NGHIÊN CỨU CẢI THIỆN QUY TRÌNH CHẾ TẠO LỚP PHỦ Ca-P TRÊN BỀ MẶT KIM LOẠI TITAN

Tóm tắt

A Ca-P coating can be formed on the surface of titanium metal by immersing the metal in a simulated
biofluid (SBF) for an extended period, usually around 28 days. In this work, we try to reduce the
forming time of Ca-P coating layer by adjusting the concentration of substances in the SBF solution,
and changing the impregnation technology by the technique of dipping and drying. The morphology
and elemental composition of the metal surface after the modified treatment were compared with the
original metal surface to evaluate the Ca-P coating layer formation level. Using the coating and
heating technique with the modified SBF solution with a repeated cycle of 3 hours / 1 cycle (performed
5 times), the Ca / P ratio obtained on the metal surface is 2.24 according to the Energy-dispersive Xray spectroscopy (EDX) method, and a Hydroxyapatite phase was detected by (X-ray diffraction) XRD
diagram. In addition, the scanning electron microscope (SEM) analysis results have provided clearer
information about the surface morphology of the primary samples and the samples after forming a CaP coating layer in SBF solution by the improved procedures.