Hydroxyapatite coatings grown by pulsed laser deposition with a beam of 355 nm wavelength

被引：23

作者：

Fernández-Pradas, JM ^{[1
]}

Cléries, L ^{[1
]}

Sardin, G ^{[1
]}

Morenza, JL ^{[1
]}

机构：

[1] Univ Barcelona, Dept Fis Aplicada & Opt, E-08028 Barcelona, Spain

来源：

JOURNAL OF MATERIALS RESEARCH | 1999年 / 14卷 / 12期

关键词：

D O I：

10.1557/JMR.1999.0638

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Calcium phosphate coatings, obtained at different deposition rates by pulsed laser deposition with a Nd:YAG laser beam of 355 nm wavelength, were studied. The deposition rate was changed from 0.01 3 to 1.16 Angstrom/shot by modification of only the ablated area, maintaining the local fluence constant to perform the ablation process in similar local conditions. Characterization of the coatings was performed by scanning electron microscopy, x-ray diffractometry, and infrared, micro-Raman, and x-ray photoelectron spectroscopy. The coatings showed a compact surface morphology formed by glassy grains with some droplets on them. Only hydroxyapatite (HA) and alpha-tricalcium phosphate (alpha-TCP) peaks were found in the x-ray diffractograms. The relative content of alpha-TCP diminished with decreasing deposition rates, and only HA peaks were found for the lowest rate. The origin of alpha-TCP is discussed.

引用

页码：4715 / 4719

页数：5

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