High-quality hydroxyapatite coating on biocompatible materials by laser-assisted laser ablation method
| Autor: | H. Katayama, T. Tanaka, M. Katto, Y. Tsumoto, Takeyoshi Nakayama |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Laser ablation
Materials science business.industry Scanning electron microscope Simulated body fluid General Chemistry engineering.material Laser law.invention Pulsed laser deposition Amorphous solid Crystallinity Optics stomatognathic system Coating law engineering General Materials Science Composite material business |
| Zdroj: | Applied Physics A. 79:833-836 |
| ISSN: | 1432-0630 0947-8396 |
| Popis: | A new method for high-quality hydroxyapatite (HAp) coating is developed, the laser-assisted laser ablation method. In this method, two lasers are used. One is used for ablation of a HAp target. The other, the assist laser, is used to irradiate a Ti substrate surface. The effects of the assist laser irradiation are to anneal the HAp coating and to improve its adhesive strength to the Ti substrate. The quality of the HAp coating depends on the delay time of the assist-laser irradiation. HAp coatings obtained at a delay time of 10 microseconds or more are more amorphous. It was confirmed that the amorphous part of a coating dissolves in simulated body fluid, while the crystalline part does not. The value of the Ca/P ratio in a coating obtained at a delay time of a few microseconds is close to the stoichiometric value. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|