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Structure and properties of macro-heterogeneous composite layers produced using method of furnace surfacing were investigated. As the fillers the quasi-crystalline alloys Al—Cu—Fe, Al—Co—Cu and Al—Co—Ni were used. As the bonds the alloys based on aluminium and copper were used. It was shown that the method of furnace surfacing allows obtaining the content of quasi-crystalline icosahedral ψ-phase of not less than 30 vol.% in the structure of composite layers strengthened by Al—Cu—Fe alloy-filler, and the content of quasi-crystalline decagonal D-phase of up to 55 vol.% in the structure of composite layers with alloys-fillers Al—Co—Cu and Al—Co—Ni. The regularities of formation of interfaces between filler and bond during surfacing are explained by realization of solution-diffusive mechanism of processes of contact interaction. The primary dissolution of crystalline phases of alloys-fillers was established, which leads to penetration of molten bonds inside the filler along the boundaries of crystals of the quasi-crystalline phase. The increase in intensity of processes of dissolution of filler crystalline phases in use for surfacing of Cu-based bonds results in their complete recrystallization in the process of cooling at retaining not-dissolved inclusions of quasi-crystalline phase in the structure of composite layers. To produce the surfaced layers operating under the conditions of dry friction, the composite material based on tin bronze Br.Ots 10-2 armored by the Al—Co—Ni alloy-filler was recommended. The composite material with bond of brass L62 and alloy-filler Al—Co—Cu has the maximum resistance in oxide media. 11 Ref., 1 Table, 4 Figures.

Quasi-crystalline alloys-fillers for composite layers produced using method of furnace surfacing