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Sintering of 3 D ‐Printed Glass/ HA p Composites
Author(s) -
Winkel Alexander,
Meszaros Robert,
Reinsch Stefan,
Müller Ralf,
Travitzky Nahum,
Fey Tobias,
Greil Peter,
Wondraczek Lothar
Publication year - 2012
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2012.05368.x
Subject(s) - sintering , materials science , composite material , ceramic , kinetics , isotropy , physics , quantum mechanics
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.