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Formkoerper auf der Basis von PZT (Pb(Zr,Ti)O3, Bleizirkonat-Bleititanat), Verfahren und Zwischenprodukt zu deren Herstellung

Moulded body based on PZT (Pb(Zr,Ti)O3, lead zirconate - lead titanate) process and intermediate product for its production
 
: Glaubitt, W.; Jahn, R.; Merklein, S.

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Frontpage ()

DE 1993-4332831 A: 19930927
DE 1993-4332831 A: 19930927
EP 1994-114170 A: 19940909
DE 4332831 C1: 19941006
EP 645353 B1: 20010808
EP 645353 B1: 20010808
C04B0035
C04B0035
Deutsch
Patent, Elektronische Publikation
Fraunhofer ISC ()

Abstract
The invention relates to moulded parts, fibres and coatings based on PZT (lead zirconate-lead titanate) which are obtained by adding organic zirconium compounds of the formula Zr(OR->1 )<-4 (I) and organic titanium compounds of the formula Ti(OR->2)<-4 (II) separately or together and refer to 1 Mol of the compounds (I) plus (II) with 0 to 4 Mol of an alcohol or a mixture of alcohols of the formula R->3 -X-R->4-OH and/or R->3 -CX-R->4 -OH (IV), that the resulting mixture(s) or compounds (I) and (II) are added separately or together and related each to 1 to 3 Mol of the compounds (I) and (II) with 1 to 3 Mols of one or several carbon acids comprising 2 to 10 carbon atoms, that everything related 1 Mol of the compound (I) plus (II) is mixed with 1 to 1.5 Mol of one or several Pb(II) and/or Pb(IV) carboxylate that the mixture is subjected to a hydrolitic condensation, that the volatile constituents are removed until a compound which is solid at room temperature results, that the solid mass is heated until a highly viscous liquid is obtained, that the liquid is processed into moulded parts, fibres or coatings, and that they are heated to temperatures of at least 500 degrees Celsius

: http://publica.fraunhofer.de/dokumente/PX-15025.html