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New materials and applications by 3D-Printing for innovative approaches

  • : Juan F. Isaza P.1, Claus Aumund-Kopp1, Sandra Wieland1, Frank Petzoldt1, Mathis Bauschulte1, Dirk Godlinski1
  • : 1Fraunhofer IFAM
  • : PDF Download
  • : 2015

Abstract

Three-dimensional printing belongs to the additive manufacturing processes in which powder materials are deposited in layers and selectively joined with binder from an ink-jet print head. The parts are generated directly from CAD-data using polymers, metals or ceramics. The process chain for parts manufacturing can be tailored depending on the uses of the end product. For the manufacture of near net shape products, e.g. complex tools with conformal cooling channels, the printed green parts can either be subjected to a liquid phase sintering step or to a partial sintering without shrinkage of green parts and a subsequent infiltration with low melting alloys to achieve full density. This interesting approach enables the use of new materials for example in medicine, where a titanium-silver composite was developed in order to decrease the magnetic susceptibility of Ti6Al4V, while maintaining its favorable properties. Alternatively, porous parts can also be produced by means of 3D printing, making possible the manufacture of custom parts, such as implants, with an open porosity for improving the bone growth. In this paper, the suitability and implementation of 3D-Printing for small scale series production are presented and discussed.

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