Determining Elemental Concentrations of Nickel-Doped Iron Samples through the Method of Laser Induced Breakdown Spectroscopy
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Accurate information about the composition and concentration of the elements comprising a material is oftentimes of the utmost importance. Laser induced breakdown spectroscopy (LIBS) is a method for determining compositional information of materials with minimal to no sample preparation and with limited destructiveness. In this work, an optical path configuration for achieving ablation that is suitable for both LIBS and micro LIBS is constructed. Using the optical path, LIBS spectra are taken for a series of iron samples with progressively reduced nickel-dopant concentrations in the range of 10% down to 0%. Subsequently, a spectral data analysis process is defined to enable the production of calibration curves for nickel concentrations in doped samples of iron that may be extended beyond the range studied here. The experimental setup, data acquisition, and data analysis processes in this thesis are immediately generalizable to a range of metal alloys with varying numbers of elements and relative concentrations.
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Introduction -- Research methods -- Results and discussion -- Conclusion
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M.S.