公开(公告)号：US20170252804A1

公开(公告)日：2017-09-07

申请号：US15447062

申请日：2017-03-01

Applicant: LOCKHEED MARTIN CORPORATION

Inventor： David Guy Hanni ,  James Charles Beffa ,  Robert Barrett Geyer ,  Lawrence C. Loh ,  Kelly M. Parent ,  Alfred A. Zinn

IPC: B22F3/10 ,  B22F5/00 ,  B22F1/00 ,  B33Y10/00 ,  B29C67/00

CPC classification number: B22F3/1021 ,  B22F1/0018 ,  B22F3/008 ,  B22F5/00 ,  B22F2301/10 ,  B22F2302/45 ,  B22F2998/10 ,  B22F2999/00 ,  B33Y10/00 ,  B33Y70/00 ,  H05K1/0284 ,  H05K3/0014 ,  H05K3/1275 ,  H05K2201/0224 ,  H05K2201/0257 ,  B22F1/0062

Abstract: It is currently difficult to deposit metallic conductors as contiguous metal traces during additive manufacturing processes, particularly when dielectric materials are present that are readily heat-softened. Additive manufacturing processes can include: providing a first printing composition containing metal nanoparticles and a second printing composition containing a dielectric material; depositing the first and second printing compositions together to form an object having a desired shape, in which the metal nanoparticles are unconsolidated with one another after being deposited; and heating the object above a fusion temperature of the metal nanoparticles and below a softening temperature of the dielectric material to define one or more contiguous metal traces in the object in which the metal nanoparticles are at least partially fused together with one another in a defined shape.