EP 2548237 A1 20130123 - LEAD-FREE PIEZOCERAMIC MATERIAL COMPRISING A PEROVSKITE PHASE AND TUNGSTEN BRONZE PHASE AND METHOD FOR PRODUCING A PIEZOCERAMIC COMPONENT WITH THE MATERIAL
Title (en)
LEAD-FREE PIEZOCERAMIC MATERIAL COMPRISING A PEROVSKITE PHASE AND TUNGSTEN BRONZE PHASE AND METHOD FOR PRODUCING A PIEZOCERAMIC COMPONENT WITH THE MATERIAL
Title (de)
BLEIFREIER PIEZOKERAMISCHER WERKSTOFF MIT PEROWSKIT-PHASE UND WOLFRAMBRONZE-PHASE UND VERFAHREN ZUM HERSTELLEN EINES PIEZOKERAMISCHEN BAUTEILS MIT DEM WERKSTOFF
Title (fr)
MATÉRIAU PIÉZO-CÉRAMIQUE SANS PLOMB À PHASE PÉROVSKITE ET À PHASE BRONZE AU TUNGSTÈNE, ET PROCÉDÉ DE PRODUCTION D'UN COMPOSANT PIÉZO-CÉRAMIQUE DOTÉ DE CE MATÉRIAU
Publication
Application
Priority
- DE 102010025670 A 20100630
- EP 2011059479 W 20110608
Abstract (en)
[origin: WO2012000752A1] The invention relates to a lead-free, multi-phase piezoceramic material, comprising at least one perovskite phase having the perovskite phase composition (LixK1-x-yNay) (Nb1-t-uTatSbu) O3 and at least one tungsten bronze phase having the tungsten bronze phase composition (MIII m(LixK1-x-yNay)1-m(Nb1-wTaw) 5O15 + VA'2m, where MIII is at least one trivalent metal, VA' are a-site vacancies and the following relationships apply: 0 < m = 0.05; 0 = t = 0.15; 0 = u = 0.15; 0 = w = 1; 0 = x = 0.15; 0.25 = y = 0.75. Also disclosed is a method for producing a piezoceramic component using the piezoceramic material, said method comprising the following steps: a) a green body having a starting piezoceramic composition of the piezoceramic material is provided, and b) said green body is subjected to a thermal treatment, wherein the piezoceramic material of the component is produced from the starting piezoceramic composition. The piezoceramic component is, for example, an ultrasonic transducer or a piezoceramic bending transducer. In particular, the piezoceramic component is a multilayer piezo actuator used for actuating a fuel valve of an internal combustion engine of a motor vehicle.
IPC 8 full level
H01L 41/187 (2006.01)
CPC (source: EP)
C04B 35/495 (2013.01); H10N 30/053 (2023.02); H10N 30/097 (2023.02); H10N 30/8542 (2023.02); C04B 2235/3201 (2013.01); C04B 2235/3203 (2013.01); C04B 2235/3224 (2013.01); C04B 2235/3251 (2013.01); C04B 2235/3293 (2013.01); C04B 2235/768 (2013.01)
Citation (search report)
See references of WO 2012000752A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
DE 102010025670 A1 20120105; EP 2548237 A1 20130123; JP 2013534898 A 20130909; WO 2012000752 A1 20120105
DOCDB simple family (application)
DE 102010025670 A 20100630; EP 11725704 A 20110608; EP 2011059479 W 20110608; JP 2013517144 A 20110608