Determination of the mass fraction of tantalum in Fe–Ni–Co–Ta alloys

Goundobin N.V., Titov V.I., Pilipenko L.V.
UDC
54.063
DOI
10.18577/2307-6046-2015-0-6-7-7
Article PDF (Russian) (437.88 KB)
How to cite
Goundobin N.V., Titov V.I., Pilipenko L.V. Determination of the mass fraction of tantalum in Fe–Ni–Co–Ta alloys // Proceedings of VIAM. 2015. No. 6. DOI: 10.18577/2307-6046-2015-0-6-7-7. URL: https://test.viam.ru/en/journal/2015/6/7
Abstract

The aim of this study was to conduct research on the development of methods for determination of tantalum mass fraction (within the range of 2–15% mass.) in Fe–Ni–Co–Ta alloys. In addition to the main alloying elements, the alloy may contain the following impurities: 2–3% mass. of titanium and microimpurities of chromium, aluminum and silicon. Studies on the selection of the conditions for translation of analytical sample of Fe–Ni–Co–Ta alloy into solution. For the subsequent deposition and separation of tantalum from the other alloy components, reagent tannin was selected. An effect of acidity on the completeness of the deposition of tantalum with tannin was studied. It was determined that for elimination of errors in the determination of tantalum due to co-precipitation of titanium a double re-precipitation of tantalum is required. The studies allowed to develop a method of gravimetric determination of the mass fraction of tantalum (within the range of 2–15% mass.) in Fe–Ni–Co–Ta a

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