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US 12,678,860 B2Granted
Three-dimensional printing of metal objects using binding agent with copper nitrate
AssigneePeridot Print LLC
InventorsJohn Samuel Dilip Jangam, Thomas Craig Anthony, Lihua Zhao
Life of this patent
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Abstract
The present disclosure is drawn to a three-dimensional printing kit and can include a particulate build material including from about 80 wt % to about 100 wt % metal particles, and a binding agent including water, from about 0.01 wt % to about 5 wt % organic compounds, and from about 20 wt % to about 60 wt % copper nitrate.
Claims10
A method of three-dimensional printing, the method comprising:
- iteratively applying individual layers of a particulate build material comprising from about 80 wt % to about 100 wt % of metal-containing particles;
- based on a 3D object model, selectively and iteratively applying a binding agent to the individual layers of the particulate build material to define a green body object formed from multiple individual layers within a powder bed of the particulate build material, wherein the binding agent comprises an aqueous liquid vehicle and a copper nitrate;
- and
- heat curing the green body object by heat soaking the green body object at a temperature of from about 70° C. to about 200° C. for a time period of from about 30 minutes to about 8 hours after the green body object is formed,
- wherein after the heat curing, from about 30 wt % to 100 wt % of the copper nitrate in the green body object is in the form of copper hydroxynitrate.
2 more elements
Dependencies are inferred from the claim text.