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Proceedings Paper

Cohesive or adhesive hydroxylapatite layers deposited by ArF laser ablation
Author(s): Waldemar Mroz
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Paper Abstract

The article presents the results of macroscopic examination of adhesion of hydroxyapatite layers deposited by the PLD method on nitrided substrates made of Ti-Al-4V alloy. The layers were deposited by means of the ArF laser, in vacuum at p ~ 3 x 10-5 Torr, after deposition layers were annealing during the period of 90 minutes, at the temperature of 600°C. The research of the deposited layer topography and the topography of tested layers were carried out by means of the atomic force microscope. The comparative examination showed that the mechanical resistance of the deposited layers depends not on their adhesion to the substrate, but on the cohesion of the deposited material. The most damage-resistant layers proved to have the thickness of the order of several hundred nanometers, as they are still influenced by the forces of adhesion to the substrate. The plasticity characteristic for such layers is similar to the plasticity of the substrate. The deposited layers, both amorphous and polycrystalline were characterized by columnar structure.

Paper Details

Date Published: 8 October 2004
PDF: 6 pages
Proc. SPIE 5662, Fifth International Symposium on Laser Precision Microfabrication, (8 October 2004); doi: 10.1117/12.596347
Show Author Affiliations
Waldemar Mroz, Military Univ. of Technology (Poland)

Published in SPIE Proceedings Vol. 5662:
Fifth International Symposium on Laser Precision Microfabrication
Isamu Miyamoto; Henry Helvajian; Kazuyoshi Itoh; Kojiro F. Kobayashi; Andreas Ostendorf; Koji Sugioka, Editor(s)

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