| 摘要 |
PURPOSE:To prevent chipping (powdering) of boron nitride (BN) powder in using a jig and a tool for molding glass by containing a molded article of BN. CONSTITUTION:A jig and a tool for molding glass, containing >=10wt.% BN are made by molding and after molding, the jig and the tool for molding glass are subjected to ultrasonic cleaning. Since BN powder insufficiently bonded during molding is removed, powdering in use after that is eliminated. |
