METHODS FOR FABRICATING THREE-DIMENSIONAL METALLIC OBJECTS VIA ADDITIVE MANUFACTURING USING METAL OXIDE PASTES

摘要

Methods of forming three-dimensional metallic objects are provided. A metal oxide paste comprising metal oxide particles, a polymeric binder and an organic solvent is extruded through a tip to deposit sequential layers of the metal oxide paste on a substrate to form a three-dimensional metal oxide object. The three-dimensional metal oxide object is exposed to a reducing gas at a temperature and for a period of time sufficient to reduce and to sinter the metal oxide particles to form a three-dimensional metallic object. Depending upon the composition of the metal oxide paste, the three-dimensional metallic object may be composed of a single metal, a simple or complex metal-metal alloy, or a metal-ceramic composite.

主权项

1. A method of forming a three-dimensional metallic object, the method comprising:
(a) extruding a paste comprising metal oxide particles or non-oxide metal ceramic particles; a polymeric binder; and an organic solvent, through a tip to deposit sequential layers of the paste on a substrate, whereby a three-dimensional metal oxide object or a three-dimensional non-oxide metal ceramic object is formed on the substrate, and (b) exposing the three-dimensional metal oxide object or the three-dimensional non-oxide metal ceramic object to a reducing gas at a temperature and for a period of time sufficient to reduce and to sinter the metal oxide particles or the non-oxide metal ceramic particles, whereby the three-dimensional metallic object is formed.