Method of freeform fabrication by selective gelation of powder suspensions
Abstract
The present invention is a novel method for freeform fabrication. Specifically, the method of solid freeform fabrication has the steps of: (a) preparing a slurry by mixing powder particles with a suspension medium and a gelling polysaccharide; (b) making a layer by depositing an amount of said powder slurry in a confined region; (c) hardening a selected portion of the layer by applying a gelling agent to the selected portion; and (d) repeating steps (b) and (c) to make successive layers and forming a layered object. In many applications, it is desirable to remove unhardened material followed by heating to remove gellable polysaccharide then sintering.
- Inventors:
-
- Kennewick, WA
- Issue Date:
- Research Org.:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- OSTI Identifier:
- 871272
- Patent Number(s):
- 5697043
- Assignee:
- Battelle Memorial Institute (Richland, WA)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER
B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29C - SHAPING OR JOINING OF PLASTICS
- DOE Contract Number:
- AC06-76RL01830
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- method; freeform; fabrication; selective; gelation; powder; suspensions; novel; specifically; solid; steps; preparing; slurry; mixing; particles; suspension; medium; gelling; polysaccharide; layer; depositing; amount; confined; region; hardening; selected; portion; applying; agent; repeating; successive; layers; forming; layered; applications; desirable; remove; unhardened; material; followed; heating; gellable; sintering; powder particles; novel method; successive layers; selected portion; successive layer; hardened material; freeform fabrication; repeating step; mixing powder; /264/419/
Citation Formats
Baskaran, Suresh, and Graff, Gordon L. Method of freeform fabrication by selective gelation of powder suspensions. United States: N. p., 1997.
Web.
Baskaran, Suresh, & Graff, Gordon L. Method of freeform fabrication by selective gelation of powder suspensions. United States.
Baskaran, Suresh, and Graff, Gordon L. Wed .
"Method of freeform fabrication by selective gelation of powder suspensions". United States. https://www.osti.gov/servlets/purl/871272.
@article{osti_871272,
title = {Method of freeform fabrication by selective gelation of powder suspensions},
author = {Baskaran, Suresh and Graff, Gordon L},
abstractNote = {The present invention is a novel method for freeform fabrication. Specifically, the method of solid freeform fabrication has the steps of: (a) preparing a slurry by mixing powder particles with a suspension medium and a gelling polysaccharide; (b) making a layer by depositing an amount of said powder slurry in a confined region; (c) hardening a selected portion of the layer by applying a gelling agent to the selected portion; and (d) repeating steps (b) and (c) to make successive layers and forming a layered object. In many applications, it is desirable to remove unhardened material followed by heating to remove gellable polysaccharide then sintering.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 1997},
month = {Wed Jan 01 00:00:00 EST 1997}
}
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