Surface Modification of Titanium by High Intensity Ultra-Short Nd:YAG Laser

The effects of an Nd:YAG laser interaction with titanium target using laser radiation at wavelengths 1.064 or 0.532 μm (40 picoseconds pulse duration) were studied. Modification of target surfaces at laser energy densities of 2.4 and 10.3 J/cm2 (λ1 laser= 1.064 μm) and 1.1 J/cm2 (λ2 laser= 0.532 μm) are reported in this article. Qualitatively, the titanium surface modification can be summarized as follows: (i) ablation of the titanium surface in the central zone of the irradiated area for both laser wavelengths; (ii) appearance of a hydrodynamic feature like resolidified droplets of the material (λ1 laser= 1.064 μm), as well as formation of the wave-like microstructures (λ2 laser= 0.532 μm); and (iii) appearance of plasma, in front of the target, with both laser wavelengths.

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Surface Modification of Titanium by Hydrothermal Treatment

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.361-363.609 ◽

2007 ◽

Vol 361-363 ◽

pp. 609-612 ◽

Cited By ~ 4

Author(s):

Akiko Obata ◽

Toshihiro Kasuga

Keyword(s):

Mechanical Properties ◽

Surface Modification ◽

Hydrothermal Treatment ◽

Alkaline Solution ◽

Bone Substitute ◽

Titanium Surface ◽

Anatase Phase ◽

Axis Orientation ◽

Mouse Osteoblast ◽

Modification Of Titanium

Titanium is well known as an implant material having excellent biocompatibility and mechanical properties for use in bone substitute. In the present study, to enhance the biocompatibility of titanium, its surface was modified by hydrothermal treatment using dilute alkaline solution. After hydrothermal treatment, anatase predominantly formed on a titanium surface. The anatase phase showed high crystallinity and c-axis orientation. The anatase layers with leaf-like and pyramid-like forms were observed on titanium autoclaved at 120 °C and 240 °C, respectively. The anatase formation and its morphology were significantly related to the autoclaving temperature. To estimate the cellular compatibility of the autoclaved titanium, mouse osteoblast-like cells (MC3T3-E1 cells) were cultured on the autoclaved titanium surface. After 7- days culturing, the number of the cells harvested from the autoclaved titanium was higher than that from untreated titanium. The surface modification of titanium by hydrothermal treatment involved the proliferation of the cells on its surface.

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Calcium Titanate Film-Coating on Titanium with Hydrothermal Treatments

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.330-332.737 ◽

2007 ◽

Vol 330-332 ◽

pp. 737-740 ◽

Cited By ~ 2

Author(s):

Masayuki Kon ◽

Razia Sultana ◽

Emi Fujihara ◽

Kenzo Asaoka ◽

Tetsuo Ichikawa

Keyword(s):

High Pressure ◽

Surface Modification ◽

Simulated Body Fluid ◽

Body Fluid ◽

Titanium Surface ◽

Film Coating ◽

Calcium Titanate ◽

Maximal Pressure ◽

Titanium Surfaces ◽

Modification Of Titanium

Film-coating on the surface of titanium was investigated by hydrothermal treatments with a maximal pressure of 6.3 MPa (280°C) in CaO solution and water to improve bioactivity and biocompatibility. As a result, calcium titanate (CaTiO3) film was formed on the titanium surface. The surface-coated titanium was immersed in a simulated body fluid (SBF) to estimate its bioactivity. Apatite precipitation was observed on all hydrothermal-treated titanium surfaces after immersion in SBF for 4 weeks. In particular, the apatite precipitation of titanium treated with 6.3 MPa in CaO solution was clearer and larger in amount than those of all other hydrothermal-treated specimens. The results suggest that surface modification of titanium with high-pressure hydrothermal treatments can be expected to improve bioactivity and biocompatibility.

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Surface modification of titanium by pulsed laser radiation of femtosecond duration

Inorganic Materials Applied Research ◽

10.1134/s2075113311030105 ◽

2011 ◽

Vol 2 (3) ◽

pp. 206-209 ◽

Cited By ~ 1

Author(s):

E. V. Golosov ◽

V. I. Emel’yanov ◽

A. A. Ionin ◽

Yu. R. Kolobov ◽

S. I. Kudryashov ◽

...

Keyword(s):

Surface Modification ◽

Laser Radiation ◽

Pulsed Laser ◽

Pulsed Laser Radiation ◽

Modification Of Titanium

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Structural Characterization and Surface Modification of Titanium Plates After Nd:YAG Laser Treatment

Portugaliae Electrochimica Acta ◽

10.4152/pea.202004215 ◽

2020 ◽

Vol 38 (4) ◽

pp. 215-228

Author(s):

A Bahloul ◽

M C Sahour ◽

R Oumeddour ◽

G Pillon

Keyword(s):

Surface Modification ◽

Laser Treatment ◽

Structural Characterization ◽

Nd:Yag Laser ◽

Modification Of Titanium

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Surface Modification of Titanium with Hydrothermal Treatment

Materials Science Forum ◽

10.4028/www.scientific.net/msf.561-565.1521 ◽

2007 ◽

Vol 561-565 ◽

pp. 1521-1524

Author(s):

Akiko Obata ◽

Toshihiro Kasuga

Keyword(s):

Surface Modification ◽

Hydrothermal Treatment ◽

Titanium Surface ◽

Deionized Water ◽

Laser Raman Spectroscopy ◽

Titanium Plate ◽

Laser Raman ◽

Naoh Solution ◽

Titanium Surfaces ◽

Modification Of Titanium

Hydrothermal treatment was performed on a titanium plate for its surface modification to enhance its bioactivity. The titanium plate was autoclaved in deionized water (DW) or 0.05 mol/l NaOH solution at 120, 200 and 240 °C for 24 hr. The titanium surfaces autoclaved in DW were homogeneously coated with nano-sized particles and polygonal deposits with the sizes of several hundreds nanometers. The deposits were regarded as anatase according to the results of laser Raman spectroscopy (LRS). In the case of autoclaving in 0.05 mol/l NaOH solution, leaf-like, needle-like and pyramid deposits were observed on titanium surfaces and regarded to consist of anatase or brookite by LRS analysis. The formation of the deposits significantly depended on the autoclaving temperature. The deposits adhered on the titanium surface though a tape-test; the adhesion of the particle was found to be excellent.

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