Spektrofotometric definition niobium in the heat resisting nickel alloys containing tantalum

Goundobin N.V., Titov V.I., Pilipenko L.V., Dvoretskov R.M.
UDC
669.15:669.018:543.4
DOI
10.18577/2307-6046-2014-0-8-10-10
Article PDF (Russian) (496.48 KB)
How to cite
Goundobin N.V., Titov V.I., Pilipenko L.V., Dvoretskov R.M. Spektrofotometric definition niobium in the heat resisting nickel alloys containing tantalum // Proceedings of VIAM. 2014. No. 8. DOI: 10.18577/2307-6046-2014-0-8-10-10. URL: https://test.viam.ru/en/journal/2014/8/10
Abstract

The technique definitions of mass fraction Nb in heat resisting nickel alloys in a range of concentration of 0,5–3,5% of weights by absorption spectrofotometrical method is developed at the simultaneous maintenance in alloys Ta (0,5–6,0% of weights). For increase of accuracy and cleanliness of carrying out of analysis Nb and Ta preliminary separates from disturbe components and from basis of alloy by phenilarsenium acid. The disturbe cous of Zr and Hf, what separates together with Nb and Ta, separetes with binding it’s a stable complex with a reagent complexon III. The analysis is conducted with a reagent sulphonitrazo E by spectrofotomttrical measurement of optical density of a solution on length of a wave λ=560 nanometers. Calculation of maintenance Nb is made on the standard sample of a nickel alloy with the certified maintenance Nb spent through all stadies of the analysis with addition in its a standart solution Ta in quantity equal its maintenance in the analyzed alloy.

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