1995 / Solid Freeform Fabrication Proceedings
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Author M.K. Agarwala, R. van Weeren, R. Vaidyanathan, A. Bandyopadhyay, G. Carrasquilo, V. Jamalabad, N. Langrana, A. Safari (a), S.H. Garofalini (a), S.C. Danforth (a), J. Burlew (b), R. Donalds (b), P. Whalen (b), C. Ballard (b), (a) Rutgers University, (b) AlliedSignal Research and Technology
Source Solid Freeform Fabrication Proceedings, 1995, pp 1-8
Abstract Fused Deposition of Ceramics (FDC) is a SFF technique, based on FDM (TM) technology, for fabrication of advanced structural ceramics from powder/binder filaments. In this study, reinforced (ISR) Si3N4 powder and polymer/wax based binder systems were used as filament material for FDC processing using a commercially available FDM system, 3D Modeler (TM). Powder/binder feedstocks were mixed using a torq'ue rheometer and filaments were fabricated using a capillary rheometer and twin screw extruder. Green FDC components were built from these filaments and then characterized for inter-road and inter-layer bonding. Binder removal procedures were established for FDC green components to yield brown parts without distortion or shape change. Brown FDC parts were characterized for carbon residue, pore distribution and dimensional changes. Brown FDC parts were then sintered and the sintered density, microstructure, and shrinkage anisotropy were studied. (Auth abstract) [References: 8]
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