Influence of Doping on Physicochemical Properties of Eutectic Alloy of Cobalt with Niobium Carbide

G. P. Dmitrieva, T. S. Cherepova, T. V. Pryadko, I. I. Melnik

G. V. Kurdyumov Institute for Metal Physics, NAS of Ukraine, 36 Academician Vernadsky Blvd., UA-03142 Kyiv, Ukraine

Received: 07.07.2020. Download: PDF

The influence of doping on the physicochemical properties of cobalt alloy with niobium carbide NbC is determined on the basis of experimental studies. As established, a doping with a complex of elements including chromium, aluminium, tungsten and iron, reduces the melting point from (1410 $\pm$ 10)°C to (1320 $\pm$ 10)°C, does not affect the phase composition and structural state, but significantly increases the oxidation resistance at a temperature of 1100°C. The optimum content of alloying elements is established to impart increased heat resistance to a natural composite based on cobalt with niobium carbide.

Key words: eutectic, cobalt, niobium carbide, alloying, heat resistance, oxidation resistance.



PACS: 61.66.Dk, 61.72.-y, 62.20.Qp, 68.60.Dv, 81.05.Ni, 81.40.Gh, 81.30.Bx, 81.65.Mq

Citation: G. P. Dmitrieva, T. S. Cherepova, T. V. Pryadko, and I. I. Melnik, Influence of Doping on Physicochemical Properties of Eutectic Alloy of Cobalt with Niobium Carbide, Metallofiz. Noveishie Tekhnol., 42, No. 11: 1547—1558 (2020)

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