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Nanosecond Laser Direct-Part Marking of Data Matrix Symbols on Titanium Alloy Substrates

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Abstract:

In the application of laser marking, the biggest challenge is that machine-readable barcodes with superior quality were not marked consistently. To solve this problem, laser direct-part marking Data Matrix barcode experiments were carried out on titanium alloy substrates, using a Q-switched light-pumped Nd:YAG laser. The microstructure of the symbols was analyzed using an environmental scanning electron microscope (ESEM). The internal micro-stresses of the marked areas were analyzed using X-ray diffractometer (XRD). The influence of the pulse frequency on the symbol contrast is analyzed. Results showed the interaction between the laser and the titanium alloy can be found. This can further explain the physical mechanism of laser direct part marking Data Matrix symbols on titanium alloy substrates.

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Periodical:

Key Engineering Materials (Volume 764)

Pages:

194-200

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.764.194

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Online since:

February 2018

Authors:

Chun Ling Li*, Chang Hou Lu, Jian Mei Li

Keywords:

Data Matrix Symbol, Laser Marking, Nd:YAG Laser, Titanium Alloy

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© 2018 Trans Tech Publications Ltd. All Rights Reserved

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