Determination of gallium, germanium, arsenic and selenium contents in heat-resistant nickel alloys microalloyed by REM using ICP-MS

Yakimovitch P.V., Alekseev A.V.
UDC
669.85:543.51
DOI
10.18577/2307-6046-2015-0-3-9-9
Article PDF (Russian) (590.47 KB)
How to cite
Yakimovitch P.V., Alekseev A.V. Determination of gallium, germanium, arsenic and selenium contents in heat-resistant nickel alloys microalloyed by REM using ICP-MS // Proceedings of VIAM. 2015. No. 3. DOI: 10.18577/2307-6046-2015-0-3-9-9. URL: https://test.viam.ru/en/journal/2015/3/9
Abstract

Heat-resistant nickel alloys are widely applied in the modern aviation industry and engine building. Some critical components subjected to huge thermal and power loadings are made of them. Thus, an important task is to control chemical composition of nickel-based alloys, in particular the content of trace constituents, which include gallium, germanium, arsenic and selenium. Gallium, germanium, arsenic and selenium content in certified reference samples of nickel alloys microalloyed by REM was determined using mass spectrometry with inductively coupled plasma (ICP-MS). The method of dissolution of a sample and its preparation for analysis was described. Spectral interferences were eliminated using the equations of mathematical correction. The detection limits (% mass.) were as follows: Ga – 0,000002, Ge – 0,000002, Se – 0,00003, As – 0,00004. The range of the defined concentrations was 0,000009–0,0023% mass., the relative standard deviation of not higher than 0,05.

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