Specialized metallurgical processes – compositions for use therei – Compositions – Consolidated metal powder compositions
Patent
1985-05-16
1987-05-12
Lieberman, Allan M.
Specialized metallurgical processes, compositions for use therei
Compositions
Consolidated metal powder compositions
75230, 75234, 75235, C22C 109, C22C 1300, C22C 2100, C22C 2900
Patent
active
046647040
ABSTRACT:
This composite material includes reinforcing hybrid fiber mixture material in a matrix of metal which is aluminum, magnesium, copper, zinc, lead, tin, or an alloy having these as principal components. The hybrid fiber mixture is a mixture of crystalline alumina-silica fiber material and mineral fiber material. The crystalline alumina-silica fiber material has as principal components 35% to 80% by weight of Al.sub.2 O.sub.3 and 65% to 20% by weight of SiO.sub.2, with a content of other substances of less than or equal to 10% by weight, and with the percentage of mullite being greater than or equal to 15% by weight, and with the percentage of non fibrous particles with diameters greater than 150 microns being less than or equal to 5% by weight. And the mineral fiber material has as principal components SiO.sub.2, CaO, and Al.sub.2 O.sub.3, the content of MgO being less than or equal to 10% by weight, the content of Fe.sub.2 O.sub.3 being less than or equal to 5% by weight, and the content of other inorganic substances being less than or equal to 10% by weight, with the percentage of non fibrous particles being less than or equal to 20% by weight, and with the percentage of non fibrous particles with diameters greater than 150 microns being less than or equal to 7% by weight. The volume proportion of the reinforcing hybrid fiber material is at least 1%. The qualities of this composite material with regard to wear, wear on a mating member, and bending strength are good.
REFERENCES:
patent: 3541659 (1970-11-01), Cannell et al.
patent: 4259112 (1981-03-01), Dolowy, Jr. et al.
Dohnomoto Tadashi
Kubo Masahiro
Lieberman Allan M.
Toyota Jidosha & Kabushiki Kaisha
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