engleski

Specific features of the physico-chemical processes during the hardening of the nanodispersed surface layer of the casting in the form

The mechanism of interaction of the cast iron melt with the layer of nanodispersed compound includes the following processes: heating of the layer of powder (possibly paste) due to the physical heat of the melt ; fi ltration of the melt into the pores of the powder and its further heating ; distribution of nanopowder particles in the liquid phase at the time of melt fi ltration ; further distribution of nanopowder particles in the liquid phase after fi lling the intergranular space ; diffusion processes during cooling of the impregnated metal in the solid state. The technology of using nanopowders as hardening agents to obtain a wear-resistant cast composite layer is a promising direction in the foundry industry .

physico-chemical processes ; hardening ; nanodispersed surface layer

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