| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a basic SN plate whose spalling resistance is improved by remarkably suppressing its thermal expansion coefficient compared with the conventional one. <P>SOLUTION: The basic SN plate is obtained by adding a binder to a compound comprising a carbon raw material in 1.5 to 5 mass% composed of expanded graphite in 1.5 to 4 mass% and the other carbon raw material in 0 to 3.5 mass%, a spinel raw material with a grain size of 0.5 to 4 mm in 10 to 35 mass% and a metal raw material, and the balance magnesia raw material, kneading the same, performing molding and firing the molded body at ≥1,000°C in a nonoxidizing atmosphere. Its thermal expansion coefficient is <1.7% at 1,500°C. <P>COPYRIGHT: (C)2010,JPO&INPIT |
