Features of Segregation of the Oxide Phase during Sintering of Tantalum Powders with a Large Specific Surface

V. M. Orlov; Орлов В. М.; T. Yu. Prokhorova; Прохорова Т. Ю.; V. V. Semushin; Семушин В. В.

doi:10.31857/S0044185623700353

Features of Segregation of the Oxide Phase during Sintering of Tantalum Powders with a Large Specific Surface

Autores: Orlov V.M.¹, Prokhorova T.Y.¹, Semushin V.V.¹
Afiliações:
1. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Science Center, Russian Academy of Sciences, 184209, Apatity, Russia
Edição: Volume 59, Nº 3 (2023)
Páginas: 318-323
Seção: НОВЫЕ ВЕЩЕСТВА, МАТЕРИАЛЫ И ПОКРЫТИЯ
URL: https://vestnik.nvsu.ru/0044-1856/article/view/663884
DOI: https://doi.org/10.31857/S0044185623700353
EDN: https://elibrary.ru/SFHOSW
ID: 663884

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Resumo

The effect of the oxygen content in tantalum powders of different natures on the leakage currents of capacitor anodes has been examined. It has been established that the leakage current in the anodes from magnesium thermal powders with a highly developed surface depends on the oxygen content in them more weakly than in anodes from powders consisting of fragmented particles, which have a smaller surface area. This is explained by the fact that, during sintering of the anodes from powders with a large specific surface, the majority of the oxygen of the natural oxide interacts with the metal with the formation of Ta2O5 particles outside the tantalum particle volume.

Palavras-chave

tantalum powder, specific surface area, capacitor anode, sintering, tantalum pentoxide, leakage current

Bibliografia

Stratton P., Anderson J., Baylis R. // T.I.C. bulletin. 2018. 172. P. 16–21.
Knudson D. // T.I.C. bulletin. 2020. № 180. P. 10–15.
Zednicek T. // T.I.C. bulletin. 2019. № 176. P. 15–21.
Zednicek T. // T.I.C. bulletin. 2021. № 184. P. 13–15.
Одынец Л.Л., Орлов В.М. Анодные оксидные пленки. Л.: Наука, 1990. 200 с.
Balaji T., Purushotham Y., Kumar A. et al. // Metals, Materials and Processes. 2002. № 14. P. 155–162.
Калинников В.Т., Касиков А.Г., Орлов В.М. и др. // Химическая технология. 2009. Т. 10. № 3. С. 177–182.
Purushotham Y., Ravindranath K., Kumar A. et al. // International J. Refractory Metals and Hard Materials. 2009. V. 27. № 3. P. 571–576. https://doi.org/10.1016/j.ijrmhm.2008.08.001
Колосов В.Н., Орлов В.М., Мирошниченко М.Н., Прохорова Т.Ю. // Неорганические материалы. 2015. Т. 51. № 2. С. 157–162. https://doi.org/10.7868/S0002337X15010078
Sim J.-J., Choi S.-H., Lee Y.-K. et al. // Metals and Materials International. 2021. № 27. P. 1980-1987. https://doi.org/10.1007/s12540-020-00948-7
Hwang S.-M., Park S.-J., Wang J.-P. et al. // International J. Refractory Metals and Hard Materials. 2021. № 100. P. 105620. https://doi.org/10.1016/j.ijrmhm.2021.105620
Nersisyan H., Ryu H.S., Lee J.H. et al. // Combustion and Flame. 2020. 219. P. 133–146. https://doi.org/10.1016/j.combustflame.2020.05.019
Haas H., Schnitter Ch., Sato N. et al. // CARTS Europe 2008 Proceedings, Helsinki, Finland 20–23 October 2008. 2008. P. 157–167.
Розенберг Л.А., Штельман С.В. // Известия АН СССР. Металлы. 1985. № 4. С. 163–164.
Freeman Y., Lessner P., Kramer A.J. et al. // J. Electrochemical Society. 2010. V.157. Iss. 7. P. G161–G165. https://doi.org/10.1149/1.3391671
Орлов В.М., Федорова Л.А. // Известия АН СССР. Металлы. 1978. № 4. С. 67–70.
Pozdeev-Freeman Y., Rozenberg Y., Gladkikh A. et al. // J. Mater. Sci.: Mater. Electronics. 1998. V. 9. Iss. 4. P. 309–311. https://doi.org/10.1023/A:1008884924762
Pozdeev-Freeman Y., Gladkikh A. // JEM. 2001. V. 30. Iss. 8. P. 931–936. https://doi.org/10.1007/BF02657713
Freeman Y. Tantalum and Niobium-Based Capacitors Science, Technology, and Applications. Springer, 2018. 120 p. https://doi.org/10.1007/978-3-319-67870-2.
Haas H. Magnesium Vapour Reduced Tantalum Powders with Very High Capacitances // CARTS Europe 2004: 18 Annual Passive Components Conference, Nice, France, October 18–21, 2004. P. 5–8.
Орлов В.М., Крыжанов М.В. Получение нанопорошков тантала магниетермическим восстановлением танталатов // Металлы. 2015. № 4. С. 93–97.
Орлов В.М., Колосов В.Н., Прохорова Т.Ю., Мирошниченко М.Н. // Цветные металлы. 2011. № 11. С. 30–35.
Орлов В.М., Осауленко Р.Н., Крыжанов М.В., Лобов Д.В. // Неорганические материалы. 2017. Т. 53. № 4. С. 386–391. https://doi.org/10.7868/S0002337X17040133