Title:
METHOD OF PRODUCING TEXTURED CERAMIC BASED ON LEAD MAGNESIUM NIOBATE AND LEAD TITANATE
Document Type and Number:
WIPO Patent Application WO2004048291
Kind Code:
A3
Abstract:
The invention relates to a method of producing textured ceramic based on lead magnesium niobate and lead titanate, comprising the preparation of a fine powder of said compound. The invention is characterised in that it also consists in: producing monocrystals of the aforementioned compound, mixing the fine powder of the compound and the monocrystals thereof, casting said mixture, and sintering the cast mixture. The inventive method can be used to produce ceramics with enhanced grain orientation and, thus, ceramics with improved piezoelectric characteristics. The invention is suitable for medical probes, sonars, actuators.
Inventors:
PHAM THI MAI (FR)
HEMERY HENRI (FR)
MARX ANNIE (FR)
HEMERY HENRI (FR)
MARX ANNIE (FR)
Application Number:
PCT/EP2003/050884
Publication Date:
August 19, 2004
Filing Date:
November 24, 2003
Export Citation:
Assignee:
THALES SA (FR)
PHAM THI MAI (FR)
HEMERY HENRI (FR)
MARX ANNIE (FR)
PHAM THI MAI (FR)
HEMERY HENRI (FR)
MARX ANNIE (FR)
International Classes:
C04B35/499; C30B9/00; H01L41/39; H01L41/43; (IPC1-7): C04B35/499; C04B41/50; H01L41/187; C30B30/00
Foreign References:
| US6048394A | 2000-04-11 |
Other References:
PHAM THI, MAI ET AL: "Homoepitaxial template grain growth of textured Pb(Mg1/3Nb1/3)O3-PbTiO3 [PMN-PT] ceramics", ADVANCES IN SCIENCE AND TECHNOLOGY (FAENZA, ITALY) (2003), 33(10TH INTERNATIONAL CERAMICS CONGRESS, 2002, PART D), 631-639, 2003, XP008021142
KHAN A ET AL: "Growth of Pb(Mg/sub 1/3/Nb/sub 2/3/)O/sub 3/-35 mol% PbTiO/sub 3/ single crystals from (111) substrates by seeded polycrystal conversion", JOURNAL OF THE AMERICAN CERAMIC SOCIETY, NOV. 1999, AMERICAN CERAMIC SOC, USA, vol. 82, no. 11, 1999, pages 2958 - 2962, XP002252739, ISSN: 0002-7820
MCNEAL K ET AL: "Processing and application of solid state converted high strain materials", SMART STRUCTURES AND MATERIALS 1999: SMART MATERIALS TECHNOLOGIES, NEWPORT BEACH, CA, USA, 3-4 MARCH 1999, vol. 3675, 1999, Proceedings of the SPIE - The International Society for Optical Engineering, 1999, SPIE-Int. Soc. Opt. Eng, USA, pages 330 - 335, XP008021147, ISSN: 0277-786X
SEABAUGH M M ET AL: "Development of highly textured piezoelectric ceramics via templated grain growth", 12TH IEEE INTERNATIONAL SYMPOSIUM ON APPLICATIONS OF FERROELECTRICS;HONOLULU, HI, UNITED STATES JUL 21-AUG 2 2000, vol. 1, 2000, IEEE Int Symp Appl Ferroelectr;IEEE International Symposium on Applications of Ferroelectrics 2000, pages 377 - 380, XP001164162
KHAN A ET AL: "Growth of Pb(Mg/sub 1/3/Nb/sub 2/3/)O/sub 3/-35 mol% PbTiO/sub 3/ single crystals from (111) substrates by seeded polycrystal conversion", JOURNAL OF THE AMERICAN CERAMIC SOCIETY, NOV. 1999, AMERICAN CERAMIC SOC, USA, vol. 82, no. 11, 1999, pages 2958 - 2962, XP002252739, ISSN: 0002-7820
MCNEAL K ET AL: "Processing and application of solid state converted high strain materials", SMART STRUCTURES AND MATERIALS 1999: SMART MATERIALS TECHNOLOGIES, NEWPORT BEACH, CA, USA, 3-4 MARCH 1999, vol. 3675, 1999, Proceedings of the SPIE - The International Society for Optical Engineering, 1999, SPIE-Int. Soc. Opt. Eng, USA, pages 330 - 335, XP008021147, ISSN: 0277-786X
SEABAUGH M M ET AL: "Development of highly textured piezoelectric ceramics via templated grain growth", 12TH IEEE INTERNATIONAL SYMPOSIUM ON APPLICATIONS OF FERROELECTRICS;HONOLULU, HI, UNITED STATES JUL 21-AUG 2 2000, vol. 1, 2000, IEEE Int Symp Appl Ferroelectr;IEEE International Symposium on Applications of Ferroelectrics 2000, pages 377 - 380, XP001164162
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