PZT ceramic compositions having reduced sintering temperatures and process for producing same
US5433917A · kind A · utility
27Cited by
8References
12Claims
0Family size
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Key dates
| Filing date | Sep 16, 1993 |
| Grant date | Jul 18, 1995 |
| Priority date | — |
| Expiry date | Sep 16, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/8554
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Process for producing novel fluxed PZT dielectric ceramic compositions having sintering temperatures below about 1000.degree., so as to be non-reactive with electrode layers when co-fired therewith. The PZT is sintered with an effective amount of an eutectic mixture of CuO and an oxide of an alkaline earth metal, preferably barium oxide and/or strontium oxide, to reduce the sintering temperature of the PZT composition below about 1000.degree. C. Dopant such as manganese oxide may be added to reduce the dielectric losses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.