Analytical method of small-size impurities in steel

摘要: The invention discloses an analytical method of small-size impurities in steel. technical scheme adopted by the comprises steps of: (1) electrolyzing a sample neutral organic electrolyte under constant current and voltage; (2) filtering solution rich large amount impurity particles after electrolysis filter membrane with superfine aperture so as to settle on membrane; (3) taking off membrane, bonding supporting table putting scanning electron microscope for observation, morphology photos analyzing energy spectrum components; (4) processing data, conducting three-dimensional statistic analysis all or specified type impurities. steel solves problems that extraction bulk is not applicable traditional impurities, cannot be displayed completely two-dimensional polishing surface, components interfered matrix.