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INVENTORS: Jeantette; Francisco P. (Albuquerque, NM); Keicher; David M. (Albuquerque, NM); Romero; Joseph A. (Albuquerque, NM); Schanwald; Lee P. (Albuquerque, NM).
ASSIGNEES: Sandia Corporation (Albuquerque, NM).
U.S. CLASS: 219/121.63; 219/121.64; 219/121.65; 219/121.66; 219/121.84
ABSTRACT: A method and system are provided for producing complex, three-dimensional, net shape objects from a variety of powdered materials. The system includes unique components to ensure a uniform and continuous flow of powdered materials as well as to focus and locate the flow of powdered materials with respect to a laser beam which results in the melting of the powdered material. The system also includes a controller so that the flow of molten powdered materials can map out and form complex, three-dimensional, net-shape objects by layering the molten powdered material. Advantageously, such complex, three-dimensional net-shape objects can be produced having material densities varying from 90% of theoretical to fully dense, as well as a variety of controlled physical properties. Additionally, such complex, three-dimensional objects can be produced from two or more different materials so that the composition of the object can be transitioned from one material to another. XX
