| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of extracting particulates (mainly, an average particle size is 1μm or less) existing in steel without aggregation, performing analysis after the extraction, especially accurately analyzing the particle size distribution. SOLUTION: For example, a steel sample is electrolyzed, then the electrolyzed steel sample is dipped in a solution that is different from the electrolyte used for the electrolysis and has dispersibility, and the particulates in the steel sample are extracted. Then, the extracted particulates are analyzed by a dynamic light scattering method. In this analysis method, after the extraction of the particulates, a magnetic separation operation and a classification operation by ultrasonic wave are performed. This analysis method is effective when particulate analysis of a material of much carbon content is performed or when particulates other than analyzing objects are mixed. COPYRIGHT: (C)2009,JPO&INPIT
|
