Production of solder powders by centrifugal atomization.

Kusaka, Katsushi; Shimizu, Takayoshi; Horata, Akira; Nakamura, Kiyoshi; Ohkouchi, Norio

doi:10.4262/denkiseiko.62.89

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2017

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“…[3][4][5] Moreover, experiments have been conducted using disc rotation speeds of R = 15,000-40,000 rpm, with the aim of efciently manufacturing particle sizes of approximately 50 μm. 6) Further, ne Sn-3Ag-0.5Cu powder particles of 45 μm or smaller containing oxygen at less than 100 ppm have been synthesized and could be applied to lead-free solder. 7) Furthermore, a hybrid method using gas atomization has been studied in order to manufacture particles with diameters no greater than 10 μm.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Lead-Free Solder Particles Using High-Speed Centrifugal Atomization

et al. 2017

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We investigated the relationships between the centrifugal force and the disc size and rotation speed during the production of ne particles. In this study, an empirical formula was developed with the goal of obtaining an average particle size of D50. Moreover, particle production was performed at a disc rotation speed of at least 100,000 rpm, which was greater than that reported in previous studies. Our results showed that with Sn-13 mass%Sb (called Sn-13Sb), the average particle size produced at a disc rotation speed of 115,000 rpm was 12.8 μm, with 96.5% of the particles smaller than 25 μm.

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