CN114605150B - 一种高密度、低损耗及高介电常数压电陶瓷及其制备方法 - Google Patents
一种高密度、低损耗及高介电常数压电陶瓷及其制备方法 Download PDFInfo
- Publication number
- CN114605150B CN114605150B CN202210279958.3A CN202210279958A CN114605150B CN 114605150 B CN114605150 B CN 114605150B CN 202210279958 A CN202210279958 A CN 202210279958A CN 114605150 B CN114605150 B CN 114605150B
- Authority
- CN
- China
- Prior art keywords
- piezoelectric ceramic
- loss
- density
- dielectric
- low
- 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.)
- Active
Links
- 239000000919 ceramic Substances 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 238000005245 sintering Methods 0.000 claims abstract description 9
- 239000000126 substance Substances 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 6
- 239000011812 mixed powder Substances 0.000 claims description 6
- 229910052709 silver Inorganic materials 0.000 claims description 6
- 239000004332 silver Substances 0.000 claims description 6
- 229910021193 La 2 O 3 Inorganic materials 0.000 claims description 5
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000007639 printing Methods 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 238000005453 pelletization Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052760 oxygen Inorganic materials 0.000 abstract description 7
- 239000001301 oxygen Substances 0.000 abstract description 7
- 229910010293 ceramic material Inorganic materials 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 8
- 239000013078 crystal Substances 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 239000007791 liquid phase Substances 0.000 description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 description 3
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 description 3
- 230000001737 promoting effect Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 150000001768 cations Chemical class 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 241000592183 Eidolon Species 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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
- C04B35/48—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 zirconium or hafnium oxides, zirconates, zircon or hafnates
- C04B35/49—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 zirconium or hafnium oxides, zirconates, zircon or hafnates containing also titanium oxides or titanates
- C04B35/491—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 zirconium or hafnium oxides, zirconates, zircon or hafnates containing also titanium oxides or titanates based on lead zirconates and lead titanates, e.g. PZT
- C04B35/493—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 zirconium or hafnium oxides, zirconates, zircon or hafnates containing also titanium oxides or titanates based on lead zirconates and lead titanates, e.g. PZT containing also other lead compounds
-
- 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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/51—Metallising, e.g. infiltration of sintered ceramic preforms with molten metal
- C04B41/5116—Ag or Au
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/85—Coating or impregnation with inorganic materials
- C04B41/88—Metals
-
- 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
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3241—Chromium oxides, chromates, 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
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3251—Niobium oxides, niobates, tantalum oxides, tantalates, 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
- C04B2235/3294—Antimony oxides, antimonates, antimonites or oxide forming salts thereof, indium antimonate
-
- 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
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Composite Materials (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
本发明提供一种高密度、低损耗、高介电常数压电陶瓷，其化学通式为：PbxCaeSbyLa1‑x‑e‑y(ZrwTivNb1‑w‑v)O3+m％Cr2O3+n％PbO，通过掺杂La3+能降低晶格畸变程度，且能降低氧空位的钉扎效应，达到降低介电损耗的目的，通过加入Nb2O5可改变了陶瓷中氧空位的浓度和阳离子空位浓度，从而降低烧结温度，降低介电损耗，并使得压电陶瓷的耐受性和密度提高，具有高介电常数，高压电常数，低损耗和高温条件下的耐受性，适用于高档医疗设备和各种介电常数要求较高的设备，本发明提供的制备方法采用传统方法即传统氧化物混合方法进行合成，常压烧结，通过配方和工艺的调整和改进来自北具有较好综合性能的压电陶瓷材料，提高了其电学性能，得到了优异的压电性能。
Description
技术领域
本发明压电陶瓷技术领域，具体涉及一种高密度、低损耗及高介电常数的压电陶瓷及其制备方法。
背景技术
压电陶瓷材料是一种电能与机械能相互转换的材料，即给压电材料施加一个机械应力，将会在其表面产生电荷，反之，将外加电场施加在压电材料上，压电材料也会产生机械形变。压电陶瓷具有体积小、分辨率高、响应快、推力大等一系列特点，在传感器、执行器、换能器、无损检测和通讯技术等领域已获得了广泛的应用。
然而目前市场上对高档医用超声诊断仪的不断要求。同时，一般介电常数都比较低4800以下、介电损耗都比较大，约在3％以上，且密度较低，限制了薄片作为高频的应用；压电常数低，限制了高精灵敏度的要求，从而限制了其整体的发展。
因此，亟需一种高密度、低损耗、高介电常数的压电陶瓷及其制备方法。
发明内容
本发明为解决现有技术问题，提供一种高密度、低损耗及高介电常数的压电陶瓷，具有低介电损耗，高介电常数，高密度，高压电常数的优点，适用于各种高端医疗设备，有增长使用寿命，提高灵敏度的优点。
本发明的第二个目的是提供一种高密度、低损耗及高介电常数的压电陶瓷的制备方法。
为实现上述第一个目的，本发明采用的技术方案是：
一种高密度、低损耗及高介电常数压电陶瓷，所述压电陶瓷的化学通式为：PbxCaeSbyLa1-x-e-y(ZrwTivNb1-w-v)O3+m％Cr2O3+n％PbO；通过在上述体系中掺杂La3+能降低晶格畸变程度，使得伪四方相结构得到增强，并且La3+能明显抑制样品晶粒长大，晶粒的减小对样品电学性能的提高起着促进作用，且能降低氧空位的钉扎效应，达到降低介电损耗的目的，通过在上述体系中掺杂少量Ca2+，能够增强Zr4+与Ti4+之间的相互作用，从而达到提高压电陶瓷的密度。
如上所述的高密度、低损耗及高介电常数的压电陶瓷，所述化学通式中0.5<x<1，0<e<0.5，0<y<0.5，0<La<0.5。
如上所述的高密度、低损耗及高介电常数的压电陶瓷，所述化学通式中0<w<0.8，0<v<0.7；通过加入Nb2O5可改变了陶瓷中氧空位的浓度和阳离子空位浓度，在不降低压电常数的情况下提高材料的介电常数和调控缺陷浓度，而PbO存在很丰富的液相区，加入后在烧结过程中形成少量液相，从而降低烧结温度，降低介电损耗，并使得压电陶瓷的耐受性和密度提高，本申请相较于现有技术，具有高介电常数，高压电常数，低损耗和高温条件下的耐受性，适用于高档医疗设备和各种介电常数要求较高的设备。
如上所述的高密度、低损耗及高介电常数的压电陶瓷，所述化学通式中0<m<5，0<n<5。
如上所述的高密度、低损耗及高介电常数的压电陶瓷，所述压电陶瓷的包括以下组分Pb3O4,Sb2O3,La2O3,ZrO2,TiO2,Nb2O5,Cr2O3。
如上所述的高密度、低损耗及高介电常数的压电陶瓷，所述压电陶瓷的介电常数＞5000。
如上所述的高密度、低损耗及高介电常数的压电陶瓷，所述压电陶瓷的介电损耗≤1.2％。
如上所述的高密度、低损耗及高介电常数的压电陶瓷，所述压电陶瓷的密度≥7.85。
为实现上述第二个目的，本发明采用的技术方案是：
如上所述的高密度、低损耗及高介电常数的压电陶瓷的制备方法，其特征在于，包括以下步骤：
步骤1：将Pb3O4,Sb2O3,La2O3,ZrO2,TiO2,Nb2O5,Cr2O3作为原料，按PbxCaeSbyLa1-x-e-y(ZrwTivNb1-w-v)O3+m％Cr2O3+n％PbO的配比混合均匀，在850℃-900℃下保温3-4小时后得到混合粉料；
步骤2：将PbxCaeSbyLa1-x-e-y(ZrwTivNb1-w-v)O3+m％Cr2O3+n％PbO混合粉料细磨2-4h，再加入0.4-0.8wt％的聚乙烯醇(PVA)粘结剂造粒，再压制成型；
步骤3：最后将成型后坯体于1120-1280℃下烧结3-5h，冷却后印刷银浆，最后对烧好银后的试样进行极化，即得成品；
如上所述的高密度、低损耗及高介电常数的压电陶瓷的制备方法，所述步骤2中细磨后粉体的粒径为1-2μm。
本发明相对于现有技术，有以下优点：
本发明所提供的一种高密度、低损耗及高介电常数的压电陶瓷，其化学通式为：PbxCaeSbyLa1-x-e-y(ZrwTivNb1-w-v)O3+m％Cr2O3+n％PbO，通过掺杂La3+能降低晶格畸变程度，使得伪四方相结构得到增强，并且La3+能明显抑制样品晶粒长大，晶粒的减小对样品电学性能的提高起着促进作用，且能降低氧空位的钉扎效应，达到降低介电损耗的目的，通过加入Nb2O5可改变了陶瓷中氧空位的浓度和阳离子空位浓度，在不降低压电常数的情况下提高材料的介电常数和调控缺陷浓度，而PbO存在很丰富的液相区，加入后在烧结过程中形成少量液相，从而降低烧结温度，降低介电损耗，并使得压电陶瓷的耐受性和密度提高，本申请相较于现有技术，具有高密度、高介电常数，高压电常数，低损耗和高温条件下的耐受性，适用于高端医疗设备和各种介电常数要求较高的设备，
本发明提供的一种高密度、低损耗及高介电常数的压电陶瓷的制备方法，以PbxCaeSbyLa1-x-e-y(ZrwTivNb1-w-v)O3为基础，采用传统方法即传统氧化物混合方法进行合成，常压烧结，通过配方的调整和改进得到具有较好综合性能的压电陶瓷材料，提高了其电学性能，得到了优异的压电性能，提供了一种介电常数ε高、压电系数d33高、介电损耗tanδ小、密度高，且综合性能好的压电陶瓷，其中，ε＞5000、d33＞850、tanδ≤1.2％。
具体实施方式
下面结合实施例对本发明的技术方案进行说明。
本发明一种高密度、低损耗及高介电常数的压电陶瓷的制备方法：
步骤1：将Pb3O4,Sb2O3,La2O3,ZrO2,TiO2,Nb2O5,Cr2O3作为原料，按PbxCaeSbyLa1-x-e-y(ZrwTivNb1-w-v)O3+m％Cr2O3+n％PbO的配比混合均匀，在900℃下保温4h后得到混合粉料；
步骤2：将PbxCaeSbyLa1-x-e-y(ZrwTivNb1-w-v)O3+m％Cr2O3+n％PbO混合粉料细磨3h，细磨后粉体的粒径为0.6μm，再加入0.5wt％的聚乙烯醇(PVA)粘结剂造粒，再压制成型；
步骤3：最后将成型后坯体于1280℃下烧结4h，冷却后印刷银浆，最后对烧好银后的试样进行极化，即得成品；
具体实施例如下：
实施例1：
x＝0.63，e＝0.18，y＝0.07，w＝0.4，v＝0.3，m＝0.4，n＝0.6。
实施例2：
x＝0.52，e＝0.21，y＝0.03，w＝0.5，v＝0.1，m＝0.3，n＝0.7。
实施例3：
x＝0.73，e＝0.15，y＝0.01，w＝0.2，v＝0.6，m＝0.2，n＝0.8。
实施例4：
x＝0.83，e＝0.03，y＝0.09，w＝0.2，v＝0.6，m＝0.2，n＝0.8。
对上述实施例1-4的介电性能进行测试，成品尺寸均设定为直径为10mm，厚度为1mm，测试结果列于下表1。
表1：高密度、低损耗及高介电常数的压电陶瓷介电性能
从表中可得出，本发明所提供的一种高密度、低损耗及高介电常数的压电陶瓷，其化学通式为：PbxCaeSbyLa1-x-e-y(ZrwTivNb1-w-v)O3+m％Cr2O3+n％PbO，当x＝0.83，e＝0.03，y＝0.09，w＝0.2，v＝0.6，m＝0.2，n＝0.8时，其介电损耗最小，压电常数最大，且密度最高，本发明所提供的一种高密度、低损耗及高介电常数的压电陶瓷，通过掺杂La3+能降低晶格畸变程度，使得伪四方相结构得到增强，并且La3+能明显抑制样品晶粒长大，晶粒的减小对样品电学性能的提高起着促进作用，且能降低氧空位的钉扎效应，达到降低介电损耗的目的，PbO存在很丰富的液相区，加入后在烧结过程中形成少量液相，从而降低烧结温度，降低介电损耗，并使得压电陶瓷的耐受性和密度提高，适用于高档医疗设备和各种介电常数要求较高的设备。
以上所述仅为本申请的较佳实施例而已，并不用以限制本申请，凡在本申请的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本申请的保护范围之内。
Claims (4)
1.一种高密度、低损耗及高介电常数的压电陶瓷，其特征在于：所述压电陶瓷的化学通式为：PbxCaeSbyLa1-x-e-y(ZrwTivNb1-w-v)O3 +m%Cr2O3+n%PbO；
所述化学通式中0.52<x<0.83，0<e<0.5，0.01<y<0.09，0<La<0.24；
所述化学通式中0.2<w<0.5，0.1<v<0.6；
所述压电陶瓷的原料，包括以下组分Pb3O4，Sb2O3，La2O3，ZrO2，TiO2，Nb2O5，Cr2O3；
所述化学通式中0.2<m<0.4，0.6<n<0.8；
所述压电陶瓷的密度≥7.85 g/cm3；
所述压电陶瓷的制备方法，包括以下步骤：
步骤1：将Pb3O4, Sb2O3, La2O3, ZrO2, TiO2, Nb2O5, Cr2O3作为原料，按PbxCaeSbyLa1-x-e-y(ZrwTivNb1-w-v)O3 +m%Cr2O3+n%PbO的配比混合均匀，在850℃-900℃下保温3-4小时后得到混合粉料；
步骤2：将PbxCaeSbyLa1-x-e-y(ZrwTivNb1-w-v)O3 +m%Cr2O3+n%PbO混合粉料细磨2-4h，再加入0.4-0.8wt%的聚乙烯醇（PVA）粘结剂造粒，再压制成型；
步骤3：最后将成型后坯体于1120-1280℃下烧结3-5h，冷却后印刷银浆，最后对烧好银后的试样进行极化，即得成品。
2.根据权利要求1所述的高密度、低损耗及高介电常数的压电陶瓷，其特征在于：所述压电陶瓷的介电常数＞5500 F/m。
3.根据权利要求1所述的高密度、低损耗及高介电常数的压电陶瓷，其特征在于：所述压电陶瓷的介电损耗≤1.2%。
4.根据权利要求1所述的高密度、低损耗及高介电常数的压电陶瓷，其特征在于：所述步骤2中细磨后粉体的粒径为1-2μm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210279958.3A CN114605150B (zh) | 2022-03-22 | 2022-03-22 | 一种高密度、低损耗及高介电常数压电陶瓷及其制备方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210279958.3A CN114605150B (zh) | 2022-03-22 | 2022-03-22 | 一种高密度、低损耗及高介电常数压电陶瓷及其制备方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114605150A CN114605150A (zh) | 2022-06-10 |
| CN114605150B true CN114605150B (zh) | 2023-11-14 |
Family
ID=81864989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210279958.3A Active CN114605150B (zh) | 2022-03-22 | 2022-03-22 | 一种高密度、低损耗及高介电常数压电陶瓷及其制备方法 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114605150B (zh) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002293624A (ja) * | 2001-03-30 | 2002-10-09 | Tdk Corp | 圧電磁器およびその製造方法並びに圧電素子 |
| KR20030053249A (ko) * | 2001-12-22 | 2003-06-28 | 재단법인 포항산업과학연구원 | 가속도 센서용 압전 세라믹스 조성물 |
| CN104230333A (zh) * | 2014-02-27 | 2014-12-24 | 中国科学院声学研究所 | 一种高温压电陶瓷材料及其制备方法 |
| CN104609858A (zh) * | 2014-12-25 | 2015-05-13 | 南阳森霸光电股份有限公司 | 被动式热释电红外传感器用热释电陶瓷材料及其制备方法 |
| CN108275998A (zh) * | 2017-12-27 | 2018-07-13 | 贵州振华红云电子有限公司 | 三元系psn-pzt压电陶瓷片及其制备方法 |
| CN112174663A (zh) * | 2020-09-21 | 2021-01-05 | 李茂洪 | 一种高性能压电陶瓷及其制备方法 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7303692B2 (en) * | 2003-10-15 | 2007-12-04 | Piezotech, Llc | Compositions for high power piezoelectric ceramics |
| US20060229187A1 (en) * | 2005-04-11 | 2006-10-12 | De Liufu | Compositions for high power piezoelectric ceramics |
-
2022
- 2022-03-22 CN CN202210279958.3A patent/CN114605150B/zh active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002293624A (ja) * | 2001-03-30 | 2002-10-09 | Tdk Corp | 圧電磁器およびその製造方法並びに圧電素子 |
| KR20030053249A (ko) * | 2001-12-22 | 2003-06-28 | 재단법인 포항산업과학연구원 | 가속도 센서용 압전 세라믹스 조성물 |
| CN104230333A (zh) * | 2014-02-27 | 2014-12-24 | 中国科学院声学研究所 | 一种高温压电陶瓷材料及其制备方法 |
| CN104609858A (zh) * | 2014-12-25 | 2015-05-13 | 南阳森霸光电股份有限公司 | 被动式热释电红外传感器用热释电陶瓷材料及其制备方法 |
| CN108275998A (zh) * | 2017-12-27 | 2018-07-13 | 贵州振华红云电子有限公司 | 三元系psn-pzt压电陶瓷片及其制备方法 |
| CN112174663A (zh) * | 2020-09-21 | 2021-01-05 | 李茂洪 | 一种高性能压电陶瓷及其制备方法 |
Non-Patent Citations (5)
| Title |
|---|
| A 、B 位空位比对PZT压电性能的影晌;成炎炎等;《压电与声光》;20190228;第41卷(第1期);第25-31页 * |
| Structural and dielectric properties of Pb0.9(La1-ySby)0.1(Zr0.65Ti0.35)0.975O3 ferroelectric ceramics;Radheshyam Rai等人;《Materials Letters》;20030731;第57卷(第22-23期);摘要、第2节第2段、表3 * |
| 华南工学院等编.陶瓷工艺学.《陶瓷工艺学》.中国建筑工业出版社,1981, * |
| 张启龙等.中国战略性新兴产业——新材料 功能陶瓷材料与器件.《中国战略性新兴产业——新材料 功能陶瓷材料与器件》.2017, * |
| 陈宏等.压电陶瓷及其应用.《压电陶瓷及其应用》.陕西师范大学出版总社有限公司,2019, * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114605150A (zh) | 2022-06-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115340377B (zh) | 一种高性能压电陶瓷的制备方法 | |
| CN108329027B (zh) | 一种具有双层“芯-壳”结构的细晶储能介质陶瓷材料及其制备方法 | |
| CN103636018A (zh) | 压电材料 | |
| EP2610233B1 (en) | Piezoelectric ceramic and piezoelectric device | |
| CN109437895B (zh) | 一种锆钛酸铅-铌镁酸铅压电陶瓷的制备方法 | |
| CN112552048B (zh) | 一种具有高压电性能和高剩余极化强度铌酸钾钠陶瓷的制备方法 | |
| CN115321979B (zh) | 一种多元素掺杂的铅基压电陶瓷及其制备方法 | |
| CN111908917A (zh) | 一种锆酸铋钠锶掺杂铌酸钾钠基压电陶瓷材料及其制备方法 | |
| CN114133243A (zh) | 一种高介电常数高压电应变发射型压电陶瓷材料及制备方法 | |
| CN109320244B (zh) | 一种低温烧结压电陶瓷材料及其制备方法 | |
| CN114605150B (zh) | 一种高密度、低损耗及高介电常数压电陶瓷及其制备方法 | |
| CN115403375B (zh) | 一种锆钛酸铅压电陶瓷材料及其制备方法 | |
| CN112457011A (zh) | 扬声器用四元系压电陶瓷及其制备方法 | |
| CN115286386B (zh) | 一种非化学计量Nb5+的铌钽锆铁酸钾钠铋陶瓷及其制备方法 | |
| CN114249592A (zh) | 硬性压电陶瓷材料的制备方法 | |
| CN103539447B (zh) | 一种低温烧结的压电陶瓷材料及其制备方法 | |
| CN109336594B (zh) | 低电容变化率压电陶瓷元件、压电陶瓷及其制作方法 | |
| KR20220169975A (ko) | 배향 무연 압전 세라믹 조성물 및 이의 제조방법 | |
| CN116606143B (zh) | 一种压电陶瓷材料及其制备方法 | |
| CN115504783B (zh) | 一种knn基无铅压电陶瓷及其制备方法 | |
| CN116751057B (zh) | 一种具有超高电致应变和逆压电系数的压电陶瓷及其制备方法 | |
| CN114621009B (zh) | 一种铌镁酸铅-钛酸铅基压电陶瓷材料及其制备方法 | |
| CN118063212A (zh) | 一种锆钛酸铅压电陶瓷材料及其制备方法 | |
| CN108585836B (zh) | 一种bnt基压电陶瓷及其制备方法 | |
| CN118324526A (zh) | 一种高介低损耗压电陶瓷材料及其制备方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 528400, 2nd Floor, No. 4 Longzhu 2nd Street, Shachong Shangtang, South District, Zhongshan City, Guangdong Province Patentee after: Zhongshan Demao Shengnuo Materials Co.,Ltd. Country or region after: China Address before: 528400 2nd floor, longhuan Road, Chengnan 5th Road, South District, Zhongshan City, Guangdong Province Patentee before: Zhongshan Shengnuo Instrument Equipment Co.,Ltd. Country or region before: China |
|
| CP03 | Change of name, title or address |