journal article·2019-01Open access

Wetting behavior of Sn–Ag–Cu and Sn–Bi–X alloys: insights into factors affecting cooling rate

Bismarck L. Silva, Amauri Garcia, José E. Spinelli

Abstract

Based on two experimental approaches: transient directional solidification and drop shape analyses, the measurements of cooling rates and contact angles (θ) of several solders of interest became practical. Three Sn–0.7Cu–(1; 2 and 3Ag) and four Sn–34Bi–(0Cu; 0.1Cu; 0.7Cu; 2Ag) alloys are investigated to determine their wetting behavior, compare to each other and bring to light their ability (or not) to control the initial cooling rate. In the case of SAC alloys, increase in Ag means decrease in both θ and cooling rate. An opposite correlation between cooling rate and θ is observed when Sn–34Bi and the Sn–34Bi–0.1Cu alloys are compared.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Electronic Packaging and Soldering Technologies · 3D IC and TSV technologies · Advanced Welding Techniques Analysis

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

References (14)

Show source-provided references
1. Magnetic nanoparticle-based solder composites for electronic packaging applications10.1016/j.pmatsci.2014.08.001 ↗
2. Mechanical properties of Pb-free SnAg solder joints10.1016/j.actamat.2011.01.012 ↗
3. The experimental study of the Bi–Sn, Bi–Zn and Bi–Sn–Zn systems10.1016/j.calphad.2007.04.004 ↗
4. Effect of silver and indium addition on mechanical properties and indentation creep behavior of rapidly solidified Bi–Sn based lead-free solder alloys10.1016/j.msea.2012.09.038 ↗
5. Interfacial heat transfer coefficients and solidification of an aluminum alloy in a rotary continuous caster10.1016/j.ijheatmasstransfer.2008.07.003 ↗
6. Lead-free solders in microelectronics10.1016/S0927-796X(00)00010-3 ↗
7. An alternative thermal approach to evaluate the wettability of solder alloys10.1016/j.applthermaleng.2016.06.177 ↗
8. Solder/substrate interfacial thermal conductance and wetting angles of Bi–Ag solder alloys10.1007/s10854-015-3983-2 ↗
9. Correlation between unsteady-state solidification conditions, dendrite spacings, and mechanical properties of Al–Cu alloys10.1007/s11661-000-0096-0 ↗
10. Effect of silver in common lead-free alloys
11. The effects of adding silver and indium to lead-free solders
12. Wettability of molten Sn–Bi–Cu solder on Cu substrate10.1016/j.matlet.2009.06.052 ↗
13. Tensile properties and related microstructural aspects of hypereutectic Al–Si alloys directionally solidified under different melt superheats and transient heat flow conditions10.1016/j.msea.2016.12.096 ↗
14. Assessment of tertiary dendritic growth and its effects on mechanical properties of directionally solidified Sn–0.7Cu–xAg solder alloys10.1007/s11664-014-3087-4 ↗