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The Effect of Anisotropic Shrinkage in Tape-Cast Low-Temperature Cofired Ceramics on Camber Development of Bilayer Laminates

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Abstract:

The effect of anisotropic shrinkage in a tape-cast low-temperature cofired ceramics (LTCC) on the camber development of bilayer laminate is investigated. The bilayer laminate cambers toward the direction with low-powder-packing density, which also exhibits a larger shrinkage rate. This result is in agreement with that predicted by using the viscous analogy for the constitutive relationships of a porous sintering compact. To produce thin, camber-free substrates, laminates stacked by more than three-layer tapes with alternating 90° rotation are needed.

Document Type: Research Article

DOI: http://dx.doi.org/10.1111/j.1551-2916.2011.04392.x

Affiliations: 1: Department of Materials Science and Engineering, National Tsing Hua University, 30013 Hsinchu, Taiwan 2: ACX Corp., 30052 Hsinchu, Taiwan

Publication date: March 1, 2011

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