Influence of Aggregated Powder Structures on Sintering Behaviour of Multilayer Hydroxyapatite Laminates
Hahn E, Hum J, Will J, Zuo K, Jiang D, Greil P (2011)
Publication Status: Published
Publication Type: Journal article
Publication year: 2011
Journal
Publisher: Goeller Verlag GmbH
Book Volume: 2
Pages Range: 61-68
Journal Issue: 1
Abstract
Aqueous tape-cast slurries of hydroxyapatite with a solid loading of 32 vol% were prepared from various fractions of aggregated (mean particle size 4.7-5.6 mu m) and dispersed powder (mean particle size 0.17-0.29 mu m). Multilayer laminates were prepared and the shrinkage and density of the laminates sintered at 1250 degrees C were measured. While fractional density in the green laminates remains almost constant at 0.52, a pronounced increase in fractional sintered density from 0.96 to >0.99 was observed with decreasing fraction of aggregated powder. Residual pore size and pore number density were reduced from 0.58 mu m to 0.48 mu m and 0.049 pores/mu m(2) to 0.019 pores/mu m(2), respectively. The multilayer laminates attained a mean bending strength of 118 +/- 10 MPa measured with the bi-axial bending test. An osteosynthesis plate design was fabricated for demonstration of the potential of sintered multilayer laminates.
Authors with CRIS profile
Jasmin Hum
Lehrstuhl für Werkstoffwissenschaften (Biomaterialien)
Julia Will
Lehrstuhl für Werkstoffwissenschaften (Biomaterialien)
Peter Greil
Lehrstuhl für Glas und Keramik
Involved external institutions
China (CN)How to cite
APA:
Hahn, E., Hum, J., Will, J., Zuo, K., Jiang, D., & Greil, P. (2011). Influence of Aggregated Powder Structures on Sintering Behaviour of Multilayer Hydroxyapatite Laminates. Journal of Ceramic Science and Technology, 2(1), 61-68. https://dx.doi.org/10.4416/JCST2010-00034
MLA:
Hahn, E., et al. "Influence of Aggregated Powder Structures on Sintering Behaviour of Multilayer Hydroxyapatite Laminates." Journal of Ceramic Science and Technology 2.1 (2011): 61-68.
BibTeX: Download