Mechanical Characterization of Lead-Free Sn-Ag-Cu Solder Joints by High-Temperature Nanoindentation

Lotfian, S. and Molina Aldareguía, Jon M. and Yazzie, K.E. and Llorca Martinez, Francisco Javier and Chawla, N. (2013). Mechanical Characterization of Lead-Free Sn-Ag-Cu Solder Joints by High-Temperature Nanoindentation. "Journal of electronic materials", v. 42 (n. 6); pp. 1085-1091. ISSN 0361-5235. https://doi.org/10.1007/s11664-013-2517-z.

Description

Title: Mechanical Characterization of Lead-Free Sn-Ag-Cu Solder Joints by High-Temperature Nanoindentation
Author/s:
  • Lotfian, S.
  • Molina Aldareguía, Jon M.
  • Yazzie, K.E.
  • Llorca Martinez, Francisco Javier
  • Chawla, N.
Item Type: Article
Título de Revista/Publicación: Journal of electronic materials
Date: June 2013
Volume: 42
Subjects:
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ciencia de los Materiales
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The reliability of Pb-free solder joints is controlled by their microstructural constituents. Therefore, knowledge of the solder microconstituents’ mechanical properties as a function of temperature is required. Sn-Ag-Cu lead-free solder alloy contains three phases: a Sn-rich phase, and the intermetallic compounds (IMCs) Cu6Sn5 and Ag3Sn. Typically, the Sn-rich phase is surrounded by a eutectic mixture of β-Sn, Cu6Sn5, and Ag3Sn. In this paper, we report on the Young’s modulus and hardness of the Cu6Sn5 and Cu3Sn IMCs, the β-Sn phase, and the eutectic compound, as measured by nanoindentation at elevated temperatures. For both the β-Sn phase and the eutectic compound, the hardness and Young’s modulus exhibited strong temperature dependence. In the case of the intermetallics, this temperature dependence is observed for Cu6Sn5, but the mechanical properties of Cu3Sn are more stable up to 200°C.

More information

Item ID: 29016
DC Identifier: http://oa.upm.es/29016/
OAI Identifier: oai:oa.upm.es:29016
DOI: 10.1007/s11664-013-2517-z
Official URL: http://link.springer.com/article/10.1007%2Fs11664-013-2517-z
Deposited by: Memoria Investigacion
Deposited on: 09 Jun 2014 08:57
Last Modified: 22 Sep 2014 11:43
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