F R A U N H O F E R - C E N T E R F O R
H I G H T E M P E R AT U R E M AT E R I A L S A N D D E S I G N H T L
Additive ManufacturingPlease feel free to contact us:
Fraunhofer-Center for
High Temperature Materials and Design HTL
Gottlieb-Keim-Straße 62
95448 Bayreuth
www.htl.fraunhofer.de
Dr. Sarig Nachum
Tel.: +49 921 78510-500
Joachim Vogt
Tel.: +49 921 78510-417
Fraunhofer-Center HTL is certified to acc. ISO 9001:2008
Technical data CeraFab 7500
Lateral resolution: 40 μm (635 dpi)
Layer thickness: 25 μm
Building envelope (X,Y,Z): 76 x 43 x 150 mm3
Building speed: 2,5 – 10 mm per hour
Available materials
• LithaLox HP 500 (Al2O3)
• LithaCon 3Y 610 purple (3Y-ZrO2)
Technical data M-Flex
Lateral resolution: 64 μm
Layer thickness: 100 μm
Building envelope (X,Y,Z): 400 x 250 x 250 mm3
Building speed: 3 - 12 mm per hour
Available materials
• 316 and 420 stainless steel (infiltrated with bronze optional)
• Inconnel 625
• Iron (infiltrated with bronze optional)
• Tungsten and Tungsten carbide
• More (e.g. ceramic) materials on request
Additive Manufacturing
Using modern techniques of Additive Manufacturing, the
Fraunhofer-Center HTL develops and fabricates customer-specific
parts and prototypes. In doing so, the HTL does not only pursue
the fast and cost-efficient fabrication of parts, but also the
opening up of novel construction and design principles in the
fabrication of ceramic, metal-ceramic and metal components.
In applying techniques of Additive Manufacturing, it is possible
to create filigree and complex components in one part with only
little effort. Hereby, subject to the printing technique, elaborate
post-processing steps can be minimized or even eliminated
completely. Furthermore, depending on the required space,
multiple and also diverse parts can be fabricated simultaneously.
Thus high expenses for molds can be saved, and development
cycles can be shortened.
At Fraunhofer-Center HTL the spectrum for additively manu-
factured parts reaches from the customer-oriented CAD-based
part design and construction over the fabrication of ceramic,
metal-ceramic and metal components up to part-related analysis
methods. The latter include amongst others computed tomogra-
phy, thermooptical measurement procedures, micrographs and
scanning electron microscopy analysis, as well as mechanical and
thermomechanical testing methods.
Service offer
Reaching from the consultancy in terms of Additive Manu-
facturing and the design of CAD-data, over the realization of
feasibility, design and metallurgical studies and fabrication of
prototypes and small-scale series, up to the characterization and
optimization of parts and processes, the HTL provides a customer-
oriented complete package.
Services summary
• CAD model design and construction
• Fabrication of complex and filigree prototypes and small-
scale series
• Feasibility and metallurgical studies
• Extensive material variety:
o Polymers
o Metals and metal-ceramic
o Porous and dense ceramics
• Extensive part characterization:
o Part geometry and contour accuracy
o Thermal properties and processing
o Mechanical and thermomechanical properties
o Micrographs
For the purpose of Additive Manufacturing two different and
complementary methods are available, which enable the fabrica-
tion of technical ceramics as well as of porous ceramic and dense
metal-ceramic or metal parts. Optionally, demonstrator parts
consisting of polymer can be printed testwise in advance.
Slurry-based fabrication
Technical ceramics components are fabricated with a CeraFab
7500 from Lithoz GmbH. This device generates the parts layer-
wise via stereolithography. In this process, an alumina or zirconia
slurry containing a photo-sensitive binding material is being cured
via radiation in the visible radiation through an irradiation mask.
The green parts being generated on a building platform this way
are subsequently detached, cleaned and debindered and sintered
to the final technical ceramics component.
Powder-based manufacturing
For the fabrication of ceramic, metal-ceramic and metal parts a
powder bed printer M-Flex from ExOne is available. With this de-
vice, the components are being fabricated via layerwise jetting of
binder on a powder bed. The parts are subsequently cured in an
oven and relieved from unwetted powder, which can be recycled
and reused for printing. In a final thermal treatment cycle the
components are debindered and sintered, and can be on demand
infiltrated with metal.