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Coating Characteristic of Hydroxyapatite on Titanium Substrates via Hydrothermal Treatment
| Content Provider | MDPI |
|---|---|
| Author | Kien, Pham Trung Quan, Tran Ngo Anh, Le Huynh Tuyet |
| Copyright Year | 2021 |
| Description | Medical pure titanium (Ti) shows excellent chemical stability and mechanical properties in clinical uses, but its initial fixation with host bone, when implanted, is usually delayed owing to the bioinert Ti surface. In this study, we fabricate the hydroxyapatite (HA)-coated titanium by three steps reactions: (1) to form an activated $O^{2−}$ layer by immersing Ti substrate into an alkaline solution such as NaOH; (2) the $O^{2−}$ bonds with $Ca^{2+}$ to form Ca–O–Ti bonding, in which O plays the part of bridge materials between Ca and Ti substrate and (3) the conversion of Ca–O–Ti samples to HA-coated Ti samples by immersion into $Na_{2}HPO_{4}$ 2 M at 180 °C for 48 h using hydrothermal methods. The effect of different phosphate solutions $(NaH_{2}PO_{4}$ 2 M and $Na_{2}HPO_{4}$ 2 M solution) and hydrothermal treatment time (24 and 48 h) on the characteristic of hydroxyapatite coating titanium substrate is also investigated using the optical microscope, thin film XRD and SEM/EDX. The HA-coated Ti samples fabricated by immersion into $Na_{2}HPO_{4}$ 2 M at 180 °C for 48 h show fiber HA covering Titan substrate with a diameter varying from 0.1 to 0.3 µm. These HA-coated Ti samples can be regarded as promising multifunctional biomaterials. |
| Starting Page | 1226 |
| e-ISSN | 20796412 |
| DOI | 10.3390/coatings11101226 |
| Journal | Coatings |
| Issue Number | 10 |
| Volume Number | 11 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-10-09 |
| Access Restriction | Open |
| Subject Keyword | Coatings Manufacturing Engineering Hydroxyapatite Coating Titanium Hydrothermal Treatment Bone Implant |
| Content Type | Text |
| Resource Type | Article |
