LIBS Info: Element Analysis
| Title | Authors | Material | Detector | Spectrometer | Software |
|---|---|---|---|---|---|
| Analysis of powdered tungsten carbide hard-metal precursors and cemented compact tungsten carbides using laser-induced breakdown spectroscopy | K. Novotny, A. Stankova, H. Hakkanene, J. Korppi-Tommola, V. Otruba, V. Kanicky | Tungsten Carbide | DiCAM-Pro-12 | Mechelle 7500 | |
| Laser: | ArF Excimer 193.0000nm 1.2500mJ NoneHz |
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| Gate Delay: | Noneus | ||||
| Gate Width: | Noneus | ||||
| The researchers use several laser systems (Nd:YAG @ 1064nm and 266nm) and detection systems to investigate the LIBS analysis of Tungsten Carbide samples. Different analysis atmospheres (Air, Ar and He) are also tested. | |||||
| Element | Detection Limit (ppm) | Wavelength (nm) | Other Wavelengths (nm) | Calibration Method | Calibration Range (ppm) | Notes |
|---|---|---|---|---|---|---|
| Nb | 1000.0000 (Lowest Determinable Quantity) | 405.8930 | N/A | Univariate | 200.0000-32100.0000 | Depending on laser (Nd:YAG @ 1064nm or 266nm) and atmosphere (Air or Argon) LDQ in range 1000-8000ppm determined. Calibration curve is strongly self-absorbed about 3% |
| Ti | 6000.0000 (Lowest Determinable Quantity) | 361.0300 | N/A | Univariate | 400.0000-63700.0000 | Best result used cemented samples. |
| Ta | 13000.0000 (Lowest Determinable Quantity) | 648.5300 | N/A | Univariate | 1200.0000-82300.0000 | Self absorption would hamper the used of this peak about ~1-2% Ta |
| Co | 40000.0000 (Lowest Determinable Quantity) | 350.2300 | N/A | Univariate | 36700.0000-12900.0000 | The authors had considerable trouble obtaining any calibration curves for this element. r^2 was 0.7999 for Co vs >0.96 for other elements studied |
| Element | RMSE (ppm) | Wavelength (nm) | Calibration Method | Notes |
|---|