Sintering of 3 D ‐Printed Glass/ HA p Composites

We report the sintering of 3 D ‐printed composites of 13‐93 bioactive glass and hydroxyapatite ( HA p) powders. The sintering process is characterized on conventionally produced powder compacts with varying HA p content. A numeric approximation of the densification kinetics is then obtained on the b...

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Published inJournal of the American Ceramic Society Vol. 95; no. 11; pp. 3387 - 3393
Main Authors Winkel, Alexander, Meszaros, Robert, Reinsch, Stefan, Müller, Ralf, Travitzky, Nahum, Fey, Tobias, Greil, Peter, Wondraczek, Lothar
Format Journal Article
LanguageEnglish
Published 01.11.2012
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Summary:We report the sintering of 3 D ‐printed composites of 13‐93 bioactive glass and hydroxyapatite ( HA p) powders. The sintering process is characterized on conventionally produced powder compacts with varying HA p content. A numeric approximation of the densification kinetics is then obtained on the basis of Frenkel, Mackenzie–Shuttleworth, and Einstein–Roscoe models, and optimized sintering conditions for 3 D ‐printed structures are derived. Fully isotropic sintering of complex cellular composites is obtained by continuous heating to 750°C at a rate of 2 K/min for a HA p content of 40 wt%. The approach can readily be generalized for printing and sintering of similar glass‐ceramic composites.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1551-2916.2012.05368.x