fused filament fabrication (fff) of pim feedstocks · fused filament fabrication (fff) of pim...

Otto Glöckel-Straße 2, A-8700 Leoben, Tel.: +43 3842 402 3501

kv@unileoben.ac.at

www.kunststofftechnik.at

08.06.2017

Santiago Cano

FUSED FILAMENT FABRICATION (FFF) OF PIM FEEDSTOCKS

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Content

Motivation

FFF of feedstocks

Requisites and challenges

Experimental procedure

Results and discussion

Conclusions

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Motivation

Additive manufacturing

o Metals: laser or electron beam

o Ceramics: UV technology, robocasting

Fused Filament Fabrication (FFF)

+ Combination of metals and ceramics (PIM powders)

+ Lower investment

Source: Eos GmbH Source: Arcam AB Source: Lithoz GmbH

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FFF of feedstocks

Raw material Feedstock

Shaping-Debinding-Sintering (SDS)

Shaping by FFF

Debinding Sintering

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FFF of feedstocks

Mixing Filament extrusion

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FFF of feedstocks

Shaping Debinding Sintering

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Requirements and challenges: FFF

Mechanical resistance

Low viscosity

Adhesion

Hardness

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Requisites and challenges: filaments

o Constant diameter and shape

o Flexibility to be spooled

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Requirements and challenges:Solvent debinding

Backbone • Insoluble • Shape preservation

Base binders • Soluble • Low swelling

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Experimental procedure

Filament characterization:

Diameter and shape Laser measurement

Mechanical properties Tensile tests

Solvent debinding Compression molded parts

Morphology SEM

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Materials

Binder: Polyolefin + Compatibilizer + TPE

Powders

0

5

10

15

20

25

30

316 L Ti6Al4V NdFeB SrFe12O19 YSZ

D5

0 (

µm

)

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Results: Mechanical properties

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Results: Solvent debinding

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Conclusions

It is possible to process feedstocks by FFF

Powder geometry has a strong influence on the filament properties

The debinding rate and defects in solvent debinding are greatly influenced by powder geometry

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Research performed under the projects REProMag and CerAMfacturing with the financial support of the European Commission in the frame of the FoF Horizon 2020 with financial agreements 636881 y 678503.

Acknowledgements

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Thank you very much for your attention

FUSED FILAMENT FABRICATION (FFF) OF PIM FEEDSTOCKS

Christian Kukla, Joamin Gonzalez-Gutierrez, Santiago Cano, Stefan Hampel, Carlo Burkhardt, Tassilo Moritz, Clemens Holzer

Santiago Cano Cano

Email: santiago.cano-cano@unileoben.ac.at