| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a good vitreous carbon formed body free from crack which is obtained from a thick thermosetting resin formed body having a thickness exceeding 10 mm different from the conventional one which has maximum thickness of about 7mm, even when a temperature rising rate industrially applicable with the consideration of productivity is applied, in a carbonization process for heating the thermosetting resin formed body when the vitreous carbon formed body is manufactured. <P>SOLUTION: In the method of manufacturing the vitreous carbon formed body including the carbonization process for heating the thermosetting resin formed body, the thermosetting resin formed body has one or more gas venting holes opened to the surface and when a nearer distance out of the distance from an optional position inside the thermosetting resin formed body to the outer surface of the formed body or to the surface of the gas venting hole is expressed by (r) (mm) and the average temperature rising rate from 400 to 600°C in the carbonization process is expressed by (x) (°C/hr), relation of r<(8.0-x×a)/2 (where a=1 (mm×hr/°C)) is satisfied. <P>COPYRIGHT: (C)2007,JPO&INPIT |
