Determination sulfur, carbon, nitrogen and oxygen in alloys of system Pr–Dy–Fe–Co–B and Nd–Dy–Fe–Co–B

Alekseev A.V., Rastegayeva G.Yu., Pahomkina T.N.
UDC
669.017.165
DOI
10.18577/2307-6046-2019-0-10-95-102
Article PDF (Russian) (653.17 KB)
How to cite
Alekseev A.V., Rastegayeva G.Yu., Pahomkina T.N. Determination sulfur, carbon, nitrogen and oxygen in alloys of system Pr–Dy–Fe–Co–B and Nd–Dy–Fe–Co–B // Proceedings of VIAM. 2019. No. 10. DOI: 10.18577/2307-6046-2019-0-10-95-102. URL: https://test.viam.ru/en/journal/2019/10/9
Keywords
magnetic material, sulfur determination, carbon determination, nitrogen determination, oxygen determination, infrared absorption spectroscopy method.
Abstract

In this paper, the alloys of Pr–Dy–Fe–Co–B and Nd–Dy–Fe–Co–B systems were analyzed for the content of gas-forming impurities. The sulfur and carbon content was determined by combustion in the induction furnace of the Leco CS-444 gas analyzer with subsequent detection in the infrared cell of the spectrometer, and for the determination of oxygen and nitrogen, the method of reducing melting in the inert carrier gas current was used, followed by detection of oxygen in the infrared cell and nitrogen in the conductometric cell of the Leco TC-600 gas analyzer. For the complete extraction of the elements to be determined, various catalysts were used – tungsten with tin, vanadium oxide, copper chips and the most suitable one was chosen.

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