Sinter joining of components of different additive manufacturing technologies

Topic

Shaping processes not only have their advantages, but also always have limitations. This is equally true for the various CerAM technologies, for example in terms of feasible component size, resolution or general manufacturability. By combining different processes, their advantages can be combined and the existing limits can be overcome. The final sintering process, which is essential for ceramic materials, offers the possibility of joining together individual parts produced by different shaping processes. For this purpose, we use the shrinkage joining process developed at IKTS:

  1. Constructive decomposition of the component into various individual parts at the CAD stage
  2. Shaping of the individual parts through different CerAM technologies
  3. Separate debinding and sintering at different temperatures
  4. Joining to form a monolithic component by joint sintering and shrinkage joining
Ceramic aerospike nozzle (design by Felix Müller): hybrid production by means of shrinkage joining, CerAM VPP part (left), green-machined CerAM FFF part (center), shrinkage joined part (right).
© Fraunhofer IKTS
Ceramic aerospike nozzle (design by Felix Müller): hybrid production by means of shrinkage joining, CerAM VPP part (left), green-machined CerAM FFF part (center), shrinkage joined part (right).