Beta-alumina-based sintered compact and its production method
AssigneeAsahi Glass Company, Limited
InventorAkira MITSUI
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Abstract
To provide a dense beta-alumina-based sintered compact having a high ionic conductivity as a solid electrolyte by firing at a low temperature to suppress the volatilization of Na2O and its production method. By adding RNbO3 which is a material having a low melting point to a beta-alumina powder, followed by firing, it is possible to obtain a beta-alumina-based sintered compact having a low firing temperature and containing, as the main component, dense β″ alumina crystals which are free from anomalous grain growth during the firing process.
Claims11
A beta-alumina-based sintered compact which comprises Na2O and Al2O3 as the main components and has a beta alumina crystalline phase and an RNbO3 (R:
- at least one element selected from the group consisting of Li, Na and K) crystalline phase.
Dependencies are inferred from the claim text.