METHOD FOR ANALYZING, AND ESPECIALLY PRECIPITATING OR/AND ISOLATING PARTICLE IN STEEL

摘要

PROBLEM TO BE SOLVED: To provide a method for analyzing, and especially precipitating or/and isolating particles in steel.;SOLUTION: Provided is a method for analyzing, and especially precipitating or/and isolating particles in steel. In the method, particles are extracted from steel using an extraction agent, and then the particles are analyzed. According to the method, a dispersing agent is added to the extraction agent in order to avoid agglomeration of the particles. One embodiment of the method uses: a dispersing agent which acts three-dimensionally in a stable manner; and, as the extraction agent, an aqueous solution which contains acid, preferably hydrochloric acid or nitric acid. The extraction agent filled with dissolved constituents of steel, and a suspension formed according to extraction from particles are processed using a separation method, in order to analyze the particles according to dynamic light scattering and asymmetric flow field demarcation using an analytic ultracentrifuge or/and electron microscopy.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2019,JPO&INPIT