Elemental quantitative distribution and statistical analysis on cross section of stainless steel sheet by laser ablation inductively coupled plasma mass spectrometry

摘要: Abstract An innovative application of laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) technique in illustrating elemental distributions on stainless steel sheets was presented. The proved to be a systematic and accurate approach producing visual images or maps at cross-sectional surface sheet. Two served as research objects: 3 mm×1 300 mm hot-rolled plate 1 260 cold-rolled plate. surfaces the two samples 1/4 position along width direction were scanned (raster area −44 2 11 ) with focused beam (wavelength 213 nm, diameter crater 100 μm, power 1.6 mJ) chamber. system quadrupole ICP-MS, which made detection ion intensities 27 Al + , 44 Ca 47 Ti 55 Mn 56 Fe within an interest possible. One-dimensional (1D) content line distribution two-dimensional (2D) contour for specific positions areas plotted indicate element target high accuracy. Statistic method used analyze acquired data by calculating median contents, maximum segregation, statistic segregation content-frequency distribution.