Fabrication of Niobium Powder for Solid-electrolyte Capacitors

Yoon, Jaesik; Hwang, Sun-Ho; Kim, Byung-Il

doi:10.5695/jkise.2009.42.5.227

Cited by 1 publication

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“…of these particles, the size of the primary particle obtained when the mass of mg added was 7 mol, was approximately 1 µm, suggesting that small particles were sintered to secure high porosity, with the smallest possible size of the honeycomb network structure obtained. There are several reports that such structures with high specific surface area, which are advantageous for use as powder material in capacitors, enhance capacitance [17][18]. in Fig.…”

Section: Resultsmentioning

confidence: 99%

Archives of Metallurgy and Materials

Lee

Sim

Byeon

et al. 2021

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Production of HigH-Purity tantalum metal Powder for caPacitors using self-ProPagating HigH-temPerature syntHesis in this study, high-purity tantalum metal powder was manufactured via self-propagating high-temperature synthesis. During the process, Ta 2 o 5 and mg were used as the raw material powder and the reducing agent, respectively, and given that combustion rate and reaction temperature are important factors that influence the success of this process, these factors were controlled by adding an excessive mass of the reducing agent (mg) i.e., above the chemical equivalent, rather than by using a separate diluent. it was confirmed that Ta metal powder manufactured after the process was ultimately manufactured 99.98% high purity Ta metal powder with 0.5 µm particle size. Thus, it was observed that adding the reducing reagent in excess favored the manufacture of high-purity Ta powder that can be applied in capacitors.

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Section: Resultsmentioning

confidence: 99%