Method for production of PZT-based ceramics having a slow sintering temperature
AssigneeRobert Bosch GmbH
InventorsMarianne Hammer-Altmann, Marc Kuehlein, Karolin Lofruthe
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Abstract
A method for manufacturing a PZT-based low-sintering piezoelectric ceramic material, the ions to be added as starting compounds being added as powdered oxides and/or powdered carbonates, mixed together, and then calcined to form the piezoelectric ceramic material. After calcining the starting compounds, lithium in ionic form is added to the mixture in an amount of 0.01 to 0.1 wt. % in relation to the weight of the PZT ceramic.
Claims2
A method for manufacturing a low-sintering PZT-based piezoelectric ceramic material having the general formula Pb(Zr1-xTix)O3, comprising:
- mixing together ions added in the form of powdered oxides or powdered carbonates of at least lead, zirconium and titanium as starting compounds, and calcining the starting compounds to form the piezoelectric ceramic material, wherein after calcining the starting compounds, lithium in salt form is added to the mixture in an amount in the range of 0.01 to 0.1 wt. % in relation to the weight of the PZT ceramic, wherein a sintering temperature in the range of 850° C. to 950° C. is obtained for the mixture of calcined starting compounds and ionic lithium;
- wherein the starting compound mixture is doped using combinations of elements selected from the group consisting of Ca, La, Nb, Fe, and Cu.
A method for manufacturing a low-sintering PZT-based piezoelectric ceramic material having the general formula Pb(Zr1-xTix)O3, comprising:
- mixing together ions added in the form of powdered oxides or powdered carbonates of at least lead, zirconium and titanium as starting compounds, and calcining the starting compounds to form the piezoelectric ceramic material, wherein after calcining the starting compounds, lithium in salt form is added to the mixture in an amount in the range of 0.01 to 0.1 wt. % in relation to the weight of the PZT ceramic, wherein a sintering temperature in the range of 850° C. to 950° C. is obtained for the mixture of calcined starting compounds and ionic lithium;
- wherein lithium is added in the form of Li2CO3 or LiNO3;
- and
- wherein the starting compound mixture is doped using combinations of elements selected from the group consisting of Ca, La, Nb, Fe, and Cu.
Dependencies are inferred from the claim text.