Carbonate Hydroxyapatite and Silicon-Substituted Carbonate Hydroxyapatite: Synthesis, Mechanical Properties, and Solubility Evaluations

Table 1

Physical and chemical properties of the as-synthesized CO₃Ap and Si-CO₃Ap samples.

Sample	Si content (wt%)		Ca/P		Mean particle size (𝜇m)
	Starting value	Measured value (ICP/in powder)	Starting value	Measured value (XRF)
CO3Ap	0	—	1.67	2.08	2.52
Si-CO3Ap	1.6	0.85	1.84	2.16	0.98