1993 / Solid Freeform Fabrication Proceedings
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Author Lucy Deckard, and T. Dennis Claar; Lanxide Corporation
Source Solid Freeform Fabrication Proceedings, 1993, pp 215-222
Abstract T'his paper will discuss the tool-less fabrication of functional advanced composites by infusion of a ceramic or metal matrix into Selective Laser Sintered (SLS) porous ceramic preforms using Lanxide's patented matrix infusion processes. The fabrication of porous preforms of particulate ceramics by SLS at the University of Texas at Austin is described in a companion paper. The PRIMEX (TM) pressureless metal infiltration process was used to infiltrate aluminum matrices into both SiC and AL2O3 particulate SLS preforms to make metal matrix composites without the use of tooling. Also, SrCp/AL2O3 ceramic matrix composites were fabricated using the DIMOX (TM) directed metal oxidation- process to grow an AL2O3matrix into porous SiC particulate SLS preforms. Measured properties and microstructures of the resulting composites will be presented and compared to similar composites made using conventionally fabricated preforms. The rapid prototyping of a SiCp/AL MMC electronic power package to near-net shape from an SLS preform will also be described. (Auth abstract) [No References]
Solid Freeform Fabrication Proceedings can be obtained from: The Solid Freeform Fabrication Symposium
or contact:
The University of Texas at Austin
Laboratory for Freeform Fabrication / Texas Materials Institute
Mechanical Engineering Dept.
c/o The Solid Freeform Fabrication Symposium
MC C2200
Austin, TX 78712-1063 USA
512-471-3026; 512-471-7681 FX; Email: sffsymp@uts.cc.utexas.edu