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

DOI: 10.4416/JCST2010-00034

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.

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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://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.

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