METHOD OF PRODUCING CERAMIC-METAL COMPOSITE MATERIALS Russian patent published in 2020 - IPC C22C1/10 B22F3/26 

FIELD: metallurgy.

SUBSTANCE: invention relates to powder metallurgy, particularly, to production of blanks from composite ceramic-metal materials or articles made therefrom. It can be used for creation of composite material with metal matrix containing 40–80 % of refractory ceramic phase, with improved mechanical properties. To form a refractory ceramic frame, the initial powders of titanium, soot, graphite, aluminium and silicon are mixed in a ball mill with accuracy of 0.1 g for 1 hour at a ratio of balls and initial powders of 3:1. Obtained mixture is pressed into a cylindrical or prismatic briquette with relative porosity of 0.4–0.6, combustion is initiated, which ensures self-propagating high-temperature synthesis flow to produce a refractory ceramic frame which is heated to 1200–3000 °C. Obtained frame is brought into contact with the liquid metal to ensure its spontaneous impregnation.

EFFECT: higher hardness, wear resistance, impact strength and electrical conductivity, simplified production technology, shorter duration of production cycle, as well as wider industrial range of products.

6 cl