Xue-jing SHEN, Fei-fei GUO, Peng XU, Fei-peng CUI, Xiao-peng LI, Jia LIU. Original Position Statistic Distribution Analysis (OPA) and Characterization of Components in Titanium Alloy Welding Sample by Laser Induced Breakdown Spectroscopy (LIBS)[J]. Spectroscopy and Spectral Analysis, 2021, 41(12): 3869
- Spectroscopy and Spectral Analysis
- Vol. 41, Issue 12, 3869 (2021)
Fig. 1. Schematic diagram of LIBSOPA system
Fig. 2. Schematic diagram of the sample
Fig. 3. Relationship between spot size and spectral signal intensity
Fig. 4. Relationship between spot size and spectral signal stability
Fig. 5. Relationship between ablation pulses and spectral signal intensity
Fig. 6. Relationship between ablation pulses and spectral signal stability
Fig. 7. Calibration curve
Fig. 8. Actual sample and scanning mode
Fig. 9. Two-dimensional component distribution map of carbon-LIBSOPA
Fig. 10. Schematic diagram of sampling for HF-IR absorption method
Fig. 11. Comparison of the carbon concent in different regions with two test methods
Fig. 12. Two-dimensional component distribution maps-LIBSOPA
Fig. 13. Two-dimensional component distribution maps-microbeam X-ray fluorescence spectrometry
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Table 1. Reference material composition
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Table 2. Content range and statistical segregation degree of each element(%)
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