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Electric pulse consolidation of tantalum anodes for electrolytic capacitors

  • New Methods of Treatment and Fabrication of Materials with Desired Properties
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Inorganic Materials: Applied Research Aims and scope

Abstract

The structure of tantalum powders is investigated and the possibility for their application as anodes of electrolytic capacitors is studied. Critical parameters of the electric pulse consolidation (EPC) of powders making it possible to get a homogeneous volume distribution of pores are determined. The effect of the compacting pressure and the density of current through the powder on the porous structure and the specific surface of anodes of capacitor tantalum powders of classes I–IV is ascertained. The specific surface of anodes compacted by EPC is found to be higher by 18–230% than for anodes made by the conventional technology.

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References

  1. Frolova, L.M., Obgolts, O.Ya., and Golubev, A.V., Tantalum capacitors-yesterday and today, Proc. 4th Int. Conf. “Fundamental Problems of Radio-Electronic Instrument Engineering,” Moscow, 2007, Moscow State Techn. Univ. Radio Eng., Electron., Automat., 2007.

    Google Scholar 

  2. Balaji, T., Govindaiah, R., Sharma, M.K., Purushotham, Y., Arbind Kumar, and Prakashet, T.L., Sintering and electrical properties of tantalum anodes for capacitor applications, Mater. Lett., 2002, vol. 56, pp. 560–563.

    Article  CAS  Google Scholar 

  3. Bakanov, G.F., Sokolov, S.S., and Sukhodolsky, V.Yu., Osnovy konstruirovaniya i tehnologii radioelectronnykh sredstv (Fundamentals of Design and Technology of Radioelectronic Devices), Moscow: Akademia, 2007.

    Google Scholar 

  4. Belenky, B. and Gorbunov, N., Technological and materials science problems of nonlinear semiconductor capacitors and resistors, Sovrem. Electron., 2008, no. 1, pp. 10–13.

    Google Scholar 

  5. Prymak, J.D., Tantalum capacitors in power supply applications, Proc. Power Conver. Intell. Motion Conf. (PCIM Japan-98), Tokyo, 1998.

    Google Scholar 

  6. Zelikman, A.N., Korshunov, B.G., Elyutin, A.V., and Zakharov, A.M., Niobiy i tantal (Niobium and Tantalum), Moscow: Metallurgiya, 1990.

    Google Scholar 

  7. Belenky, B. and Gorbunov, N., Tantalum capacitorsproblems and prospects, Sovrem. Electron., 2008, no. 7, pp. 54–57.

    Google Scholar 

  8. Haas, H. and Bartmann, W., RF Patent 2414990, 2011.

  9. Kunieda, Y., Kuroyanagi, A., and Inoue, T., Characteristics of pore and capacitance of porous tantalum compact sintered in capsule-free hot isostatic pressing or vacuum, J. Jap. Inst. Metals, 1995, vol. 59, pp. 1286–1291.

    CAS  Google Scholar 

  10. Shakery, M., Al-Hassani, C.T.C. and Davies, T.J., Electrical discharge powder compaction, Powder Metallurgy Int., 1979, vol. 11, pp. 120–124.

    CAS  Google Scholar 

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Authors and Affiliations

  1. National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Kashirskoe sh. 31, Moscow, 115409, Russia

    M. S. Yurlova, E. G. Grigoryev, E. A. Olevsky & V. D. Demenyuk

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  1. M. S. Yurlova
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  2. E. G. Grigoryev
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  3. E. A. Olevsky
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  4. V. D. Demenyuk
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Correspondence to M. S. Yurlova.

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Original Russian Text © M.S. Yurlova, E.G. Grigoryev, E.A. Olevsky, V.D. Demenyuk, 2014, published in Fizika i Khimiya Obrabotki Materialov, 2014, No. 5, pp. 82–90.

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Yurlova, M.S., Grigoryev, E.G., Olevsky, E.A. et al. Electric pulse consolidation of tantalum anodes for electrolytic capacitors. Inorg. Mater. Appl. Res. 6, 267–274 (2015). https://doi.org/10.1134/S2075113315030156

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  • DOI: https://doi.org/10.1134/S2075113315030156

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