COMPOSITE MATERIAL Russian patent published in 2002 - IPC

FIELD: metallurgy; composite materials with metal matrix, reinforced mineral fibers to be used as structural material for manufacture of extra strength articles. SUBSTANCE: composite material consists of metal matrix made from metal selected from group containing aluminum, magnesium, zinc or tin and alloys on their base and reinforcing mineral fibrous material. Used as reinforcing mineral fibrous material is cloth with one-sided or two-sided puncture by chopped roving. Cloth and roving are made from mineral fiber of the following composition, mas.%: SiO₂47, 47-56; CaO, 5.5-12; Al₂O₃, 12-17; MgO, 4.4-9.0; Fe₂O₃+FeO, 10-14; TiO₂, 1-2; admixtures, the balance. Cloth with one-sided or two-sided puncture by roving may be located in volume of matrix or on its surface. Roving may have U-shaped or linear form. Strength of composite material; ranges from 52 to 80 kgf/sq.mm. EFFECT: enhanced mechanical tensile strength and relaxation ability of composite material. 3 cl, 3 ex