Title:
METHOD FOR CONTROLLING SHRINKAGE OF CERAMIC COMPACT BY FIRING
Document Type and Number:
Japanese Patent JP3274330
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To easily and precisely control the shrinkage of a ceramic compact by firing without causing shape defects, etc., in a fired body and to intentionally control even the shape of the resultant fired body in a multilayered ceramic substrate system, etc.
SOLUTION: Ceramic powder is pretreated so that the radius(Rs) of the ceramic powder equivalent to spheres represented by the equation Rs=6/ρS [where ρ is the true density (g/cm2) of the ceramic powder and S is the BET specific surface area (m2/g) of the ceramic powder] is regulated to ≤1μm and the pretreated powder is heat-treated at a calculated treatment temp., compacted and fired. The treatment temp. is calculated on the basis of the correlation between the ratio of the size of a ceramic compact before firing to that after firing and an arbitrary treatment temp.
More Like This:
Inventors:
Yukihisa Takeuchi
Tsutomu Nanataki
Hisanori Yamamoto
Katsuyuki Takeuchi
Tsutomu Nanataki
Hisanori Yamamoto
Katsuyuki Takeuchi
Application Number:
JP26690895A
Publication Date:
April 15, 2002
Filing Date:
October 16, 1995
Export Citation:
Assignee:
Nippon Insulator Co., Ltd.
International Classes:
C04B35/628; C04B35/622; C04B35/64; (IPC1-7): C04B35/64; C04B35/622; C04B35/628
Domestic Patent References:
| JP61146752A |
Attorney, Agent or Firm:
Ippei Watanabe
Previous Patent: HEAT ACCUMULATING HEAT EXCHANGER
Next Patent: MOLD STRUCTURE OF PLASTIC HELICAL GEAR
Next Patent: MOLD STRUCTURE OF PLASTIC HELICAL GEAR