发明名称 |
Process for production of varistor material. |
摘要 |
<p>A process for the production of a varistor material having a nonlinear index (c) of at least 20, which comprises adding a manganese compound to zinc oxide; heating the obtained mixture in the form of a powder in the atmosphere at 1050 to 1150 DEG C; grinding the material to give a particle size of 150 mesh or below; molding the powder into a desired shape; and sintering the same at 1200 to 1350 DEG C; is disclosed.</p> |
申请公布号 |
EP0346895(A2) |
申请公布日期 |
1989.12.20 |
申请号 |
EP19890110878 |
申请日期 |
1989.06.15 |
申请人 |
SOMAR CORPORATION |
发明人 |
OCHI, HIDEO C/O SOMAR CORPORATION;IGARI, AKIHIDE C/O SOMAR CORPORATION;NAKAGAWA, ZENBEE MINAMI-KOSUGAYA-JUTAKU 2-411 |
分类号 |
C04B35/453;H01C7/10;H01C7/112;H01C17/30 |
主分类号 |
C04B35/453 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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