| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve a problem that a raw material for firing a ferrite magnetic body having high mechanical strength at a low temperature has not been available before. <P>SOLUTION: As for the magnetic powder to be a starting material of the sintered compact, one having high green density and small carbon component derived from a binder or the like is preferably used. Then, magnetite to be the starting material of the sintered body is obtained by dispersing hematite added with a trace quantity of carbon in a gas containing LPG gas and gaseous oxygen in the ratio of 1:4 and passing it through combustion flame. The magnetite has high tap density, and when sintered at 1,100°C after press-molded, the sintered body having density near the true density is obtained. <P>COPYRIGHT: (C)2010,JPO&INPIT |
