3m Innovative Properties Company

Minnesota Mining and Manufacturing Company

Michael W Carpenter

Satinder K Nayar

Ronald W Gerdes

Kamal E Amin

Herve E Deve

Paul S Werner

Colin McCullough

Lawrence A Crum

Jonathan G Storer

Lawrence L Martin

David C Lueneburg

Kenneth L Yarina

John L Sinz

An acoustic system for applying vibratory energy including a horn connected to an ultrasonic energy source. The horn defines an overall length and wavelength, and at least a leading section thereof is comprised of a ceramic material. The leading section has a length of at leastthe horn wavelength. In one preferred embodiment, an entirety of the horn is a ceramic material, and is mounted to a separate component, such as a waveguide, via an interference fit. Regardless, by utilizing a ceramic material for at least a significant portion of the horn, the ultrasonic system of the present invention facilitates long-term operation in extreme environments such as high temperature and/or corrosive fluid mediums. The present invention is useful for fabrication of metal matrix composite wires.

Ultrasonic energy system and method including a ceramic horn

An acoustic system for applying vibratory energy including a horn connected to an ultrasonic energy source. The horn defines an overall length and wavelength, and at least a leading section thereof is comprised of a ceramic material. The leading section has a length of at least &#x215b; the horn wavelength. In one preferred embodiment, an entirety of the horn is a ceramic material, and is mounted to a separate component, such as a waveguide, via an interference fit. Regardless, by utilizing a ceramic material for at least a significant portion of the horn, the ultrasonic system of the present invention facilitates long-term operation in extreme environments such as high temperature and/or corrosive fluid mediums. The present invention is useful for fabrication of metal matrix composite wires.

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

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

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.

Abrasive particles comprising a core of alumina-based mineral coated by cathodic arc deposition with a metal boride, carbide, or nitride refractory material are provided. The core can be fused alumina or an alumina-based ceramic. Improved abrasive products having at least a portion of their conventional abrasive particles replaced with the coated abrasive particles are also provided.

Growing community of inventors

Saint Paul, MN, United States of America

Michael W Carpenter