Fabrication of Porous Titania and Porous Calcium Phosphate Coatings on Titanium Surface
A network-like porous layer on titanium was prepared by acid-etching with a mixture of CaCl2 and HCl. The pores ranged from 1 to 10!m. The small pores distributed in big pores. In the simulated biological environment, porous octacalcium phosphate (OCP) coatings spontaneously formed on the porous- surfaced titanium. Pre-calcification after acid-etching accelerated OCP precipitation. The OCP coatings had big pores of about 25!m and small pores of 1~3!m, the latter distributed in the former at different depth.
Xingdong Zhang, Xudong Li, Hongsong Fan, Xuanyong Liu
B. Feng et al., "Fabrication of Porous Titania and Porous Calcium Phosphate Coatings on Titanium Surface", Key Engineering Materials, Vols. 330-332, pp. 529-532, 2007