Method for the preparation of metal matrix composite materials

Details Method for the preparation of metal matrix composite materials Method for the preparation of metal matrix composite materials

C - Chemistry, Metallurgy

04

B

75/167, 117/46.4

C04B 35/80 (2006.01) B22F 1/02 (2006.01) C04B 35/76 (2006.01) C04B 41/45 (2006.01) C22C 47/04 (2006.01) C22C 47/20 (2006.01) C22C 49/00 (2006.01) C22C 49/06 (2006.01)

Patent

CA 2063552

2063552 9100932 PCTABS00003 A method for preparing deagglomerated fibres and/or particles and for providing the fibres and/or particles with a substantially uniform protective coating, the fibres and/or particles being of a material selected from the group consisting of carbides, oxides, nitrides, silicides, borides, metals and graphite, including SiC, TiC, ZrC, WC, NbC, AlN, TiN, BN, Si3N4, MgO, Al2O3, SiO2, ZrO2, Fe2O3, Y2O3, steel, tungsten, molybdenum and carbon, the method comprising (a) preparing an inorganic colloid sol, and (b) mixing the fibres and/or particles with the inorganic colloid sol to produce a dispersion in which the fibres and/or particles are deagglomerated and substantially homogeneously distributed. The fibres and/or particles, e.g. SiC whiskers provided with an aluminium oxide coating by treatment with an aluminium hydroxide-based sol, are used for the preparation of metal matrix composite materials, e.g. based on aluminium or an aluminium alloy.

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