| 학회 |
한국재료학회 |
| 학술대회 |
2007년 가을 (11/02 ~ 11/02, 성균관대학교) |
| 권호 |
13권 2호 |
| 발표분야 |
전자재료 |
| 제목 |
Constrained Sintering of LTCC Heterostructures |
| 초록 |
Low temperature co-fired ceramic (LTCC) materials specified with three different dielectric constants (k~8, 14 and 48) were used to produce different LTCC configurations. Fired x-y shrinkage and densification route depended on the relative number of each tape in a given heterostructure. Unexpectedly low x-y shrinkages of 2.5 to 7 % are believed to be associated with the physical constraining effect that results from the dissimilar sintering route and crystallization behavior of each tape. With further correlations between shrinkage behavior and subsequent crystallization, it was concluded that the tape having slower densification rate determines overall x-y shrinkage until the crystallization takes place. It was also confirmed that crystallization of the tape affected sintering negatively, i.e., the densification nearly stopped immediately after the occurrence of crystallization. The tendency of slope variation in the Arrhenius plots of thermo-mechanical curves suggests that increasing the number of embedded tape can produce a potentially less activation energy with a higher x-y shrinkage. |
| 저자 |
임원배, Ravindrassi K. Gupta, 조용수
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| 소속 |
연세대 |
| 키워드 |
LTCC; dielectric constants; heterostructure
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| E-Mail |
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