Abstract
Laser sintering is a popular additive manufacturing technology, particularly for service parts. Invented by C. Deckard in the mid-1980s, the approach of using a laser to densify a powder bed selectively has been extensively researched and has been applied to metals, ceramics, polymers and composites. In the traditional powder-metallurgical sense, sintering involves solid-state atomic transport resulting in neck formation and eventual densification in a powder mass. The use of the term “sintering” as a descriptive term for the powder-bed additive manufacturing process has been problematical to the technical community, because the predominant densification mechanism has been shown for most applications to be melting and reflow. The term has perpetuated as a name for the additive manufacturing process, at least for polymers. The technical term “sintering” is accurately associated with laser sintering insofar as powder pre-processing and part post-processing are concerned. It may also be used to describe formation of “part cake”. This paper describes the circumstances surrounding the coining of the term, “laser sintering” and provides some examples of how sintering is used in pre- and post-processing.
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References
ISO/ASTM 52792 (West Conshohocken PA: ASTM, 2015).
C. Deckard, private communication, 2015.
C. Deckard, (Masters thesis, Univ. Texas Austin, 1986).
J. Frenkel, J. Phys. (USSR) 9, 385 (1945).
G.W. Scherer, J. Am. Cer. Soc. 69, 206 (1986).
G.W. Scherer, J. Am. Cer. Soc. 60, 236 (1986).
M.-S.M. Sun, J.C. Nelson, J.J. Beaman, and J.W. Barlow, in Proceedings of the SFF Symposium, vol. 46 (1991).
R.M. German, Powder Metallurgy & Particulate Materials Processing (Princeton: Metal Powder Industries Federation, 2005), p. 228.
M.-S.M. Sun, J.J. Beaman, and J.W. Barlow, in Proceedings of the SFF Symposium, vol. 146 (1990).
E. Moeskops, N. Kamperman, B. van de Vorst, and R. Knoppers, in Proceedings of the SFF Symposium, vol. 60 (2004).
C.E. Majewski, H.Zarringhalam, and N. Hopkinson, in Proceedings of the SFF Symposium, vol. 45 (2008).
H. Zarringhalam, C. Majewski, and N. Hopkinson, Rapid Prototyp. J. 15, 126 (2009).
M. Yuan and D. Bourell, Rapid Prototyp. J. 19, 437 (2013).
M. Wohlert, D.L. Bourell, S. Das, and J.J. Beaman, in Proceedings of the SFF Symposium, vol. 150 (2000).
M.F. Ashby, Sintering and Isostatic Pressing Diagrams (Cambridge UK: University of Cambridge, 1990).
A.S. Helle, K.E. Easterling, and M.F. Ashby, Acta Metall. 33, 2163 (1985).
D.L. Bourell, M. Wohlert, and N. Harlan, in Deformation, Processing and Properties of Structural Materials—A Symposium Honoring Oleg D. Sherby, eds. E.M. Taleff, C.K. Syn, and D.R. Lesuer, (Warrendale PA: TMS, 2000), pp. 219–230.
E.D. Calvert, U.S. Bureau of Mines Report of Investigations, vol. 8541 (1981).
M. Wohlert, D.L. Bourell, S. Das, and J.J. Beaman, in Proceedings of the SFF Symposium, vol. 150 (2000).
ASTM F2792-2010 (West Conshohocken PA: ASTM, 2010).
J.-P. Kruth and K.U. Leuven, private communication, 2015.
W. Meiners, K. Wissenbach, and A. Gasser, German Patent DE19649865 (Berlin: DIN, filed 2 December 1996).
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Bourell, D.L. Sintering in Laser Sintering. JOM 68, 885–889 (2016). https://doi.org/10.1007/s11837-015-1780-2
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DOI: https://doi.org/10.1007/s11837-015-1780-2