Titanium alloy nanosecond vs. femtosecond laser marking

► We analyze nanosecond (commercial) and femtosecond laser marks, using SEM and EDAX. ► Elevated repetitive thermal gradients leads to structural defects for double crosses. ► Femtolaser engraving forms amorphous structures, composed of spherical particles. ► We conduct X-ray diffractometry to detec...

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Bibliographic Details
Published in:Applied surface science 2012-10, Vol.259, p.311-319
Main Authors: Rusu, Stefan, Buzaianu, Aurelian, Ionel, Laura, Ursescu, Daniel, Galusca, Dan Gelu
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Condensed matter: structure, mechanical and thermal properties
Consumer goods
Cross-disciplinary physics: materials science
rheology
Diffraction
Exact sciences and technology
Femtosecond
Laser
Lasers
Marking
Nanosecond
Nanostructure
Physics
Titanium
Titanium base alloys
X-rays
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Summary:► We analyze nanosecond (commercial) and femtosecond laser marks, using SEM and EDAX. ► Elevated repetitive thermal gradients leads to structural defects for double crosses. ► Femtolaser engraving forms amorphous structures, composed of spherical particles. ► We conduct X-ray diffractometry to detect internal micro and residual stresses. ► No internal stresses modification occurred for nano and femtosecond laser marking. There are few papers which aim to analyze the effects of laser marking for traceability on various materials; therefore, the present paper proposes a study of the influences of such radiation processing on a titanium alloy, a vastly used material base within several industry fields. For the novelty impact, femtolaser marking has been carried out, besides the commercial nanosecond standard engraving. All marks have been analyzed using scanning electron microscopy, energy dispersive X-ray spectroscopy and X-ray diffractometry.
ISSN:0169-4332
1873-5584
DOI:10.1016/j.apsusc.2012.07.039