Interfacial reaction and shear strength of Sn–0.7Cu solder/electrolytic Ni joints with reflow time
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Jeong-Won Yoon
Abstract
The interfacial reaction, change of intermetallic compound (IMC) morphology and shear strength of Sn–0.7 wt.% Cu solder/Ni joints were investigated during reflow at 255 °C for times of up to 20 min. Up to the reaction time of 1 min, a needle-type (Cu,Ni)6Sn5 IMC with a hexagonal cross-section was formed. After reflow for 5 min, the (Ni,Cu)3Sn4IMC started to form under the (Cu,Ni)6Sn5 IMC. After prolonged reflow time, the upper (Cu,Ni)6Sn5 IMCs detached from the interface. Also, the morphology of the (Cu,Ni)6Sn5 IMC changed from needle type to dodecagonal type with increasing reflow time. In the ball shear test, the shear strength did not change significantly as a function of the reflow time. The result of the shear test indicated that the shear strength of the Sn– 0.7Cu/Ni ball-grid array solder joint was not significantly related to the thickness and spalling phenomenon of the IMCs formed at the interface.
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This work was supported by grant No. RTI04-03-04 from the Regional Technology Innovation Program of the Ministry of Commerce, Industry and Energy (MOCIE).
References
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© 2005 Carl Hanser Verlag, München
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- Notifications/Mitteilungen
- Personal/Personelles
- Conferences/Konferenzen
Articles in the same Issue
- Frontmatter
- Articles Basic
- Kinetics of crystallization of amorphous Mg80Cu10Y10
- Thermodynamic description of the Al–Fe–Mg–Mn–Si system and investigation of microstructure and microsegregation during directional solidification of an Al–Fe–Mg–Mn–Si alloy
- Effect of Ca addition on precipitation in the Pb-4 wt.% Sn alloy
- Binary phase diagrams of the rare earth metals with zinc: the Tb–Zn, Ho–Zn and Er–Zn systems
- SEM study on the M7C3 carbide nucleation during eutectic solidification of high-chromium white irons
- Manifestations of dynamic strain ageing in 2090 Al–Li alloy
- Articles Applied
- Study on susceptibility of Al–Si alloy castings to surface refinement with TIG arc
- Grain refinement of an AZ63B magnesium alloy by an Al–1C master alloy
- Retrogression, reaging, and mechanical behaviour of a 1441 Al–Li–Cu–Mg–Zr alloy
- The variation of microstructure by α–β forging and its effect on the strength and ductility in Ti–6Al–4V alloy
- Interfacial reaction and shear strength of Sn–0.7Cu solder/electrolytic Ni joints with reflow time
- Effect of niobium on the mechanical properties of powder-metallurgy processed high-speed steels
- High temperature behaviour of H13 steel
- Notifications/Mitteilungen
- Personal/Personelles
- Conferences/Konferenzen
