Chemically driven zero shrinkage dielectric ceramics

Ik Jin Choi, Kyung Pyo Hong, Jae Woong Jung, Yong Soo Cho

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

A new approach of producing ∼0% fired shrinkage of dielectric ceramics is introduced without using the known physically constraining interaction during firing. The combination of SiC and Al 2O 3 fillers with a typical calcium aluminoborosilicate glass demonstrated the potential of generating nearly zero shrinkage, presumably from the chemical reaction between the glass and SiC above a critical temperature. The sample with zero shrinkage, as exemplified with the composition of 25 wt% SiC, 25 wt% Al 2O 3, and 50 wt% glass, does not produce fully dense microstructure, but shows acceptable values of k (dielectric constant) ∼7.4 and tanδ ∼0.004 at 1 MHz. The achievement of the least shrinkage is found to be sensitive to the relative content of SiC and firing temperature.

Original languageEnglish
Pages (from-to)1796-1798
Number of pages3
JournalJournal of the American Ceramic Society
Volume95
Issue number6
DOIs
Publication statusPublished - 2012 Jun

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

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