WO2009100983A3 - Verfahren zum herstellen eines bleifreien piezokeramischen werkstoffs des kalium-natrium-niobat-systems mit hilfe von niobhydroxid und verwendung eines bauteils mit dem werkstoff - Google Patents

Verfahren zum herstellen eines bleifreien piezokeramischen werkstoffs des kalium-natrium-niobat-systems mit hilfe von niobhydroxid und verwendung eines bauteils mit dem werkstoff Download PDF

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WO2009100983A3
WO2009100983A3 PCT/EP2009/050904 EP2009050904W WO2009100983A3 WO 2009100983 A3 WO2009100983 A3 WO 2009100983A3 EP 2009050904 W EP2009050904 W EP 2009050904W WO 2009100983 A3 WO2009100983 A3 WO 2009100983A3
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piezoceramic
niobium hydroxide
component
potassium
sodium
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PCT/EP2009/050904
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English (en)
French (fr)
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WO2009100983A9 (de
WO2009100983A2 (de
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Katrin Benkert
Aurelie Cardin
Carsten Schuh
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Siemens Aktiengesellschaft
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Publication of WO2009100983A2 publication Critical patent/WO2009100983A2/de
Publication of WO2009100983A3 publication Critical patent/WO2009100983A3/de
Publication of WO2009100983A9 publication Critical patent/WO2009100983A9/de

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    • C04B35/495—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on vanadium, niobium, tantalum, molybdenum or tungsten oxides or solid solutions thereof with other oxides, e.g. vanadates, niobates, tantalates, molybdates or tungstates
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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D1/00—Oxides or hydroxides of sodium, potassium or alkali metals in general
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  • Chemical & Material Sciences (AREA)
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Abstract

Die Erfindung betrifft ein Verfahren zum Herstellen eines bleifreien piezokeramischen Werkstoffs, aufweisend mindestens eine Perowskit-Phase des Kalium-Natrium-Niobat-Systems (KNN). Die Perowskit-Phase, die die Zusammensetzung (K0,5Nb0,5)O3 aufweist, wird über folgende Verfahrensschritte hergestellt: a) Bereitstellen einer Mischung mit Ausgangsmaterialien der Perowskit-Phase und b) Wärmebehandeln der Mischung, wobei die Perowskit-Phase entsteht. Das Verfahren ist dadurch gekennzeichnet, dass ein Pulver mit Niobhydroxid (Nb(OH)3) als eine der Ausgangsmaterialien verwendet wird. Das Wärmebehandeln umfasst ein Kalzinieren und/oder ein Sintern. Durch die Verwendung des hochreaktiven Niobhydroxids als Ausgangsmaterial (Precursor) wird die Bildung einer phasenreinen KNN-Keramik während der Kalzination erleichtert. Mit Hilfe des Verfahrens kann ein piezokeramisches Bauteil in Form eines Ultraschallwandlers oder eines piezokeramischen Biegewandlers hergestellt werden. Insbesondere ist das zugängliche piezokeramische Bauteil ein Vielschicht-Piezoaktor, der zur Ansteuerung eines Kraftstoffventils einer Brennkraftmaschine eines Kraftfahrzeugs eingesetzt wird.
PCT/EP2009/050904 2008-02-13 2009-01-28 Verfahren zum herstellen eines bleifreien piezokeramischen werkstoffs des kalium-natrium-niobat-systems mit hilfe von niobhydroxid und verwendung eines bauteils mit dem werkstoff WO2009100983A2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008008902.8 2008-02-13
DE102008008902A DE102008008902B3 (de) 2008-02-13 2008-02-13 Verfahren zum Herstellen eines bleifreien piezokeramischen Werkstoffs des Kalium-Natrium-Niobat-Systems mit Hilfe von Niobhydroxid und Verwendung eines Bauteils mit dem Werkstoff

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WO2009100983A2 WO2009100983A2 (de) 2009-08-20
WO2009100983A3 true WO2009100983A3 (de) 2009-11-05
WO2009100983A9 WO2009100983A9 (de) 2010-01-28

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PCT/EP2009/050904 WO2009100983A2 (de) 2008-02-13 2009-01-28 Verfahren zum herstellen eines bleifreien piezokeramischen werkstoffs des kalium-natrium-niobat-systems mit hilfe von niobhydroxid und verwendung eines bauteils mit dem werkstoff

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DE (1) DE102008008902B3 (de)
WO (1) WO2009100983A2 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040058797A1 (en) * 2002-07-16 2004-03-25 Tatsuhiko Nonoyama Piezoelectric ceramic composition and method of production of same, piezoelectric element, and dielectric element
US20050006618A1 (en) * 2001-06-15 2005-01-13 Masaru Nanao Piezoelectric porcelain and method for preparation thereof
US20080066496A1 (en) * 2006-08-23 2008-03-20 Denso Corporation Anisotropically shaped powder, related manufacturing method, and method of manufacturing crystal oriented ceramics
DE102007016854A1 (de) * 2007-04-10 2008-10-16 Robert Bosch Gmbh Piezoelektrische, bleifreie keramische Zusammensetzung, Verfahren zu deren Herstellung sowie ein dieses Material unfassendes piezoelektrisches Bauelement

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050006618A1 (en) * 2001-06-15 2005-01-13 Masaru Nanao Piezoelectric porcelain and method for preparation thereof
US20040058797A1 (en) * 2002-07-16 2004-03-25 Tatsuhiko Nonoyama Piezoelectric ceramic composition and method of production of same, piezoelectric element, and dielectric element
US20080066496A1 (en) * 2006-08-23 2008-03-20 Denso Corporation Anisotropically shaped powder, related manufacturing method, and method of manufacturing crystal oriented ceramics
DE102007016854A1 (de) * 2007-04-10 2008-10-16 Robert Bosch Gmbh Piezoelektrische, bleifreie keramische Zusammensetzung, Verfahren zu deren Herstellung sowie ein dieses Material unfassendes piezoelektrisches Bauelement

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WO2009100983A9 (de) 2010-01-28
DE102008008902B3 (de) 2009-06-04
WO2009100983A2 (de) 2009-08-20

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