Fluoride ion-promoted reaction of β-tricalcium phosphate to fluoridated hydroxyapatite

Study of fluorhydroxyapatite coatings on carbon/carbon composites

“…Fig. 1(B) reveals that after fluoridizing treatment, the diffraction peak of tricalcium phosphate was decreased, which indicates that this treatment can accelerate the transformation of tricalcium phosphate into fluorhydroxyapatite [16]. .…”

“…Either excessive amount of fluorine or lack of it will bring about pathological changes [15,16]. Therefore, this coating can be used for further research on implants to study their biological characteristics.…”

Retention of fluoride ions from aqueous solution using porous hydroxyapatiteStructure and conduction properties

“…The suspension was aged for 12 h, filtered and dried at 100 • C overnight. Crystalline calcium hydroxyapatite Ca 10 (PO 4 ) 6 (OH) 2 (c-HAp) was prepared by a diluted decomposition method between (NH 4 ) 2 HPO 4 80 • C. The pH value was adjusted to 10 with ammonium hydroxide. The powders were filtered and washed with distilled water and dried overnight at room temperature.…”

“…Fluoridated calcium hydroxyapatites have been studied in relation to their physicochemical properties [1][2][3][4][5][6]. It is well known that fluoride is one of the elements contained in biological apatites as trace amounts, which strongly modifies their crystallinity and their solubility.…”

Simultaneous incorporation of magnesium and fluorine ions in hydroxyapatite coatings on Ti6Al4V implant.

“…The Ca/P ratio is 1.5, lower than that of pure HA (1.67), thus the formation of β-TCP is preferred as its Ca/P ratio is 1.5, especially with the presence of Mg ions [75,139]. Moreover, the conversion of β-TCP to the apatite can be promoted by the presence of F ions with the increasing F amount and reaction temperature [161], thus it is reasonable that the formation of FHA phase is preferred. As seen in Figure 4-23,…”