Member, American Ceramic Society.
Chemical Compatibility between Silver Electrodes and Low-Firing Binary-Oxide Compounds: Conceptual Study
Article first published online: 20 DEC 2004
Journal of the American Ceramic Society
Volume 83, Issue 11, pages 2721–2729, November 2000
How to Cite
Valant, M. and Suvorov, D. (2000), Chemical Compatibility between Silver Electrodes and Low-Firing Binary-Oxide Compounds: Conceptual Study. Journal of the American Ceramic Society, 83: 2721–2729. doi: 10.1111/j.1151-2916.2000.tb01623.x
W. Huebner—contributing editor
- Issue published online: 20 DEC 2004
- Article first published online: 20 DEC 2004
- Manuscript No. 188846. Received December 28, 1999; approved May 22, 2000.
- silver/silver compounds;
- phase diagrams
The chemical compatibility of silver electrodes and low-firing ceramics has been considered, in terms of the existence of a tie line between silver (and/or Ag2O) and the binary oxide compound in the corresponding ternary phase diagram. The probability of the existence of the tie line is related to the conditions in the subordinated silver-based isothermal binary systems. Greater probabilities have been calculated for the systems with fewer silver-based binary compounds. Based on the concepts that have been developed, several silver-based isothermal binary systems have been investigated to identify the oxides suitable for the development of low-temperature cofired ceramics. The developed concept has been tested by investigating the phase relations in the Bi2O3–Nb2O5 and Bi2O3–V2O5 ternary systems with silver. X-ray and microstructural investigations of bismuth niobates and bismuth vanadates reveal that, as a result of the inertness of Bi2O3 and the reactivity of Nb2O5 and V2O5 toward silver, compounds that are rich in niobium or vanadium react with silver to form ternary Nb/V-Bi-Ag oxide compounds, whereas for compounds that are rich in bismuth, tie lines to silver and Ag2O do exist.