Abstract
Solid freeform fabrication (SFF) is a manufacturing technology that produces parts directly from computer-aided design databases. Examples of the SFF approach are selective laser sintering (SLS) and selective laser reactive sintering (SLRS), both of which have the potential to directly produce structurally sound metallic or ceramic parts. The development of suitable materials systems that can optimize the SLS or SLRS processes are critical to this technology. For instance, nanocomposites, in which the constituents are mixed on a nanometer scale, have the potential to provide important advantages in the SLS and SLRS processes. One strategy is to design and develop nanocomposites in which one nanosize component has a lower melting point than the other nanosize component, either of which can serve as the matrix phase. The nanoscale dispersion of the low-melting component can aid the sintering process during SLS or SLRS. In this article, the philosophical basis for SLS and SLRS of nanocomposites is discussed. Conceptual design of nanocomposite systems and the SLS/SLRS results of a few exploratory systems are presented.
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Proceedings of the Solid Freeform Fabrication Symposium, ed. H.L. Marcus et al. (Austin, TX: The University of Texas at Austin, 1990, 1991, 1992, 1993).
C. Deckard and J. Beaman, “Recent Advances in Selective Laser Sintering,” Manufacturing Processes, Systems and Machines, 14th Conference on Production Research and Technology(Washington, D.C.: NSF, October 1987).
C.R. Deckard, “Method and Apparatus for Producing Parts by Selective Sintering,” U.S. patent 4,863,538 (September 5, 1989).
C.R. Deckard and J.J. Beaman, “Process and Control Issues in Selective Laser Sintering,” Measurement and Control in Manufacturing (New York: ASME, 1988), pp. 191–197.
H.L. Marcus et al., “From Computer to Component in 15 Minutes: The Integrated Manufacture of Three-Dimensional Objects,” JOM, 42(4) (1990), pp. 8–10.
D.L. Bourell et al., “Selective Laser Sintering of Metals and Ceramics,” International Journal of Powder Metallurgy (1992), pp. 369–381.
Harris L. Marcus and David L. Bourell, “Solid Freeform Fabrication Finds New Applications,” Advanced Materials and Processes, 144 (September 1993), pp. 28–35.
L.E. Brus et al, “Research Opportunities on Cluster and Cluster-Assembled Materials—A Department of Energy, Council on Materials Science Panel Report,” J. Mater. Res., 4, (1989), pp. 704–736.
H. Gleiter, “Materials with Ultrafine Grain Size,” Deformations of Polycrystals: Mechanisms and Microstructures, ed. N. Hasen, A. Horsewell, and T. Leffers (Roskilde, Norway: Risø National Laboratory, 1981), pp. 15–21.
H. Gleiter, Progress in Materials Science, 33 (1989), pp. 223–315.
R.W. Siegel, MRS Bulletin, 15 (1990), pp. 60–67.
R. Birringer and H. Gleiter, “Nanocrystalline Materials,” Encyclopedia of Materials Science and Engineering, Suppl. vol. 1, ed. R.W. Cahn (Oxford, England: Pergamon Press, 1988), pp. 339–349.
S. Komarneni, “Nanocomposite,” J. Mater. Chem., 2 (1992), pp. 1219–1230.
A.M. Kazakos, S. Komarneni, and R. Roy, “Sol-Gel Processing of Cordierite: Effect of Seeding and Optimization of Heat Treatment,” J. Mater. Res., 5 (1990), pp. 1095–1103.
S. Komarneni, Y. Suwa, and R. Roy, “Applications of Compositionally Diphasic Xerogels for Enhanced Densification: The System AL2O3-SiO3,” J. Amer. Ceram. Soc., 69 (1986), pp. C155–C156.
D. Segal, Chemical Synthesis of Advanced Ceramic Materials (Cambridge, MA: Cambridge University Press, 1989).
I.A. Aksay, G.L. McVay and D.R. Ulrich, eds., Processing Science of Advanced Ceramics (Pittsburgh, PA: MRS, 1989).
G.L. Messing, E.R. Fuller, and H. Hausner, eds., Ceramic Powder Science II, vol. 1 (Westerville, OH: American Ceramic Society, 1988).
E. Breval et al., “Sol-Gel Prepared Ni-Alumina Composite Materials,” J. Mater. Sci., 27 (1992), pp. 1464–1468.
A. Manthiram et al., “Development of Nanocomposites for Solid Freeform Fabrication,” Proceedings of the Solid Freeform Fabrication Symposium, ed. H.L. Marcus et al. (Austin, TX: The University of Texas at Austin, in press).
B.H. Kear et al., “Synthesis and Processing of Nanostructured W-Base Materials,” Advanced Topics in Materials Science and Engineering, ed. J.L. Moran-Lopez and J.M. Sanchez (New York: Plenum Press, 1993), pp. 315–332.
A. Manthiram and J.B. Goodenough, “Synthesis of High-Tc Superconductor YBa2Cu3O7-δ in Small Particle Size,” Nature, 329 (1987), pp. 701–703.
Y.T. Zhu and A. Manthiram, “A New Route for the Synthesis of Tungsten Oxide Bronzes,” J. Solid State Chem. (in press).
N.K. Vail and J. Barlow, “Microencapsulation of Finely Divided Ceramic Powders,” Proceedings of the Solid Freeform Fabrication Symposium, ed. H.L. Marcus et al. (Austin, TX: The University of Texas at Austin, 1990), pp. 8–15.
M. Kakihana etal., “Synthesis of Highly Pure YBa2Cu3O7-x Superconductors Using a Colloidal Processing Technique,” Physica C, 162 (1989), p. 931.
M.K. Agarwala etal., “HighTcDual Phase Ag-YBa2Cu307-x Composites By Selective Laser Sintering and Infiltration,” J. Mat. Sci. (submitted).
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Manthiram, A., Bourell, D.L. & Marcus, H.L. Nanophase materials in solid freeform fabrication. JOM 45, 66–70 (1993). https://doi.org/10.1007/BF03222493
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DOI: https://doi.org/10.1007/BF03222493