| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for precisely and quantitatively analyzing a CaO-containing inclusion in cleaned steel by extracting the chemically unstable CaO-containing inclusion without losing/depleting the same while minimizing the effect of a carbide which inhibits the quantitative analysis of the inclusion. <P>SOLUTION: A metal sample, to which solution treatment is preliminarily applied at 800-1,100°C, is electrolyzed in a ferrous chloride aqueous solution or an organohalogen solvent by a constant-current electrolytic method and the obtained electrolyzed sample is treated with a weak acid aqueous solution to obtain the CaO-containing inclusion which is, in turn, subjected to quantitative analysis and/or the measurement of a particle size distribution. By realizing this analyzing method, the ensurance of the quality related to the CaO-containing inclusion in a metal product is imparted to a final user and a method useful as the inclusion evaluating means at the time of development of a product is obtained. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
