发明名称 |
PRODUCTION OF PORELESS CERAMIC SUBSTRATE |
摘要 |
PURPOSE:To smoothen the surface of a fired molded ceramic substrate by coating the surface of the substrate with a fine powdery ceramic forming material and firing the substrate again. CONSTITUTION:A ceramic forming material 2 of 0.3-1.5mum particle size is mixed with an aq. soln. of a binder such as methylcellulose to prepare a mixed fluid 4. The surface of a fired molded ceramic substrate 1 with pores 3 of 10-50mum diameter in the surface is coated with the fluid 4 to fill the pores 3 and the coated substrate 1 is dried and fired at about 300 deg.C. Powder 6 on the surface of the substrate 1 is then removed with a scraper 5 and the substrate 1 is fired again at about 1,500 deg.C to sinter powder in the pores 3. The pores 3 are blocked up with ceramic sintered bodies 7 and a poreless ceramic substrate A is obtd. |
申请公布号 |
JPH03265557(A) |
申请公布日期 |
1991.11.26 |
申请号 |
JP19900065014 |
申请日期 |
1990.03.15 |
申请人 |
MATSUSHITA ELECTRIC WORKS LTD |
发明人 |
MIYATA YASUTAKA;MURANAKA AKIHIRO |
分类号 |
C04B41/87;C04B35/00;C04B35/622;H05K1/03 |
主分类号 |
C04B41/87 |
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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