Solid freeform fabrication using chemically reactive suspensions

Patent · Tue Jan 01 00:00:00 EST 2002

OSTI ID:874753

Morisette, Sherry L ^[1]; Lewis, Jennifer A ^[2]; Dimos, Duane B ^[3]

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1. Belmont, MA
2. Urbana, IL
3. Albuquerque, NM

The effects of processing parameters and suspension chemorheology on the deposition behavior of SFF components derived from polymeric-based gelcasting suspensions combines the advantages associated with SFF fabrication, including the ability to spatially tailor composition and structure as well as reduced tooling costs, with the improved handling strength afforded by the use of gel based formulations. As-cast free-formed Al.sub.2 O.sub.3 components exhibited uniform particle packing and had minimal macro-defects (e.g., slumping or stair casing) and no discernable micro-defects (e.g., bubbles or cracking).

• Research Organization: Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
• DOE Contract Number: AC04-94AL85000
• Assignee: Sandia Corporation (Albuquerque, NM)
• Patent Number(s): US 6454972
• OSTI ID: 874753
• Country of Publication: United States
• Language: English

Related Subjects

solid
freeform
fabrication
chemically
reactive
suspensions
effects
processing
parameters
suspension
chemorheology
deposition
behavior
sff
components
derived
polymeric-based
gelcasting
combines
advantages
associated
including
ability
spatially
tailor
composition
structure
reduced
tooling
costs
improved
handling
strength
afforded
based
formulations
as-cast
free-formed
alsub2
osub3
exhibited
uniform
particle
packing
minimal
macro-defects
slumping
stair
casing
discernable
micro-defects
bubbles
cracking
chemically react
chemically reactive
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