Development, Analysis, and Application of a Glass–Alumina-Based Self-Constrained Sintering Low-Temperature Cofired Ceramic
The effects of an inner constraint layer and alumina particles on the microstructure, strength, and shrinkage of the laminated low-temperature cofired ceramic (LTCC) green sheet were investigated. Alumina particles of several sizes were used in the inner-constraint layer in order to strengthen the LTCC substrate. Smaller alumina particles in the inner-constraint layer produced a substrate with a high bending strength. Sintering shrinkage in the x–y direction of the LTCC is related to the bending strength of the debinded alumina particle layer used for an inner-constraint layer. A larger pore size in the inner-constraint layer was found to increase the distance of the glass penetration from the glass–alumina layer into the inner-constraint layer. The total thickness of the constraint layer changes the shrinkage in the x–y direction and the bending strength.
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Document Type: Research Article
Affiliations: Murata Manufacturing Co. Ltd., Higashi Koutari Nagaokakyo, Kyoto 617-8555, Japan
Publication date: 2007-10-01