Compositions: ceramic – Ceramic compositions – Refractory
Patent
1997-05-19
1999-09-21
Group, Karl
Compositions: ceramic
Ceramic compositions
Refractory
501104, C04B 35486
Patent
active
059553928
ABSTRACT:
A ceramic green sheet includes ceramic particles having a spherical diameter of 0.01-0.5 .mu.m of a primary particle as a ceramic component, an average degree of aggregation of 10 or less, wherein the ceramic green sheet contains at most 1 vol % of secondary particles having a diameter of 20 .mu.m or more and has a surface roughness (Ra) of 0.2 .mu.m or less. A method for producing a ceramic substrate having a thickness of 30 .mu.m or less includes the steps of: preparing a ceramic slurry by mixing a ceramic powder with an organic binder and at least one organic solvent, and adjusting a viscosity to be within the range of 100-10,000 mPa.s; removing coarse aggregated particles from the ceramic slurry; molding the ceramic slurry into a ceramic green sheet by a reverse roll coater method; and firing the ceramic green sheet so that an average crystal grain size be 2 .mu.m or less.
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Maeda Takahiro
Nanataki Tsutomu
Takeuchi Yukihisa
Yamamoto Hisanori
Group Karl
NGK Insulators Ltd.
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