Journal of Materials Research and Technology (Jan 2017)

3D metal droplet printing development and advanced materials additive manufacturing

  • Lawrence E. Murr,
  • Wayne L. Johnson

DOI
https://doi.org/10.1016/j.jmrt.2016.11.002
Journal volume & issue
Vol. 6, no. 1
pp. 77 – 89

Abstract

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While commercial additive manufacturing processes involving direct metal wire or powder deposition along with powder bed fusion technologies using laser and electron beam melting have proliferated over the past decade, inkjet printing using molten metal droplets for direct, 3D printing has been elusive. In this paper we review the more than three decades of development of metal droplet generation for precision additive manufacturing applications utilizing advanced, high-temperature metals and alloys. Issues concerning process optimization, including product structure and properties affected by oxidation are discussed and some comparisons of related additive manufactured microstructures are presented.

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