| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for removing inclusions and impurities in metal using inexpensive surfactant components, and to provide deoxidization and desulfurization methods. <P>SOLUTION: Solidified metal including inclusions is immersed into molten active metal so as to be fused, and the inclusions in the fused metal are moved to the side of the active metal by an interfacial tension gradient produced between the fused metal and the active metal so as to be removed. Alternatively, impurities made into solid solution in the metal are precipitated by heat treatment for the metal into inclusions, thereafter, the inclusions are immersed into molten active metal so as to be fused, and the inclusions in the fused metal are moved to the side of the active metal by an interfacial tension gradient produced between the fused metal and the active metal so as to be removed. In the deoxidization method for metal, these methods are used. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
