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Title: 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. 2 figs.

Inventors:
;
Issue Date:
Research Org.:
Battelle Memorial Institute
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
563649
Patent Number(s):
5,697,043
Application Number:
PAN: 8-652,872
Assignee:
Battelle Memorial Inst., Richland, WA (United States) PTO; SCA: 360601; PA: EDB-98:015415; SN: 98001896316
DOE Contract Number:  
AC06-76RL01830
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 9 Dec 1997
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; POWDERS; SOL-GEL PROCESS; POLYSACCHARIDES; SLURRIES; CURING; SHAPE; LAYERS; HEAT TREATMENTS

Citation Formats

Baskaran, S., and Graff, G.L. Method of freeform fabrication by selective gelation of powder suspensions. United States: N. p., 1997. Web.
Baskaran, S., & Graff, G.L. Method of freeform fabrication by selective gelation of powder suspensions. United States.
Baskaran, S., and Graff, G.L. Tue . "Method of freeform fabrication by selective gelation of powder suspensions". United States.
@article{osti_563649,
title = {Method of freeform fabrication by selective gelation of powder suspensions},
author = {Baskaran, S. and Graff, G.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. 2 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {12}
}