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US 2018/0006210 A1Published application
Ceramic material, method for producing the ceramic material, and electroceramic component comprising the ceramic material
AssigneeEpcos AG
InventorsAlexander GLAZUNOV, Adalbert FELTZ
Life of this patent
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Abstract
The invention relates to a ceramic material, comprising lead zirconate titanate, which additionally contains K and optionally Cu. The ceramic material can be used in an electroceramic component, for example a piezoelectric actuator. The invention also relates to methods for producing the ceramic material and the electronic component.
Claims15
A ceramic material, comprising lead zirconate titanate, which additionally contains Nd, and K, according to the following formula:
- Pb1-(3x/2)-aNdXK2aVPb(x/2)-a(Zr1-yTiy)O3,
- within the limits 0.0001≦x≦0.06, 0.0001≦a≦0.03, 0.35≦y≦0.60, preferably in the composition range.
A method for producing a multilayer component, comprising:
- A) producing a first ceramic raw material mixture by comminuting and mixing starting materials containing Pb, Zr, Ti, Nd and oxygen;
- B) calcining the first ceramic raw material mixture;
- C) comminuting the calcined first ceramic raw material mixture and mixing with a K-containing compound to produce a second ceramic raw material mixture;
- D) calcining the second ceramic raw material mixture;
- E) adding a binder to the ceramic raw material mixture of D3);
- F) forming green sheets from the mixture of E3);
- G) printing inner electrodes on the green sheets of F3, the material of the inner electrodes comprising Cu,
- H) layering a multiplicity of the ceramic green sheets of G) on top of one another to form a stack;
- I) consolidating the stack by lamination, as a result of which green parts are formed;
- J) debindering the green parts;
- and
- K) sintering the green parts, some of the Cu being transferred from the inner electrodes into the ceramic material and being incorporated therein.
9 more elements
Dependencies are inferred from the claim text.