A facile route for hydroxyapatite densification with an increased heating rate

Lukic, Miodrag J. and Sezen, Meltem and Veljovic, Dorde and Mrakovic, Ana (2017) A facile route for hydroxyapatite densification with an increased heating rate. Materials Letters, 207 . pp. 12-15. ISSN 0167-577X (Print) 1873-4979 (Online)

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Official URL: http://dx.doi.org/10.1016/j.matlet.2017.07.020


The densification behavior of hydroxyapatite nanorods prepared by chemical precipitation method in open reactor conditions was investigated by application of different heating rates. The non-isothermal processing was performed with 2, 10, and 50 degrees C/min up to 1200 degrees C and yielded fully dense ceramics. The implementation of the higher heating rate provided grain size refinement from micrometer level for the slowest ramp, down to 250 nm in the case of processing with 50 degrees C/min, without any drawbacks regarding final density. The relative amount of retained structural hydroxyl groups in sintered ceramics was gradually increased with the heating rate. Furthermore, the qualitative level of optical translucency was increased with a higher heating rate which can be explained by the beneficial alignment of HAp nanorods during the fast heating rate processing, achieved microstructural refinement, and higher amount of structural hydroxyl groups.

Item Type:Article
Subjects:T Technology > TN Mining engineering. Metallurgy > TN799.5-948 Nonmetallic minerals
T Technology > TP Chemical technology > TP0155-156 Chemical engineering
T Technology > TP Chemical technology > TP0785-869 Clay industries. Ceramics. Glass
T Technology > T Technology (General) > T174.7 Nanotechnology
ID Code:32930
Deposited By:Meltem Sezen
Deposited On:10 Sep 2017 16:18
Last Modified:22 May 2019 13:54

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