion behavior of the Sn‐2.1 wt%Mg solder alloy. Electronic Materials Letters, v. 16, p. 276-292, 2020. Disponível em: <>. Acesso em: 29 abr. 2022.
Abstract: The Sn–Mg eutectic alloy is a potential replacement for the traditional Sn-38.1 wt%Pb solder alloy, since lead has been banned because of its risk to human health and the environment. However, studies in the literature related to the Sn-2.1 wt%Mg alloy are restricted to mechanical, electrical and thermal properties. Therefore, this study aims to evaluate the corrosion behavior of this alloy, as a function of the microstructural arrangement obtained from directional solidifcation performed in a transient heat extraction regime. The thermal solidifcation parameters (solidifcation growth rate and cooling rate) were determined along the length of the casting for correlations with microstructural features. The resulting microstructure was characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy and X-ray difraction. Subsequently, the electrochemical impedance spectroscopy, linear polarization, equivalent circuit and evolution of hydrogen release analyzes were performed to evaluate the corrosion behavior of the samples in a 0.5 M NaCl solution at 25 °C. Interphase spacing and Mg2Sn fraction were found to infuence the corrosion behavior, showing higher corrosion resistance for a more refned microstructure.
ISSN: 2093-6788
Appears in Collections:DEENP - Artigos publicados em periódicos

Files in This Item:
File Description SizeFormat 
  Restricted Access
8,91 MBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.