Jpn. J. Appl. Phys. 43 (2004) pp. 3516-3520  |Previous Article| |Next Article|  |Table of Contents|
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Low-Fire Processing of CaTiO₃ with 2ZnO–B₂O₃ Glass

Chiao-Chan Huang and Jau-Ho Jean

(Received January 14, 2004; revised February 12, 2004; accepted February 16, 2004; published June 9, 2004)

The effects of 2ZnO–B₂O₃ (2ZB) glass addition on the densification and dielectric properties of CaTiO₃ (CT) have been investigated. With the 2ZB glass content greater than 20 vol%, the densification temperature can be greatly reduced from 1300°C for pure CT to 875–925°C for CT+2ZB dielectric ceramics. The above result is attributed to a chemical reaction taking place at the interface of 2ZB/CT during firing. The Ca in CT dissolves into 2ZB, forming a new glass of CaO–ZnO–B₂O₃ at 840–860°C which enhances the densification kinetics of 2ZB+CT dielectric ceramics. For the samples with 20–40 vol% 2ZB, the resulting 2ZB+CT ceramics have a dielectric constant of 60-90 and dielectric loss of less than 0.15% at frequencies below 13 MHz.

KEYWORDS: dielectric, glass, densification
URL: http://jjap.ipap.jp/link?JJAP/43/3516/
DOI: 10.1143/JJAP.43.3516

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