Mechanical Characterization of SAC Solder Joints at High Temperature Using Nanoindentation

Ahmed, Sudan; Hasnine,; Suhling, Jeffrey C.; Lall, Pradeep

doi:10.1109/ectc.2017.336

Cited by 34 publications

(4 citation statements)

References 49 publications

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“…The creep of the reference Sn-Zn material and material doped with Ag nanoparticles was studied by nanoindentation. For the creep evaluation of Sn-based materials, a similar indentation load (10,000 µN) was applied in the earlier literature [25]. From the load versus penetration depth and creep displacement at maximum load, as presented in Figure 2c,d, the penetration depth of the reference material was higher than that of the Sn-Zn material doped with Ag nanoparticles.…”

Section: Temperature Dependence Of the Elastic Properties Of Sn-zn-bamentioning

confidence: 95%

Nanoindentation Creep, Elastic Properties, and Shear Strength Correlated with the Structure of Sn-9Zn-0.5nano-Ag Alloy for Advanced Green Electronics

Gain

Zhang

2020

Metals

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This work investigates the influence of an Ag nanoparticle addition on the microstructure, microhardness, creep, temperature-dependent elastic properties, damping capacity, and shear strength of an environmentally friendly eutectic Sn-9Zn (wt.%) material. A microstructure analysis confirmed that adding Ag nanoparticles significantly altered the morphologies of the Zn-rich phase, which includes the size and shape in the presence of fine spherical-shaped AgZn3 intermetallic compound (IMC) particles in the β-Sn matrix. These fine microstructures positively impact on microhardness, creep, damping capacity, and temperature-dependent elastic properties. Furthermore, in the electronic interconnection on an Au/Ni-plated-Cu pad ball grid array (BGA) substrate, adding Ag nanoparticles generates an additional AgZn3 IMC layer at the top surface of the AuZn3 IMC layer. It also significantly improves the oxidation resistance of Sn-Zn material due to the formation of fine AgZn3 IMC particles. Moreover, the interfacial shear strength value of the Sn-Zn material doped with Ag nanoparticles on the Au/Ni-Cu pad BGA substrate increased about 12% as compared to the reference material after five minutes of reaction in the presence of a fine Zn-rich phase and AgZn3 IMC particles, which acted as second phase dispersion strengthening mechanism. Adding Ag nanoparticles also altered the fracture mode to a typical ductile failure with rough dimpled surfaces of the Sn-Zn material.

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Section: Temperature Dependence Of the Elastic Properties Of Sn-zn-bamentioning

confidence: 95%

Nanoindentation Creep, Elastic Properties, and Shear Strength Correlated with the Structure of Sn-9Zn-0.5nano-Ag Alloy for Advanced Green Electronics

Gain

Zhang

2020

Metals

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“…Thermal drift is a well-known phenomenon also during quasistatic nanoindentation. [38,39] Therefore, many devices provide built-in options for drift correction. These are usually based on monitoring the displacement for a certain period of time before the actual test while maintaining a constant, very low load.…”

Section: Introductionmentioning

confidence: 99%

“…[39,41] A different approach is to use so-called reference segments at the beginning of the test during which initial values are determined, e.g., for the indent displacement in creep tests or for contact modulus in dynamic measurements. [32,38,42] Based on these values, which are presumably unaffected by significant thermal drift, the indent or contact area is continuously calculated throughout the measurement. [32,38] Thus, the influence of thermal drift on the results is reduced because they are independent of the actual measurement of the indentation depth during the experiment.…”

Section: Introductionmentioning

confidence: 99%

“…[32,38,42] Based on these values, which are presumably unaffected by significant thermal drift, the indent or contact area is continuously calculated throughout the measurement. [32,38] Thus, the influence of thermal drift on the results is reduced because they are independent of the actual measurement of the indentation depth during the experiment.…”

Section: Introductionmentioning

confidence: 99%

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Cyclic Nanoindentation for Local High Cycle Fatigue Investigations: A Methodological Approach Accounting for Thermal Drift

et al. 2023

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Cyclic nanoindentation allows characterizing the influence of single phases and their interactions on fatigue mechanisms. Herein, a method for high cycle fatigue testing by nanoindentation is presented. By combining high‐ and low‐frequency indentation modes, high cycle numbers are achieved while obtaining sufficient data points to reconstruct force–displacement hysteresis loops. A challenge is the stochastic course of thermal drift which is addressed by measuring drift rate in regular low‐force holding segments. Drift rates are used to correct the displacement values, yielding reproducible cyclic deformation data as it is shown for two very different materials, a ductile metal and a brittle ceramic.

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Temperature and humidity effects on microstructure and mechanical properties of an environmentally friendly Sn–Ag–Cu material

Gain

Zhang

2019

J Mater Sci

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Mechanical Characterization of SAC Solder Joints at High Temperature Using Nanoindentation

Cited by 34 publications

References 49 publications

Nanoindentation Creep, Elastic Properties, and Shear Strength Correlated with the Structure of Sn-9Zn-0.5nano-Ag Alloy for Advanced Green Electronics

Nanoindentation Creep, Elastic Properties, and Shear Strength Correlated with the Structure of Sn-9Zn-0.5nano-Ag Alloy for Advanced Green Electronics

Cyclic Nanoindentation for Local High Cycle Fatigue Investigations: A Methodological Approach Accounting for Thermal Drift

Temperature and humidity effects on microstructure and mechanical properties of an environmentally friendly Sn–Ag–Cu material

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