DEVELOPED SIC-SIC COMPOSITE AND MONOLITHIC LAYERED SIC STRUCTURES Russian patent published in 2020 - IPC G21C3/62 B32B17/12 C04B35/00 

FIELD: manufacturing technology.

SUBSTANCE: invention relates to systems, structures, devices and manufacturing processes in connection with casings, casings or shell structures for arrangement of nuclear fuel materials for use in nuclear reactors, or in connection with heat exchangers, nose fairings, nozzles or inserts of flow channel. Ceramic composite structure contains a chamber containing an outer shell and a hollow space inside the outer shell. Outer shell comprises inner composite layer comprising first composite structure, middle composite layer arranged outside of inner composite layer, a middle composite layer containing a second composite structure which differs from the first composite structure and an outer monolithic layer which has the property of a spatially homogeneous material and is located outside the middle composite layer.

EFFECT: invention provides improved performance characteristics, which enable to increase density of energy release, increase fuel burnup depth and extend service life.

25 cl, 5 tbl, 54 dwg