Method of freeform fabrication by selective gelation of powder suspensions

Baskaran, S; Graff, G L

Title: Method of freeform fabrication by selective gelation of powder suspensions

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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:: Baskaran, S; Graff, G L

Issue Date:: 1997-12-09

Research Org.:: Battelle Memorial Institute, Columbus, OH (United States)

Sponsoring Org.:: USDOE, Washington, DC (United States)

OSTI Identifier:: 563649

Patent Number(s):: 5697043

Application Number:: PAN: 8-652,872

Assignee:: Battelle Memorial Inst., Richland, WA (United States)

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

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                    Baskaran, S, and Graff, G L. Method of freeform fabrication by selective gelation of powder suspensions.  United States: N. p., 1997. 
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                    Baskaran, S, & Graff, G L. Method of freeform fabrication by selective gelation of powder suspensions.  United States.

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                    Baskaran, S, and Graff, G L. Tue .  
        "Method of freeform fabrication by selective gelation of powder suspensions".  United States.

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@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}

}

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