Funct. Mater. 2020; 27 (2): 363-367.


Subsolidus structure of the Ni-Cr-O-Al2O3 system and justification of advanced composites

S.M.Logvinkov1, G.N.Shabanova2, A.N.Korohodska2, A.A.Ivashura1, M.N.Ivashura3

1S.Kuznets Kharkiv National University of Economics, 9a Nauky Ave., 61000 Kharkiv, Ukraine
2National Technical University "Kharkiv Polytechnic Institute", 2 Kyrpychova Str., 61002 Kharkiv, Ukraine
3National University of Pharmacy, 53 Pushkinska Str., 61002 Kharkiv, Ukraine


The thermodynamic basing of the use of heat-resistant nickel alloys in composite materials with a metal matrix requires a detailed consideration of the subsolidus structure of a multicomponent metal-oxide system containing nickel and chromium as the base metal components, and corundum fiber Ni-Cr-O-Al2O3 are presented. The introduction of corundum fiber into the metal chromium-nickel matrix as a complex modifier - a reinforcing component that also functions as an antioxidant significantly increases both the operating temperature and the corrosion resistance of the composite material.

metal matrix, corundum fiber, heat-resistant alloys, metal-oxide system, subsolidus structure, spinel.

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