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Shaping of ceramic parts by selective laser melting of powder bed

Published online by Cambridge University Press:  07 July 2014

Enrique Juste ,
Fabrice Petit ,
Véronique Lardot  and
Francis Cambier
Enrique Juste*
Affiliation:
Belgian Ceramic Research Center – Member of EMRA, Mons 7000, Belgium
Fabrice Petit
Affiliation:
Belgian Ceramic Research Center – Member of EMRA, Mons 7000, Belgium
Véronique Lardot
Affiliation:
Belgian Ceramic Research Center – Member of EMRA, Mons 7000, Belgium
Francis Cambier
Affiliation:
Belgian Ceramic Research Center – Member of EMRA, Mons 7000, Belgium
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Laser additive manufacturing allows the production of polymeric or metallic parts with complex shapes. A major advantage of this contactless technology is that it allows reaching very high energy densities with an excellent precision in short times. This is very suitable for processing hard refractory metals for instance. Unfortunately, current results are less satisfactory for ceramics as a consequence of their intrinsic properties such as a low thermal shock resistance and very high refractoriness. Another significant limitation is related to the poor absorptivity of oxide ceramics in the near-infrared region which is typical for most commercial selective laser melting (SLM) machines. This study considers an alternative to overcome the above-mentioned limitations, especially the lack of absorptivity. SLM of oxide ceramics has become possible. Large parts with complex shapes and relative densities up to 90% have been manufactured on a commercial SLM machine.

Keywords

ceramiclasersintering
Type
Invited Papers
Information
Journal of Materials Research , Volume 29 , Issue 17: Focus Issue: The Materials Science of Additive Manufacturing , 14 September 2014 , pp. 2086 - 2094
Copyright
Copyright © Materials Research Society 2014 

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References

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