An extraction method of metallic-compounds particles, an analysis method of the metallic-compounds particle, and an electrolysis solution used for them

摘要

the present invention addresses the problem, in the extraction and analysis of fine metallic particles (inclusions, precipitates) in a metallic material by means of electrolytic etching using a solvent electrolyte solution, of suppressing the substitution on the surface of fine metallic particles by cu ions and the like and avoid the generation of artificial cus and the like without substantially changing conventional extraction / analysis methods. are provided: a method for extracting particles of metallic compound in a metallic material by etching the metallic material in an electrolyte solution, the aforementioned method using an electrolyte solution comprising an agent forming a complex that includes a metal m? where is the product solubility of a metallic compound m? x? ay? is defined as ksp [m? x? ay?], and the product solubility of a mxay metallic compound to be extracted that is included in the metallic material is defined as ksp [mxay], delta as defined in the formula mentioned below is 10 or more; and the aforementioned electrolyte solution. delta = pksp [m? x? ay?] - pksp [mxay] = (-10g10ksp [m? x? ay?]) - (-log10ksp [mxay])