H.c. Starck Gmbh

Aerojet-general Corporation

H.c. Starck Solutions Coldwater, LLC

H.c. Starck Solutions Euclid, LLC

H.c. Stark Inc.

H.c. Stark Solutions Coldwater, LLC

H.c. Starck Place

Michael Thomas Stawovy

Scott D Ohm

Fahrron C Fill

Gary Alan Rozak

David B Smathers

Patrick Hogan

Maria Bozena Winnicka

Steven Alfred Miller

Stefan Zimmermann

Scott Jeffrey Volchko

Mark E Gaydos

Francois-Charles Dary

William Loewenthal

Timothy J Brent

In various embodiments, metallic alloy powders are formed at least in part by spray drying to form agglomerate particles and/or plasma densification to form composite particles.

Tungsten heavy metal alloy powders and methods of forming them

In various embodiments, wire composed at least partially of arc-melted refractory metal material is utilized to fabricate three-dimensional parts by additive manufacturing.

Fabrication of metallic parts by additive manufacturing

In various embodiments, metallic alloy powders are utilized as feedstock, or to fabricate feedstock, utilized in additive manufacturing processes to form three-dimensional metallic parts. Such feedstock includes composite particles each comprising a mixture and/or alloy of a first constituent metal and one or more second constituent metals, where each of the particles comprises a plurality of grains each surrounded by a matrix, the grains comprising the first constituent metal, and the matrix comprising the one or more second constituent metals.

In various embodiments, three-dimensional layered metallic parts are substantially free of gaps between successive layers, are substantially free of cracks, and have densities no less than 97% of the theoretical density of the metallic material.

High-density, crack-free metallic parts

In various embodiments, metallic wires are fabricated by combining one or more powders of substantially spherical metal particles with one or more powders of non-spherical particles within one or more optional metallic tubes. The metal elements within the powders (and the one or more tubes, if present) collectively define a high entropy alloy of five or more metallic elements or a multi-principal element alloy of four or more metallic elements.

Fabrication of high-entropy alloy wire and multi-principal element alloy wire

In various embodiments, metallic alloy powders are utilized as feedstock, or to fabricate feedstock, utilized in additive manufacturing processes to form three-dimensional metallic parts. Such three-dimensional parts are fabricated by providing a powder bed containing particles each comprising a mixture and/or alloy of constituent elemental metals, forming a first layer of the part by (i) dispersing a binder into the powder bed, and (ii) curing the binder, the first layer of the shaped part comprising particles bound together by cured binder, disposing a layer of the particles over the first layer of the part, forming subsequent layers of the part, and then sintering the part.

In various embodiments, additive manufacturing is utilized to fabricate three-dimensional metallic parts using metallic alloy wire as a feedstock material.

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Cleveland Heights, OH, United States of America

Michael Thomas Stawovy