Shaped bodies containing short inorganic fibers or whiskers with

Details Shaped bodies containing short inorganic fibers or whiskers with Shaped bodies containing short inorganic fibers or whiskers with

1991-04-24

1992-10-06

Lesmes, George F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

264 59, 264 63, 264109, 264125, 428288, 428289, 428297, 428302, 428364, 428367, 428408, 428457, 4285395, 428902, 428903, 428939, 501 32, 501 89, 501 95, C04B 3552, B32B 900, B32B 516

Patent

active

051530570

ABSTRACT:
A fiber-organic composition includes from about 5% to 50% by volume of uniformly dispersed, non-planar or three dimensionally random oriented inorganic fibers or whiskers, and a thermoplastic material such as paraffin wax. The composition also includes surfactants to promote wetting and dispersion of the inorganic fibers or whiskers. These materials are subjected to high shear mixing to form a uniform randomly oriented three-dimensional dispersion of the inorganic fibers or whiskers. After molding the mixture in such a manner so as not to disrupt the uniform, three-dimensional orientation of the fibers or whiskers, a majority of the thermoplastic material is removed leaving a shaped body or preform having sufficient strength for handling. The shaped body or preform can then be infiltrated with molten metal or the like to form a metal matrix composite.

REFERENCES:
patent: 4388255 (1983-06-01), Simpson
patent: 4720434 (1988-01-01), Kubo et al.
patent: 4801510 (1989-01-01), Mehrotra et al.
patent: 4820663 (1989-04-01), Mehrotra et al.
patent: 4919991 (1990-04-01), Gadkaree
patent: 4944904 (1990-07-01), Singh et al.
patent: 4985382 (1991-01-01), Nadkarni et al.

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