Composite material reinforced with alumina-silica fibers includi

Details Composite material reinforced with alumina-silica fibers includi Composite material reinforced with alumina-silica fibers includi

1985-04-23

1986-05-20

O'Keefe, Veronica

Stock material or miscellaneous articles

All metal or with adjacent metals

Laterally noncoextensive components

428610, 428608, B32B 502, B32B 900

Patent

active

045901325

ABSTRACT:
This composite material includes reinforcing alumina-silica fiber material in a metal matrix. The alumina-silica reinforcing fibers have principal components about 35% to about 65% by weight of SiO.sub.2, about 35% to about 65% by weight of Al.sub.2 O.sub.3, and a content of other substances of less than or equal to about 10% by weight, with the weight percentage of the mullite crystalline form therein being at least about 15%, and with the weight percentage of included non fibrous particles with diameter greater than or equal to 150 microns being not more than about 5%. And the matrix metal is selected from the group consisting of aluminum, magnesium, copper, zinc, lead, tin, and alloys having these as principal components. The volume proportion of the alumina-silica fibers should be at least 0.5%. Within these constraints, the qualities of the composite material with regard to wear, and wear on a mating member, and hardness, bending strength, and tensile strength, are good.

REFERENCES:
patent: 4457979 (1984-07-01), Donomoto et al.
patent: 4515866 (1985-05-01), Okamoto et al.

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