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Machinable Porous Gold Structures For Decorative Applications Made Via Supersolidus Liquid Phase Sintering

  • : Olaf Andersen1, Cris Kostmann1, Peter Quadbeck1, Frédéric Diologent2, Damien Colas2, Bernd Kieback3
  • : 1Fraunhofer IFAM, 2VV, Branch of Richemont International SA, 3Technical University of Dresden
  • : PDF Download
  • : 2016


Typical 18 ct. gold alloys like white, yellow, and red gold lend themselves for supersolidus liquid phase sintering due to a sufficient difference between solidus and liquidus temperature. In search of non-conventional design opportunities for decorative applications, this fact has been successfully exploited in this feasibility study for the manufacturing of sintered 18 ct. gold fiber structures from all three gold varieties as well as a foam-type material from yellow gold. Obtained porosities ranged from approximately 50 to 70 % for the fiber structures and reached up to 94.5 % for the foams. In order to make precisely shaped parts from these porous gold materials, a high-speed milling route was developed.



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