SILICON CARBIDE-BASED REFRACTORY MATERIAL Russian patent published in 2004 - IPC

FIELD: refractory materials.

SUBSTANCE: invention, which relates to refractory materials for manufacturing tools intended for use in pressure treatment, cutting, abrasive treatment and preserving their refractory capacity at 2300^оС, provides silicon carbide-based refractory material containing following components, vol.% (taking no account pore volume): W₅Si₃ and/or (Mo,W)₃Si₃, and/or (Mo,W)₅Si₃C, and/or Mo₅Si₃C 2-14.9; WSi2 and/or (Mo,W)Si₂, and/or (Mo,W)Si₂ and MoSi₂ 0-10; and silicon carbide 75.1-98, provided that, in the total weight of silicides-forming refractory metals, Mo/W weight ratio is (0-97):(3-100). Material may further contain rhenium, free carbon in the form of graphite and/or carbon fibers, and/or carbon cloth and at least one efficiently oxygen-binding element.

EFFECT: increased mechanical strength, heat and abrasive resistance.

9 cl, 10 ex