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

1992-01-21

1996-04-09

Walsh, Donald P.

Stock material or miscellaneous articles

All metal or with adjacent metals

Having metal particles

419 14, 419 19, 419 24, 419 35, 419 64, 419 66, 427214, 427215, 427216, 427220, 4285395, 428554, 428555, 428556, 428608, 264 58, 264 63, 264241, 264257, 264258, B22F 700, B05D 700, C04B 3564

Patent

active

055060617

ABSTRACT:
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, Si.sub.3 N.sub.4, MgO, Al.sub.2 O.sub.3, SiO.sub.2, ZrO.sub.2, Fe.sub.2 O.sub.3, Y.sub.2 O.sub.3, steel, tungsten, molybdenum and carbon, the method comprising (a) preparing an inorganic colloid sol, and (b) mixing the fibres and/or particles are deagglomerated and substantially homogeneously distributed. The fibres and/or particles, e.g. SiC whiskers provided with an aluminum oxide coating by treatment with an aluminum hydroxide-based sol, are used for the preparation of metal matrix composite materials, e.g. based on aluminum or an aluminum alloy.

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