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Novel Low‐Temperature Cofired Ceramic System Containing Plate‐like Filler
Author(s) -
Cho BeomJoon,
Lee JongMyeon,
Park YunHwi
Publication year - 2011
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2011.04570.x
Subject(s) - materials science , shrinkage , sintering , ceramic , composite material , tape casting , green body , filler (materials) , casting , perpendicular , anisotropy , geometry , mathematics , physics , quantum mechanics
A new LTCC (low‐temperature cofired ceramic) system containing Al 2 O 3 platelets instead of conventional Al 2 O 3 particles as a filler material was investigated. As the Al 2 O 3 platelets were arranged parallel to the casting direction during tape casting and had preferred orientation in the green tape, the linear shrinkage of the green body took place mainly in the direction perpendicular to the platelet planes with just a little shrinkage in the horizontal without any external force during sintering. The intended anisotropic shrinkage of the new LTCC system made the constrained sintering of 10‐mm‐thick ceramic body possible, which decreased the sintering shrinkage tolerance in the x – y directions of the 10‐mm‐thick ceramic body from 0.5% to 0.05%. The new LTCC system showed equivalent electrical properties and remarkable physical properties in comparison with a conventional LTCC system.