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Funct. Mater. 2019; 26 (3): 507-513.


Features of the contact interaction in the TiC-NiCrBSiC system


I.Frantsevich Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, 3 Krzhyzhanovsky Str., 03680 Kyiv, Ukraine


The wetting and interfacial interactions between the sintered TiC ceramic and Ni-based eutectic self-fluxing alloy of NiCrBSiC system were investigated by the sessile drop technique in a vacuum environment at 1100°C. The wetting kinetic was studied and the contact angles were determined. The NiCrBSiC alloy spreads on the TiC substrate forming the contact angle of 34°. It was established that chromium is a phase active element in this system. The main processes of interfacial interaction were the slight dissolution of the TiC ceramic over Ni-based alloy grain boundaries and formation of chromium carbides. Thus, TiC-NiCrBSiC system is proved to be a good candidate for the development of wear-resistant NiCrBSiC alloy-based composite materials reinforced with TiC particles due to the low contact angle values and negligible interaction between the refractory compound and alloy components.

self-fluxing alloy, wetting, contact angle, interfacial area, composite powder materials, thermal-sprayed coatings.

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