Parascholzite Coatings on Niobium Substrates

This study proposes a hydrothermal process to produce monetite and zinc-doped calcium phosphate coatings with different (Ca+Zn)/P molar ratios, in an attempt to incorporate zinc benefits on bone formation to hydroxyapatite precursors. The method consists of coating niobium and titanium substrates in an aqueous solution rich in (PO4)3-and calcium (Ca)2+ions under specific conditions (pH ≡ 3.7, 80°C). Scanning electron microscopy (SEM) and X-ray diffraction (XRD) analyses were performed to characterize the coatings. From XRD analysis, we concluded that substitution of Ca by Zn was feasible up to 15% mol Zn, and the new phase obtained was parascholzite (JCPDS-01-086-2372).