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JOM

, Volume 68, Issue 3, pp 885–889 | Cite as

Sintering in Laser Sintering

  • David L. Bourell
Article

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.

References

  1. 1.
    ISO/ASTM 52792 (West Conshohocken PA: ASTM, 2015).Google Scholar
  2. 2.
    C. Deckard, private communication, 2015.Google Scholar
  3. 3.
    C. Deckard, (Masters thesis, Univ. Texas Austin, 1986).Google Scholar
  4. 4.
    J. Frenkel, J. Phys. (USSR) 9, 385 (1945).Google Scholar
  5. 5.
    G.W. Scherer, J. Am. Cer. Soc. 69, 206 (1986).Google Scholar
  6. 6.
    G.W. Scherer, J. Am. Cer. Soc. 60, 236 (1986).CrossRefGoogle Scholar
  7. 7.
    M.-S.M. Sun, J.C. Nelson, J.J. Beaman, and J.W. Barlow, in Proceedings of the SFF Symposium, vol. 46 (1991).Google Scholar
  8. 8.
    R.M. German, Powder Metallurgy & Particulate Materials Processing (Princeton: Metal Powder Industries Federation, 2005), p. 228.Google Scholar
  9. 9.
    M.-S.M. Sun, J.J. Beaman, and J.W. Barlow, in Proceedings of the SFF Symposium, vol. 146 (1990).Google Scholar
  10. 10.
    E. Moeskops, N. Kamperman, B. van de Vorst, and R. Knoppers, in Proceedings of the SFF Symposium, vol. 60 (2004).Google Scholar
  11. 11.
    C.E. Majewski, H.Zarringhalam, and N. Hopkinson, in Proceedings of the SFF Symposium, vol. 45 (2008).Google Scholar
  12. 12.
    H. Zarringhalam, C. Majewski, and N. Hopkinson, Rapid Prototyp. J. 15, 126 (2009).CrossRefGoogle Scholar
  13. 13.
    M. Yuan and D. Bourell, Rapid Prototyp. J. 19, 437 (2013).CrossRefGoogle Scholar
  14. 14.
    M. Wohlert, D.L. Bourell, S. Das, and J.J. Beaman, in Proceedings of the SFF Symposium, vol. 150 (2000).Google Scholar
  15. 15.
    M.F. Ashby, Sintering and Isostatic Pressing Diagrams (Cambridge UK: University of Cambridge, 1990).Google Scholar
  16. 16.
    A.S. Helle, K.E. Easterling, and M.F. Ashby, Acta Metall. 33, 2163 (1985).CrossRefGoogle Scholar
  17. 17.
    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.Google Scholar
  18. 18.
    E.D. Calvert, U.S. Bureau of Mines Report of Investigations, vol. 8541 (1981).Google Scholar
  19. 19.
    M. Wohlert, D.L. Bourell, S. Das, and J.J. Beaman, in Proceedings of the SFF Symposium, vol. 150 (2000).Google Scholar
  20. 20.
    ASTM F2792-2010 (West Conshohocken PA: ASTM, 2010).Google Scholar
  21. 21.
    J.-P. Kruth and K.U. Leuven, private communication, 2015.Google Scholar
  22. 22.
    W. Meiners, K. Wissenbach, and A. Gasser, German Patent DE19649865 (Berlin: DIN, filed 2 December 1996).Google Scholar

Copyright information

© The Minerals, Metals & Materials Society 2016

Authors and Affiliations

  1. 1.The University of Texas at AustinAustinUSA

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