MICROSTRUCTURAL CHARACTERISTIC OF NANO CALCIUM PHOSPHATES DOPED WITH FLUORIDE AND TITANIUM IONS

Date

2013-10-31

Author

Gungor, Serap
Evis, Zafer

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Calcium phosphates (CaP) are frequently used in medical applications due to their high biocompatibility in the human body. In this study, nano-sized CaPs (with Ca/P molar ratios of 1, 1.25, 1.5, 1.67, and 2) doped with titanium (Ti4+) and fluoride (F-) ions were synthesized by a precipitation method and sintered at 1300 degrees C for 1h. These bioceramics were characterized by XRD, FTIR, SEM and micro-hardness. It was observed that high amount of Ti4+ led to a decrease in densification when Ca/P ratio was 1.50 and 2.0 at 1300 degrees C. Densities of the F- addition revealed considerable decreases at 1300 degrees C. According to the SEM results, the average grain sizes of the doped and undoped samples decreased when Ca/P ratio increased. As a result of Vickers microhardness test, Ti4+ ion addition in large amounts decreased the mu-hardness of the samples at 1300 degrees C, except samples with molar ratio of 1.0 and 2.0 at 1300 degrees C.

Subject Keywords

Tetracalcium Phosphate, Ceramics, Hydroxyapatite, Pyrophosphate, Bioceramics, Kinds

URI

https://hdl.handle.net/11511/55620

Collections

Department of Engineering Sciences, Conference / Seminar