High-throughput microanalysis of steel segregation using picosecond laser-induced breakdown spectroscopy
Shoujie Li1, Zixiong Qin2, Yuan Lu3
1School of Rehabilitation Sciences and Engineering, University of Health and Rehabilitation Sciences, Qingdao, 266113, PR China; Graduate School of Advanced Technology and Science, Tokushima University, Tokushima, 770-8501, Japan; Faculty of Information Science and Engineering, Ocean University of China, Qingdao, 266100, PR China.
Ultrafast laser-induced breakdown spectroscopy (LIBS) enables high-throughput steel segregation analysis with micrometer resolution. This method offers a reliable alternative for elemental microanalysis in steel quality control.
Area of Science:
- Materials Science
- Analytical Chemistry
- Spectroscopy
Background:
- Segregation monitoring is critical for steel quality control.
- Laser-induced breakdown spectroscopy (LIBS) is a diagnostic tool for elemental microanalysis.
Purpose of the Study:
- To develop an ultrafast LIBS system for high-throughput steel segregation analysis.
- To achieve high spatial resolution (1 μm) elemental imaging of steel samples.
Main Methods:
- Construction of an ultrafast LIBS system utilizing a 1.2 kHz repetition-rate picosecond laser.
- Performing large-scale elemental imaging over a 1 cm² area with 100 million pixels.
Main Results:
- Achieved high-throughput analysis of steel segregation with a spatial resolution of 1 μm.
- Completed large-scale elemental imaging (1 cm²) in 25.27 hours.
- Demonstrated excellent agreement between LIBS mapping and Electron Probe Microanalysis (EPMA) results.
Conclusions:
- The developed ultrafast LIBS system provides reliable and high-resolution elemental microanalysis for steel segregation.
- LIBS shows potential as a viable alternative to traditional methods like EPMA for steel analysis.
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