Magnetic nanoparticle-based solder composites for electronic packaging applications

Xu, Siyang; Habib, Ashfaque H.; Pickel, Andrea D.; McHenry, Michael E.

doi:10.1016/j.pmatsci.2014.08.001

Cited by 63 publications

(29 citation statements)

References 136 publications

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“…Nanoindentation is increasingly becoming the technique of choice to assess the mechanical behavior of tiny materials, particularly to measure the strain rate sensitivity exponent [12,[15][16][17][18][19][20][21][22][23][24]. Different types of nanoindentation loading conditions are often used to determine the relationship between the indentation strain rate and hardness, including constant rate of loading (CRL), constant load and hold (CLH), constant strain rate (CSR), and strain rate jump (SRJ) nanoindentations [20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Strain-Rate Sensitivity of Selective Laser Melted H13 Tool Steel Using Nanoindentation Tests

Nguyen

Kim

Lee

et al. 2018

Metals

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This paper demonstrates the successful printing of H13 tool steel by a selective laser melting (SLM) method at a scan laser speed of 200 mm/s for the best microstructure and mechanical behavior. Specifically, the nanoindentation strain-rate sensitivity values were 0.022, 0.019, 0.027, 0.028, and 0.035 for SLM H13 at laser scan speeds of 100, 200, 400, 800, and 1600 mm/s, respectively. This showed that the hardness increases as the strain rate increases and, practically, the hardness values of the SLM H13 at the 200 mm/s laser scan speed are the highest and least sensitive to the strain rate as compared to H13 samples at other scan speeds. The SLM processing of this material at 200 mm/s laser scan speed therefore shows the highest potential for advanced tool design. Residual stress is expected to affect the hardness and shall be investigated in future research.

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Section: Introductionmentioning

confidence: 99%

Evaluation of Strain-Rate Sensitivity of Selective Laser Melted H13 Tool Steel Using Nanoindentation Tests

Nguyen

Kim

Lee

et al. 2018

Metals

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“…Owing to the unique physics and chemistry that occur at the nanoscale, nanocomposites are being developed for numerous technological applications, including construction and infrastructure development; 1-4 food 5,6 and electronic 7,8 packaging; biomedical devices and materials; 9-11 and automotive/aerospace materials. 12-14 …”

Section: Introductionmentioning

confidence: 99%

Environmental release of core–shell semiconductor nanocrystals from free-standing polymer nanocomposite films

Pillai

Gray

Tien

et al. 2016

Environ. Sci.: Nano

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Concomitant with the development of polymer nanocomposite (PNC) technologies across numerous industries is an expanding awareness of the uncertainty with which engineered nanoparticles embedded within these materials may be released into the external environment, particularly liquid media. Recently there has been an interest in evaluating potential exposure to nanoscale fillers from PNCs, but existing studies often rely upon uncharacterized, poor quality, or proprietary materials, creating a barrier to making general mechanistic conclusions about release phenomena. In this study we employed semiconductor nanoparticles (quantum dots, QDs) as model nanofillers to quantify potential release into liquid media under specific environmental conditions. QDs of two sizes were incorporated into low-density polyethylene by melt compounding and the mixtures were extruded as free-standing fluorescent films. These films were subjected to tests under conditions intended to accelerate potential release of embedded particles or dissolved residuals into liquid environments. Using inductively-coupled plasma mass spectrometry and laser scanning confocal microscopy, it was found that the acidity of the external medium, exposure time, and small differences in particle size (on the order of a few nm) all play pivotal roles in release kinetics. Particle dissolution was found to play a major if not dominant role in the release process. This paper also presents the first evidence that internally embedded nanoparticles contribute to the mass transfer, an observation made possible via the use of a model system that was deliberately designed to probe the complex relationships between nanoparticle-enabled plastics and the environment.

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“…Their use is also considered as advantageous in industrial magnetic heating applications, for example in the form of solder-nanoparticle composites that enable localized reflow soldering by the use of AC magnetic fields [15].…”

Section: Introductionmentioning

confidence: 99%

Structure and magnetism of Fe–Co alloy nanoparticles

Klencsár

Németh

Zoltán

et al. 2016

Journal of Alloys and Compounds

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We report the hydrothermal synthesis and structure of Fe x Co 1-x alloy nanoparticles with considerable stability against oxidation under ambient atmosphere. Powder X-ray diffractometry (XRD), transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDX), inductively coupled plasma mass spectrometry (ICP-MS), 57 FeMössbauer spectroscopy and magnetization measurements are applied to characterize the composition, morphology, crystal structure, atomic order and magnetic properties of the nanoparticles. As-prepared samples are composed mainly of the bcc Fe x Co 1-x alloy phase.TEM images of heat-treated samples confirm the nanoparticle nature of the original alloys. A consistent analysis of the experimental results leads to x  53% and x  62% Fe atomic ratio respectively in two analogous alloy samples, and suggests that the atomic level structure of the nanoparticles corresponds to that of a fully disordered (A2-type) alloy phase. Exploration of the effect of cobalt on the 57 Fe hyperfine parameters of iron microenvironments suggests that in these alloys the electronic state of Fe atoms is perturbed equally and in an additive manner by atoms in their first two coordination spheres.

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Magnetic nanoparticle-based solder composites for electronic packaging applications

Cited by 63 publications

References 136 publications

Evaluation of Strain-Rate Sensitivity of Selective Laser Melted H13 Tool Steel Using Nanoindentation Tests

Evaluation of Strain-Rate Sensitivity of Selective Laser Melted H13 Tool Steel Using Nanoindentation Tests

Environmental release of core–shell semiconductor nanocrystals from free-standing polymer nanocomposite films

Structure and magnetism of Fe–Co alloy nanoparticles

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