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For process control in the steel-making process, various kinds of analytical values need be fed back to the production site precisely and rapidly. Non-metallic inclusion particles embedded in the iron matrix, such as alumina, should especially be noticed in steel analysis, because they generally reduce the fatigue strength of structural steels and sometimes leave any scratches and creases on the surface of the final product.1,2) Therefore, we concern an analytical method to obtain the inhomogeneous and spatial distribution of them in the metallurgical structure of steels, and further to apply it to the on-site/in-line analysis.3) Conventional analytical methods for estimating such a distribution are based on the structural/chemical observation by using an optical microscope, a scanning electron microscope equipped with an X-ray detector, or various X-ray and electron spectroscopies.4,5) A major disadvantage of these methods is that time-consuming and complicated procedures have to be required for the measurement; therefore, it is difficult to apply them to an on-site/in-line analysis in the actual Optimization of Measuring Parameters for Two-dimensional Elemental Mapping in Laser-induced Breakdown Optical Emission Spectrometry Using 1-kHz Q-switched Nd:YAG Laser

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Optimization of Measuring Parameters for Two-dimensional Elemental Mapping in Laser-induced Breakdown Optical Emission Spectrometry Using 1-kHz Q-switched Nd:YAG Laser