3m Innovative Properties Company

Other

Paul S Werner

Colin McCullough

Herve E Deve

Andreas Mortensen

Tracy L Anderson

Michael W Carpenter

Arnold J Cook

Lawrence A Crum

David C Lueneburg

Kenneth L Yarina

John L Sinz

Herve&prime; E D&egrave;ve

Composite wire comprising polycrystalline &agr;-Al O fibers within a matrix of aluminum, or an alloy of aluminum and up to about 2% copper. The resulting materials are characterized by their high strength and low weight are particularly well suited for applications in various industries including high voltage power transmission.

Fiber reinforced aluminum matrix composite wire

Methods for making metal matrix composite articles such as wires and tapes. The metal matrix composites include a plurality of substantially continuous, longitudinally positioned fibers in a metal matrix. The fibers are selected from the group of ceramic fibers, boron, carbon fibers, and mixtures thereof.

Method of making metal matrix composites

Method of making articles comprising polycrystalline &agr;-Al O fibers within a matrix of aluminum, or an alloy of aluminum and up to about 2% copper.

Method of making fiber reinforced aluminum matrix composite

A composite metal matrix formed of polycrystalline &agr;-Al O fibers encapsulated within a matrix of substantially pure elemental aluminum, or an alloy elemental aluminum and up to about 2% copper is disclosed. The resulting materials are characterized by their high strength and low weight are particularly well suited for applications in various industries including high voltage power transmission.

Fiber reinforced aluminum matrix composite

Metal matrix composite wires that include at least one tow comprising a plurality of substantially continuous, longitudinally positioned fibers in a metal matrix. The fibers are selected from the group of ceramic fibers carbon fibers, and mixtures thereof. The wires have certain specified characteristics such as roundness values, roundness uniformity values, and/or diameter uniformity values.

Metal matrix composite wires, cables, and method

Method of making wire comprising polycrystalline &agr;-Al O fibers within a matrix of substantially pure elemental aluminum, or an alloy elemental aluminum and up to about 2% copper.

Method of making fiber reinforced aluminum matrix composite wire

Metal matrix composite wires that include a plurality of substantially continuous, longitudinally positioned fibers in a metal matrix. The wire exhibits zero breaks over a length of at least 300 meters when tested according to a specified test.

Wire comprising polycrystalline &agr;-Al,O,fibers within a matrix of substantially pure elemental aluminum, or an alloy elemental aluminum and up to about 2% copper.

Overhead high power transmission cable comprising a plurality of wires comprising polycrystalline &agr;-Al,O,fibers within a matrix of substantially pure elemental aluminum, or an alloy elemental aluminum and up to about 2% copper.

Overhead high power transmission cable comprising fiber reinforced aluminum matrix composite wire

The present invention pertains to an apparatus for casting comprised of a pressure vessel and means for evacuating and pressurizing the vessel. The evacuating and pressurizing means is in fluidic connection with the vessel. The apparatus is also comprised of a crucible disposed in the pressure vessel within which material is melted. There is a mold disposed in the pressure vessel. Additionally, the apparatus is comprised of means for heating material in the crucible and the mold in the mold chamber such that material is melted in the crucible and stays melted as it is drawn up to the mold chamber while the evacuating and pressurizing means evacuates the vessel, and when it is forced into the mold while the evacuating and pressurizing means charges the vessel. The heating means is disposed in the vessel. The pressurizing means comprises at least one chill line which serves to chill the mold as the vessel is pressurized. The present invention also pertains to a method for casting. The method comprises the steps of placing in a mold chamber of a pressure vessel a mold; placing in a crucible of the pressure vessel a material; evacuating the vessel through the mold chamber; melting the material in the crucible; placing the crucible in fluidic connection with the mold chamber; and pressurizing the vessel at a controlled rate such that the pressurized gas flows through the chill line thereby serving the dual purpose of pressurizing the vessel and chilling the mold.

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Woodbury, MN, United States of America

Paul S Werner