Spark plasma sintering of silver nanopowder

Ng, Hendra; Shearwood, C.; White, Timothy John; Yu, Ligen; Khor, K.A.

doi:10.1117/12.759383

Cited by 3 publications

(3 citation statements)

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“…Santanach et al [ 136 ] considered that the density of the sintered samples could be increased through prolonging the sintering time. Ng et al [ 137 ] believed that sintering temperature could also affect density of the joints. Relative density of the samples almost reached 100% when the sintering temperature was increased to 300 °C, as shown in Figure 5 .…”

Section: Rapid Sintering Processes Of Nanoparticlesmentioning

confidence: 99%

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Recent Progress in Rapid Sintering of Nanosilver for Electronics Applications

Liu

Wang

et al. 2018

Micromachines

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Recently, nanosilver pastes have emerged as one of the most promising high temperature bonding materials for high frequency and high power applications, which provide an effective lead-free electronic packaging solution instead of high-lead and gold-based solders. Although nanosilver pastes can be sintered at lower temperature compared to bulk silver, applications of nanosilver pastes are limited by long-term sintering time (20–30 min), relative high sintering temperature (>250 °C), and applied external pressure, which may damage chips and electronic components. Therefore, low temperature rapid sintering processes that can obtain excellent nanosilver joints are anticipated. In this regard, we present a review of recent progress in the rapid sintering of nanosilver pastes. Preparation of nanosilver particles and pastes, mechanisms of nanopastes sintering, and different rapid sintering processes are discussed. Emphasis is placed on the properties of sintered joints obtained by different sintering processes such as electric current assisted sintering, spark plasma sintering, and laser sintering, etc. Although the research on rapid sintering processes for nanosilver pastes has made a great breakthrough over the past few decades, investigations on mechanisms of rapid sintering, and the performance of joints fabricated by pastes with different compositions and morphologies are still far from enough.

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Section: Rapid Sintering Processes Of Nanoparticlesmentioning

confidence: 99%

“… Relative density as a function of variable: ( a ) SPS temperature; ( b ) hold time. Reproduced with permission from [ 137 ]. …”

Section: Figurementioning

confidence: 99%

Recent Progress in Rapid Sintering of Nanosilver for Electronics Applications

Liu

Wang

et al. 2018

Micromachines

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“…Nanosilver, gold, and platinum powders receive attention recently due to their good conductivity and catalyst properties [8][9][10]. In addition, silver is well known to be antimicrobial and resistant to both oxidation and high temperature corrosion, thus it is promising to use Ag nanopowder to study the sintering behaviour of nanometallic powders without significant influence of the surface oxide layer [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Characterization of spark plasma sintered Ag nanopowders

Shearwood

et al. 2010

Nanotechnology

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The low temperature sintering behaviour of nanocrystalline Ag powder (with an average size of 70 nm) was characterized. Using spark plasma sintering (SPS), the Ag nanopowders can be successfully sintered at low pressure for only 5 min without external heating, and the sintering density increases and porosity decreases significantly with increase in the sintering temperature. Nanoindentation has been used to characterize the SPS sintered Ag samples. The mechanisms of the low sintering temperature behaviour of the nano-Ag powder and the nanoscale mechanical performance have been discussed. Compression tests were also used to characterize the mechanical properties of the sintered Ag sample with a maximum strain up to 15%.

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