METHODS FOR THE CONTROL OF GRAIN GROWTH IN THE SINTERING OF POWDERED MATERIALS VIA NANO-PARTICLE JETTING

A method for controlling grain growth in articles of manufacture produced using nano-particle jetting additive manufacturing processes includes the steps of; providing or obtaining nanoparticles of a bulk material, providing or obtaining nanoparticles of a dopant material different from the bulk mat...

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Bibliographische Detailangaben
Hauptverfasser:	Peralta-Duran, Hector Alonso, Kington, Harry
Format:	Patent
Sprache:	eng
Schlagworte:	ADDITIVE MANUFACTURING TECHNOLOGY ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CASTING MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER PERFORMING OPERATIONS POWDER METALLURGY SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING CEMENT, CLAY, OR STONE WORKING METALLIC POWDER WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A method for controlling grain growth in articles of manufacture produced using nano-particle jetting additive manufacturing processes includes the steps of; providing or obtaining nanoparticles of a bulk material, providing or obtaining nanoparticles of a dopant material different from the bulk material, supplying the bulk material and the dopant material to a nano-particle jetting apparatus, and using the nano-particle jetting apparatus, building-up the article of manufacture in a layer-by-layer manner. Each layer includes a mixture of the bulk material particles and the dopant material particles. Furthermore, the method includes sintering the article of manufacture. During sintering, the presence of the dopant material mixed with the bulk material moderates the grain growth of the bulk material.