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Powder injection molding of submicron grained translucent alumina

: Mannschatz, A.; Müller-Köhn, A.; Moritz, T.; Klimke, J.; Krell, A.; Michaelis, A.

Ceramic forum international : CFI. Berichte der Deutschen Keramischen Gesellschaft 90 (2013), Nr.8/9, S.E39-E43
ISSN: 0173-9913
Fraunhofer IKTS ()

An injection molding feedstock was developed containing the high purity and highly sinter active alumina powder TM-DAR. The selected binder system allowed a volume loading of 57 vol-%. For minimizing metal contamination during feedstock compounding a shear roller was equipped with wear resistant machine components. The produced alumina samples were sintered to full density maintaining a submicron microstructure. They had a translucent appearance with 36,9 % in-line transmission and 74 % total forward transmission at a wavelength of 640 nm.