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Solid freeform fabrication using chemically reactive suspensions

United States Patent

September 24, 2002
View the Complete Patent at the US Patent & Trademark Office
Sandia National Laboratories - Visit the Intellectual Property Management and Licensing Website
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).
Morisette; Sherry L. (Belmont, MA), Cesarano, III; Joseph (Albuquerque, NM), Lewis; Jennifer A. (Urbana, IL), Dimos; Duane B. (Albuquerque, NM)
Sandia Corporation (Albuquerque, NM)
09/ 721,835
November 22, 2000
The United States Government has rights in this invention pursuant to Department of Energy Contract No. DE-AC04-94AL85000 with Sandia Corporation.