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US 2011/0299213 A1Published application
Varistor ceramic, multilayer component comprising the varistor ceramic, and production method for the varistor ceramic
AssigneeEpcos AG
InventorsMonika Piber, Hermann Grünbichler
Life of this patent
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Abstract
A varistor ceramic includes Zn as the main component and Pr in a proportion of 0.1 to 3 atom %.
Claims17
1-15. (canceled)
A varistor ceramic comprising:
- Zn as a main component, and
- Pr in a proportion of 0.1 to 3 atom %, based on the atom % of the ceramic.
A varistor ceramic comprising:
- ZnO as a main component,
- Pr3+/Pr4+ in a proportion of 0.1 to 3 atom %,
- Co2+/Co3+ in a proportion of 0.1 to 10 atom %,
- Ca2+ in a proportion of 0.001 to 5 atom %,
- Si4+ in a proportion of 0.001 to 0.5 atom %,
- Al3+ in a proportion of 0.001 to 0.1 atom %,
- Cr3+ in a proportion of 0.001 to 5 atom %, and
- B3+ in a proportion of 0.001 to 5 atom %, all based on the atom % of the ceramic.
5 more elements
A method for producing a varistor ceramic comprising:
- a) calcining raw ceramic material,
- b) producing a slurry containing the raw ceramic material,
- c) preparing green foils from the slurry,
- d) debinding the green foils,
- e) sintering debound green foils.
2 more elements
Dependencies are inferred from the claim text.