Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10624072 | Ceramics International | 2016 | 21 Pages |
Abstract
This study investigated the effects of NaCl additive on the phase composition, pore structure and mechanical property of porous biphasic calcium phosphate (BCP) ceramics, which were prepared by freeze-casting. The results indicated that the addition of NaCl promoted transformation of β-tricalcium phosphate to hydroxyapatite in the BCP ceramics; the OH group in HA phase of BCP ceramic was partially replaced by chloride ion. As the mass fraction of NaCl in the slurry increased from 0 to 3%, the porosity of obtained porous BCP ceramics decreased from 77.76% to 60.22%; the average width of dendritic pores increased from 74.37 µm to 111.27 µm; the compressive strength achieved threefold increase. As the amount of NaCl additive reached 4.5%, the porosity, pore width, and compressive strength of the porous BCP ceramics were comparable with those modified by 3% NaCl. NaCl is regarded as an effective additive to tailor the pore structure and property of freeze-cast porous ceramics.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Fupo He, Yanqiu Yang, Jiandong Ye,