Nanosecond laser direct-part marking of data matrix symbols on titanium alloy substrates

6th International Conference on Nanomaterials and Materials Engineering

Li, C.L.^1

College of Mechanical and Automotive Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, Shandong

250353, China^1

关键词: Application of laser;    Data matrix symbols;    Direct-part marking;    Environmental scanning electron microscopes;    Nanosecond lasers;    Physical mechanism;    Pulse frequencies;    X ray diffractometers;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/380/1/012022/pdf
DOI  :  10.1088/1757-899X/380/1/012022

来源: IOP

【 摘 要 】

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.