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WO2009043652A1 - Matériau céramique piézoélectrique sans plomb du système potassium-sodium-niobate avec dopage au fer-lanthane, procédé de fabrication d'un composant à l'aide du matériau céramique piézoélectrique et utilisation dudit composant - Google Patents

Matériau céramique piézoélectrique sans plomb du système potassium-sodium-niobate avec dopage au fer-lanthane, procédé de fabrication d'un composant à l'aide du matériau céramique piézoélectrique et utilisation dudit composant Download PDF

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Publication number
WO2009043652A1
WO2009043652A1 PCT/EP2008/061377 EP2008061377W WO2009043652A1 WO 2009043652 A1 WO2009043652 A1 WO 2009043652A1 EP 2008061377 W EP2008061377 W EP 2008061377W WO 2009043652 A1 WO2009043652 A1 WO 2009043652A1
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WO
WIPO (PCT)
Prior art keywords
piezoceramic
component
mol
green body
composition
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2008/061377
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German (de)
English (en)
Inventor
Robert Bathelt
Katrin Benkert
Aurelie Cardin
Carsten Schuh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of WO2009043652A1 publication Critical patent/WO2009043652A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—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
    • 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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/01—Manufacture or treatment
    • H10N30/05—Manufacture of multilayered piezoelectric or electrostrictive devices, or parts thereof, e.g. by stacking piezoelectric bodies and electrodes
    • H10N30/053—Manufacture of multilayered piezoelectric or electrostrictive devices, or parts thereof, e.g. by stacking piezoelectric bodies and electrodes by integrally sintering piezoelectric or electrostrictive bodies and electrodes
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/80—Constructional details
    • H10N30/85—Piezoelectric or electrostrictive active materials
    • H10N30/853—Ceramic compositions
    • H10N30/8542—Alkali metal based oxides, e.g. lithium, sodium or potassium niobates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3201—Alkali metal oxides or oxide-forming salts thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
    • C04B2235/3227—Lanthanum oxide or oxide-forming salts thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3272—Iron oxides or oxide forming salts thereof, e.g. hematite, magnetite
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/74—Physical characteristics
    • C04B2235/76—Crystal structural characteristics, e.g. symmetry
    • C04B2235/765—Tetragonal symmetry
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/74—Physical characteristics
    • C04B2235/76—Crystal structural characteristics, e.g. symmetry
    • C04B2235/768—Perovskite structure ABO3

Definitions

  • Potassium-sodium niobate system with iron-lanthanum doping method for producing a component with the piezoceramic material and use of the component
  • the invention relates to a piezoceramic material having a perovskite phase of the potassium-sodium niobate system (KNN).
  • KNN potassium-sodium niobate system
  • a method for producing a piezoceramic component with the piezoceramic material and a use of the component are specified.
  • Lead-containing piezoceramic materials based on the binary mixed system of lead zirconate and lead titanate, so-called lead zirconate titanate (Pb (Ti, Zr) O 3 , PZT), are currently being used for their excellent mechanical and piezoelectric properties, for example a high Curie temperature T c of over 300 ° C. or high d 33 coefficient in the large and
  • Piezoceramic components with these materials are, for example, bending transducers, multilayer actuators and ultrasonic transducers. These components are used in actuators, medical technology, ultrasound technology or automotive engineering.
  • lead-free piezoceramic materials are to be used in the future.
  • a lead-free, phase-pure piezoceramic material with good piezoelectric properties is known.
  • the material consists of a perovskite phase based on a
  • the empirical formula of the piezoceramic material is (Nbo, 86Ta o , iSb o , o4) O 3 .
  • the Curie temperature is 253 ° C.
  • the d 33 coefficient in the large signal range is about 300 pm / V (polarity at 5 kV / mm).
  • the object of the invention is to provide an alternative to the known lead-free piezoceramic material, which has similarly good piezoelectric properties.
  • a piezo-ceramic material comprising a perovskite phase having the stoichiometric composition (K 1 - J5 La x) (Nbi_ y Fe y) O 3, with 0.002 ⁇ x ⁇ 0.1 and 0.002 ⁇ y ⁇ 0, 1.
  • a method for producing a piezoceramic component with the piezoceramic material is also specified with the following method steps: a) providing a green body with a piezoceramic starting composition of the piezoceramic material and b) heat treating the green body, wherein the piezoceramic material of the piezoceramic starting material Component arises.
  • a lanthanum content and an iron content are between 0.2 mol% and 10 mol%. Iron and lanthanum are contained in equal or approximately equal proportions. These proportions lead to a system with a new morphotropic phase boundary. Near the morphotropic phase boundary, the piezoelectric properties of a material improve significantly.
  • the perovskite phase has a sodium content selected from the range from 0.4 mol% to 0.6 mol% and in particular from the range from 0.5 mol% to 0.55 mol%.
  • the stoichiometric composition is as follows: (K 1 - ⁇ 2 x La Na 2) (Nbi_ y Fe y) O 3, with 0.002 ⁇ x ⁇ 0.1, 0.002 ⁇ y ⁇ 0.1, and 0.004 ⁇ z ⁇ 0.006. Potassium and sodium are present in approximately equal molar proportions.
  • the ceramic material is a potassium-sodium niobate. Particularly good electrical or piezoelectric properties are achieved in the presence of both alkali metals.
  • a method for producing a piezoceramic component with the piezoceramic material is specified with the following method steps: a) providing a green body with a piezoceramic starting composition of the piezoceramic material and b) heat treating the green body, wherein from the piezoceramic starting composition of the piezoceramic material of the component arises.
  • the green body is a shaped body which consists, for example, of homogeneously mixed, pressed-together oxides of the specified metals.
  • the green body may have an organic additive, which is processed with the oxides of the metals to a slurry.
  • the organic additive is, for example, a binder or a dispersant.
  • a green body is produced in a shaping process.
  • the green body is, for example, a green sheet produced by the forming process (film drawing).
  • the green body with the piezoceramic starting composition produced in the shaping process is subjected to a heat treatment.
  • the heat treatment of the green body includes calcination and / or sintering. It comes to the formation and compression of the forming piezoceramic material.
  • mixing is more powdery, oxidic
  • Oxides of the required alkali metals K 2 O, optionally Na 2 O
  • niobium Nb 2 O 5
  • lanthanum La 2 O 3
  • iron Fe 2 O 3
  • precursors of the oxides of the metals for example carbonates (Na 2 CO 3 , K 2 CO 3 ) or oxalates. Both types of metal compounds, ie the precursors of the oxides and the oxides themselves, can be referred to as oxidic metal compounds.
  • the powders of the oxidic metal compounds can be prepared by known methods, for example according to
  • Oxalate process In this case, oxidic metal compounds with only one kind of metal can be made. It is also conceivable, in particular, that oxidic metal compounds are used with a plurality of types of metals (mixed oxides).
  • the oxidic metal compound having at least two of the metals may also be the perovskite phase itself.
  • To provide these mixed oxides can be made of the mentioned precipitation reactions. It is also conceivable
  • Mixed oxide method for providing a mixed oxide In this case, powdery oxides of the metals are mixed together and calcined at higher temperatures. Calcination results in mixed oxides.
  • a piezoceramic starting composition with at least one oxidic metal compound is used with at least two of the metals.
  • examples include potassium niobate (KNbO 3 ) or sodium niobate (NaNbO 3 ).
  • KNbO 3 potassium niobate
  • NaNbO 3 sodium niobate
  • the aforementioned alkali niobates and lanthanum iron oxide (LaFeO 3 ) are used with particular advantage.
  • Lanthanum iron oxide forms together with the
  • Alkali niobate a mixed crystal that crystallizes in the tetragonal system.
  • the workup of the metal oxides with the conversion into the piezoceramic material can be done in various ways. It is conceivable, for example, that first the powders of the oxidic metal compounds are homogeneously mixed.
  • the piezoceramic starting composition is formed in the form of a homogeneous mixture of the metal oxides. Subsequently, the piezoceramic starting composition is transferred into the piezoceramic material by heat treatment, eg by calcination.
  • the piezoceramic material is ground to a fine piezoceramic powder. Subsequently, a ceramic green body with an organic binder and further organic additives is produced from the fine piezoceramic powder in the shaping process.
  • This ceramic green body is debinded and sintered.
  • the piezoceramic component is formed with the piezoceramic material.
  • the powders of the oxidic metal compounds can be homogeneously mixed and processed in the shaping process into a ceramic green body with organic binder.
  • This green body also has the piezoceramic starting composition. Subsequent sintering leads to the piezoceramic component with the piezoceramic material.
  • a piezoceramic component having at least one piezoelectric element which has an electrode layer with electrode material, at least one further electrode layer with a further electrode material and at least one piezoceramic layer arranged between the electrode layers with the piezoceramic material.
  • a single piezoelectric element represents the smallest unit of the piezoceramic component.
  • a ceramic green sheet with the piezoceramic starting composition is printed on both sides with the electrode materials.
  • the electrode materials may be the same or different. Subsequent debindering and sintering results in the piezoelectric element.
  • a piezoelement in which the electrode material and / or the further electrode material have at least one elementary metal selected from the group silver, copper and palladium.
  • the piezoceramic material or the piezoelectric element is produced in particular by co-sintering the piezoceramic starting composition and the electrode material (cofiring).
  • the electrode material may consist of the pure metals, for example, only of silver or only of copper. An alloy of said metals is also possible, for example an alloy of silver and palladium.
  • the sintering to the piezoceramic material can be carried out both in a reducing or oxidizing sintering atmosphere become.
  • a reducing sintering atmosphere almost no oxygen is present.
  • An oxygen partial pressure is less than 1-10 "2 mbar, and preferably less than 1-10 " 3 mbar.
  • any piezoceramic component can be produced with the piezoceramic material with the aid of the piezoceramic starting composition.
  • the piezoceramic component has primarily at least one piezoelectric element described above.
  • the piezoceramic component is selected with the piezoelectric element from the group piezoceramic bending transducer, piezoceramic multilayer actuator, piezoceramic transformer, piezoceramic motor and piezoceramic ultrasonic transducer.
  • the piezoelectric element is for example part of a piezoelectric bending transducer.
  • This piezoceramic multilayer actuator is preferably used to control a fuel injection valve of an internal combustion engine. Due to the stack-shaped arrangement of the piezoelectric elements, a piezoceramic ultrasonic transducer is also accessible, with suitable dimensioning and shape. The ultrasonic transducer is used for example in medical technology or for material testing.
  • Figure 1 shows a ceramic piezoelectric element with a piezoceramic material, which by means of suitable piezoceramic starting compositions was prepared, in a lateral cross-section.
  • FIG. 2 shows a piezoceramic component with a multiplicity of piezoelements in a lateral cross section.
  • the piezoceramic material has a perovskite phase having the following composition: (K x _ _ z La x Na z!) (Nbi_ y Fe y) O 3.
  • the piezoceramic material is obtained as follows: A green body with a piezoceramic starting composition is provided. For this purpose, a mixing of pulverulent, oxidic metal compounds (starting powder) is first carried out. These oxidic metal compounds are in detail: KNbO 3 , NaNbO 3 and LaFeO 3 .
  • the starting powders are weighed in appropriate proportions and mixed in hexane or alcohol for two minutes (with a speed mixer).
  • the resulting fine powder mixture is calcined at 750 ° C. for five hours.
  • the piezoceramic composition formed in this heat treatment is ground in water for 3 hours and pressed in a molding process into a green body in the form of a powder compact of about 6 to 12 mm in diameter. This powder compact is sintered at a temperature of 1000 0 C to 1150 ° C for one hour to a sample.
  • a piezoceramic component 1 is produced with the piezoceramic material.
  • the piezoceramic component 1 is according to a first embodiment, a piezoelectric actuator 1 in monolithic
  • the piezoactuator 1 consists of a multiplicity of piezoelements 10 arranged one above the other in a stack (FIG. 1).
  • Each of the piezoelectric elements 10 has an electrode layer 11, a further electrode layer 12, and a piezoceramic layer 13 arranged between the electrode layers 11 and 12.
  • the piezoelectric elements 10 adjacent in the stack each have a common electrode layer.
  • the electrode layers 11 and 12 comprise an electrode material of a silver-palladium alloy in which palladium is contained in a proportion of 5% by weight.
  • the electrode layers consist of (approximately) pure silver.
  • the electrode material is copper.
  • the piezoactuator 1 green bodies in the form of green sheets with the piezoceramic starting composition are provided.
  • the powder mixture is mixed with the piezoceramic starting composition with an organic binder and other organic additives.
  • the ceramic green sheets are cast or drawn.
  • the green sheets are dried, printed with a paste with the electrode material, stacked, laminated, debindered and sintered to the piezoelectric actuator 1 under oxidizing sintering atmosphere (silver or silver-palladium alloy as electrode material) or reducing sintering atmosphere (copper as electrode material).
  • the resulting monolithic piezoceramic multilayer actuator is used to actuate a
  • Fuel injection valve of an internal combustion engine of a motor vehicle used.
  • piezoceramic bending transducer piezoceramic transformer or piezoceramic ultrasonic transducer are also accessible with the help of the new piezoceramic composition.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

L'invention concerne un matériau céramique piézoélectrique, présentant une phase pérovskite de composition stoechiométrique (K1-xLax) (Nb1-yFey) O3, où 0,002 = x = 0,1 et 0,002 = y = 0,1. De préférence, le matériau renferme, outre du potassium, 0,4 % à 0,6 % en mole de sodium comme autre métal alcalin. Cette composition présente un système à frontière de phase morphotropique et le matériau présente en même temps de très bonnes propriétés piézoélectriques. L'invention concerne également un procédé de fabrication d'un composant en céramique piézoélectrique à l'aide du matériau céramique piézoélectrique, lequel procédé consiste a) à préparer un corps cru à l'aide d'une composition de départ de céramique piézoélectrique du matériau céramique piézoélectrique et b) à soumettre le corps cru à un traitement thermique, le matériau céramique piézoélectrique du composant étant obtenu à partir de ladite composition de départ. Le traitement thermique consiste en une calcination et/ou un frittage de la composition de céramique piézoélectrique. Le composant en céramique piézoélectrique est par exemple un transducteur ultrasonore ou un transducteur de flexion en céramique piézoélectrique. Le composant en céramique piézoélectrique est en particulier un actionneur piézoélectrique multicouche, utilisé pour commander un injecteur de carburant d'un moteur à combustion interne d'un véhicule à moteur.
PCT/EP2008/061377 2007-09-28 2008-08-29 Matériau céramique piézoélectrique sans plomb du système potassium-sodium-niobate avec dopage au fer-lanthane, procédé de fabrication d'un composant à l'aide du matériau céramique piézoélectrique et utilisation dudit composant Ceased WO2009043652A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007046450.0 2007-09-28
DE102007046450A DE102007046450A1 (de) 2007-09-28 2007-09-28 Bleifreier piezokeramischer Werkstoff des Kalium-Natrium-Niobat-Systems mit Eisen-Lanthan-Dotierung, Verfahren zum Herstellen eines Bauteils mit dem piezokeramischen Werkstoff und Verwendung des Bauteils

Publications (1)

Publication Number Publication Date
WO2009043652A1 true WO2009043652A1 (fr) 2009-04-09

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PCT/EP2008/061377 Ceased WO2009043652A1 (fr) 2007-09-28 2008-08-29 Matériau céramique piézoélectrique sans plomb du système potassium-sodium-niobate avec dopage au fer-lanthane, procédé de fabrication d'un composant à l'aide du matériau céramique piézoélectrique et utilisation dudit composant

Country Status (2)

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DE (1) DE102007046450A1 (fr)
WO (1) WO2009043652A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107857590A (zh) * 2017-11-17 2018-03-30 天津大学 一种铌酸钾钠基无铅压电陶瓷材料及其制备方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115572165B (zh) * 2021-06-21 2023-08-29 四川大学 一种高机械品质因数的铌锆酸铋钾钠铜铁无铅压电陶瓷
DE102023117143A1 (de) * 2023-06-29 2025-01-02 Vega Grieshaber Kg Vibrationssensor
CN117285352B (zh) * 2023-09-22 2025-08-08 西安理工大学 抗疲劳性能优异的铌酸钾钠基陶瓷材料及其制备方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008122458A1 (fr) * 2007-04-10 2008-10-16 Robert Bosch Gmbh Composition céramique piézoélectrique exempte de plomb, son procédé de production, et composant piézoélectrique comportant ce matériau

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008122458A1 (fr) * 2007-04-10 2008-10-16 Robert Bosch Gmbh Composition céramique piézoélectrique exempte de plomb, son procédé de production, et composant piézoélectrique comportant ce matériau

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
KEN-ICHI KAKIMOTO ET AL.: "Ferroelectric and Piezoelectric Properties of KNbO3 Ceramics Containing Small Amounts of LaFeO3", JPN. J. APPL. PHYS., vol. 42, 2003, pages 6102 - 6105, XP002502585 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107857590A (zh) * 2017-11-17 2018-03-30 天津大学 一种铌酸钾钠基无铅压电陶瓷材料及其制备方法
CN107857590B (zh) * 2017-11-17 2020-12-15 天津大学 一种铌酸钾钠基无铅压电陶瓷材料及其制备方法

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