Ut-battelle, Inc.

Lockheed Martin Energy Research Corporation

Other

Lawrence Livermore National Security, LLC

University of California

Sandia Corporation

The United States of America As Represented by the Department of Energy

Usf Filtration & Separations Group Inc.

Queen City Forging Co.

Craig A Blue

Vinod Kumar Sikka

Louis F Aprigliano

Evan Keith Ohriner

Joseph Collin Farmer

Lonnie J Love

John Harry Perepezko

Jeffery J Haslam

Enrique J Lavernia

Nancy Yuan Yang

William H Peter

Larry Kaufman

Ronald D Ott

Frank M G Wong

Robert Bayles

Brian K Post

Levent Ozdemir

Frank Wong

Peter G Engleman

Tibor G Rozgonyi

Amit Goyal

Chad Edward Duty

Arthur H Heuer

Ahmed A Hassen

John M Lindahl

Sumner Daniel Day

Olivia A Graeve

Julie M Schoenung

David C Harper

Leo Ajdelsztajn

Xiaoyan (Jane) Ji

John D K Rivard

Leslie K Kohler

Edward J Lemieux

John T Simpson

Nathaniel R Quick

Nancy Johnston Dudney

Ilia N Ivanov

Claus Daniel

Randall F Lind

John B Wilgen

Vlastimil Kunc

David Eugene Holcomb

Tommy Joe Phelps

Ryan Dehoff

James O Kiggans, Jr

Michael Z Hu

Phillip C Chesser

Seokpum Kim

Robert Malanga

Srinath Viswanathan

Alex C Roschli

Tao Li

Ji-Won Moon

Gerald Earle Jellison, Jr

Peter D Lloyd

Michael C Borish

Gregory D Dreifus

Chad M Parish

Charlee J C Bennett

Quanqin Dai

Barry G Whitson

Steven Walker

Wei Chen

Art Clemens

John D Rivard

Christopher S Murray

Susan L Murray

Andre R Klein

Howard Robinson Mayer

Vlastimil Kune

Bentley T Beard, Ii

A system and method for improving additive manufacturing, including additive manufacturing toolpaths, is provided. The system and method includes a toolpath generator that obtains initial toolpaths of an object, identifies isolated paths in the toolpaths, and adds bridge connections between neighboring isolated paths in each layer to improve the toolpaths. The bridge connections facilitate the continuous and non-stop deposition of each layer according to improved toolpaths during additive manufacture, which can reduce total deposition time and improve the resultant additive manufacture.

System and method for additive manufacturing with toolpath bridges and resultant structure

A method for rapid manufacturing of three dimensional discontinuous fiber preforms is provided. The method includes the deposition of a polymeric material containing fibers on a surface to form a tailored charge for compression molding. The reinforced polymeric material may be a thermoplastic or a reactive polymer with viscosity low enough to allow flow through an orifice during deposition, yet high enough zero shear viscosity to retain the approximate shape of the deposited charge. The material can be deposited in a predetermined pattern to induce the desired mechanical properties through alignment of the fibers. This deposition can be performed in a single layer or in multiple layers. The alignment is achieved passively by shear alignment of the fibers or actively through fiber orientation control or mixing. The fibers can be of the desired material, length, and morphology, including short and long filaments.

Rapid manufacturing of tailored preforms

An additive manufacturing extrusion head that includes a heated nozzle for accepting a feedstock and extruding the feedstock onto a substrate at a deposition plane, the nozzle having a longitudinal extrusion axis. A reciprocating platen surrounds the nozzle, the platen operable to reciprocate along the extrusion axis at or above the deposition plane as the nozzle extrudes feedstock onto the substrate; and wherein the platen flattens the extruded feedstock such that it does not protrude above the deposition plane as the extrusion head traverses over the substrate.

Enhanced additive manufacturing with a reciprocating platen

A coating steel component with a pattern of an iron based matrix with crystalline particles metallurgically bound to the surface of a steel substrate for use as disc cutters or other components with one or more abrading surfaces that can experience significant abrasive wear, high point loads, and large shear stresses during use. The coated component contains a pattern of features in the shape of freckles or stripes that are laser formed and fused to the steel substrate. The features can display an inner core that is harder than the steel substrate but generally softer than the matrix surrounding the core, providing toughness and wear resistance to the features. The features result from processing an amorphous alloy where the resulting matrix can be amorphous, partially devitrified or fully devitrified.

In-situ composite formation of damage tolerant coatings utilizing laser

A method for producing a film, the method comprising melting a layer of precursor particles on a substrate until at least a portion of the melted particles are planarized and merged to produce the film. The invention is also directed to a method for producing a photovoltaic film, the method comprising depositing particles having a photovoltaic or other property onto a substrate, and affixing the particles to the substrate, wherein the particles may or may not be subsequently melted. Also described herein are films produced by these methods, methods for producing a patterned film on a substrate, and methods for producing a multilayer structure.

Methods for producing complex films, and films produced thereby

A composite stainless steel composition is composed essentially of, in terms of wt. % ranges: 25 to 28 Cr; 11 to 13 Ni; 7 to 8 W; 3.5 to 4 Mo; 3 to 3.5 B; 2 to 2.5 Mn; 1 to 1.5 Si; 0.3 to 1.7 C; up to 2 O; balance Fe. The composition has an austenitic matrix phase and a particulate, crystalline dispersed phase.

Nano-composite stainless steel

Disclosed are configurations of long-range ordered features of solar cell materials, and methods for forming same. Some features include electrical access openings through a backing layer to a photovoltaic material in the solar cell. Some features include textured features disposed adjacent a surface of a solar cell material. Typically the long-range ordered features are formed by ablating the solar cell material with a laser interference pattern from at least two laser beams.

High throughput parallel backside contacting and periodic texturing for high-efficiency solar cells

A system for coating a surface comprises providing a source of amorphous metal, providing ceramic particles, and applying the amorphous metal and the ceramic particles to the surface by a spray. The coating comprises a composite material made of amorphous metal that contains one or more of the following elements in the specified range of composition: yttrium (&#x2267;1 atomic %), chromium (14 to 18 atomic %), molybdenum (&#x2267;7 atomic %), tungsten (&#x2267;1 atomic %), boron (&#x2266;5 atomic %), or carbon (&#x2267;4 atomic %).

Corrosion resistant amorphous metals and methods of forming corrosion resistant amorphous metals

A thin film solar cell and a method fabricating thin film solar cells on flexible substrates. The method includes including providing a flexible polymeric substrate, depositing a photovoltaic precursor on a surface of the substrate, such as CdTe, ZrTe, CdZnTe, CdSe or Cu(In,Ga)Se, and exposing the photovoltaic precursor to at least one 0.5 microsecond to 10 second pulse of predominately infrared light emitted from a light source having a power output of about 20,000 W/cmor less to thermally convert the precursor into a crystalline photovoltaic material having a photovoltaic efficiency of greater than one percent, the conversion being carried out without substantial damage to the substrate.

High volume method of making low-cost, lightweight solar materials

A method of coating a surface comprising providing a source of amorphous metal that contains manganese (1 to 3 atomic %), yttrium (0.1 to 10 atomic %), and silicon (0.3 to 3.1 atomic %) in the range of composition given in parentheses; and that contains the following elements in the specified range of composition given in parentheses: chromium (15 to 20 atomic %), molybdenum (2 to 15 atomic %), tungsten (1 to 3 atomic %), boron (5 to 16 atomic %), carbon (3 to 16 atomic %), and the balance iron; and applying said amorphous metal to the surface by a spray.

Compositions of corrosion-resistant Fe-based amorphous metals suitable for producing thermal spray coatings

A method of forming a composite sheet includes disposing an untextured metal or alloy first sheet in contact with a second sheet in an aligned opposing position; bonding the first sheet to the second sheet by applying an oscillating ultrasonic force to at least one of the first sheet and the second sheet to form an untextured intermediate composite sheet; and annealing the untextured intermediate composite sheet at a temperature lower than a primary re-crystallization temperature of the second sheet and higher than a primary re-crystallization temperature of the first sheet to convert the untextured first sheet into a cube textured sheet, wherein the cube texture is characterized by a &#x3c6;-scan having a FWHM of no more than 15&#xb0; in all directions, the second sheet remaining untextured, to form a composite sheet.

Composite biaxially textured substrates using ultrasonic consolidation

A method of forming a composite sheet includes the steps of: providing a first sheet having a surface and including a metal or alloy, the first sheet having a given strength characteristic; providing a second sheet having a surface and a strength characteristic that is superior to the given strength characteristic of the first sheet; disposing the first sheet and the second sheet in an aligned opposing position with at least a portion of the surface of the first sheet touching the surface of the first sheet to form a contact area; and bonding the first sheet to the second sheet at least in part by applying an oscillating ultrasonic force to at least one of the first sheet and the second sheet to form a composite sheet, the first sheet having a cube texture characterized by a &#x3c6;-scan having a FWHM of no more than 15&#xb0; in all directions.

Growing community of inventors

Knoxville, TN, United States of America

Craig A Blue