CN1025703C - 一种大功率压电陶瓷材料 - Google Patents

一种大功率压电陶瓷材料 Download PDF

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Publication number
CN1025703C
CN1025703C CN90108248A CN90108248A CN1025703C CN 1025703 C CN1025703 C CN 1025703C CN 90108248 A CN90108248 A CN 90108248A CN 90108248 A CN90108248 A CN 90108248A CN 1025703 C CN1025703 C CN 1025703C
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Prior art keywords
lead
niobate
piezoelectric ceramic
piezoelectric transformer
magnesio
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CN90108248A
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CN1061111A (zh
Inventor
邝安祥
周桃生
何昌鑫
柴荔英
谢菊芳
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Hubei University
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Hubei University
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Priority to US07/782,030 priority patent/US5173460A/en
Priority to EP91402899A priority patent/EP0484231A1/en
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    • 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
    • C04B35/497—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 based on solid solutions with lead oxides
    • C04B35/499—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 based on solid solutions with lead oxides containing also titanates
    • 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

Abstract

本发明是对铌镁锆钛酸铅和铌锰锆钛酸铅进行了最佳组合和改性，从而获得在大功率使用下性能优异的铌镁酸铅，铌锰酸铅，锆酸铅，钛酸铅(PMMN)四元系压电陶瓷材料。解决了大功率压电变压器材料问题。用本发明制作的压电变压器，其单片(100×25×3.6)输出功率可达65W，正常连续输出50W。该材料还具有工艺简单，烧结温度宽而低，瓷质致密和成品率高等特点，在实际使用中已获满意效果。

Description

本发明属于压电陶瓷材料。
用压电陶瓷材料制造压电陶瓷变压器，在高压领域内显示出具有高升压比，体积小，重量轻，不怕高压击穿，不怕短路烧毁，不用铜铁等金属材料，不怕受潮以及不引起电磁干扰等优点，引起人们极大重视，目前研究出的二元系（PZT），三元系（PCM，PSM）及其改性压电陶瓷材料的性能在逐步改善，但其温度特性，机电偶合系数，机械品质因数和机械强度等性能还不能满足大功率输出要求，难以实现单片输出大于40W的压电陶瓷变压器。例如日本住友电气公司制作的压电变压器最大输出功率为40W。（见川田雄彦，电子展望（日），7（1970），5;67）中国山东大学采用改性PCM（铌镁锆钛酸铅）材料制作的压电变压器最大输出功率为19W。（朱凤珠，物理，2（1973），4：183-190）。清华大学采用PSM（锰锑锆钛酸铅）材料制作的压电变压器最大输出功率5.6W。
（Ferrcelectrics，28（1980）402-406）
本发明的目的是提供一种较理想的压电陶瓷材料，在温度特性，机电偶合系数，机械品质因数和机械强度等性能上都有较大提高，以满足制造大功率输出的压电变压器的要求。
本发明是这样实现的，综合具有不同特性的铌镁锆钛酸铅三元系（PCM）材料和铌锰锆钛酸铅三元系（PMN）材料，组成铌镁酸铅、铌锰酸铅、锆酸铅和钛酸铅（PMMN）的四元系压电陶瓷，其组成为：
Pb（Mg1/3Nb2/3）A（Mn1/3Nb2/3）BTiCZrDO3
其中A＝0.025-0.125    B＝0.025-0.125
C＝0.375-0.475    D＝0.375-0.475
为了进一步改善材料温度稳定性，在上述材料基础上，采用添加CeO2及Sr取代部分铅进行改性，其添加和取代量分别为：
0.1＜CeO2＜0.5（Wt%）
2＜Sr＜10（克原子%）
下面以实施例对本发明进一步说明，选
选取A＝0.059 B＝0.066 C＝0.459 D＝0.416 CeO2＝0.2Wt%，Sr＝2克原子%作为PMMN-1配方，按化学配比称料，在球磨机内混合，混合时间为24小时;取出后进行预烧，预烧温度为900℃，保温2小时。预烧后粉料已成为上述配方的金属化合物块料。对预烧料用球磨机细磨48小时后，加入一定量粘结剂（如聚乙烯醇），以3000kg/cm3压力成型并进行烧结。烧结温度较宽，可在1190℃-1250℃烧结1-2小时，烧结完毕就上银电极进行极化，极化电压为4KV/mm，时间为10分钟，24小时后进行性能测试。
PMMN-1配方的压电陶瓷材料性能见表1
表一，PMMN-1配方压电陶瓷材料的性能参数。
表见文后
PMMN-1配方的压电陶瓷材料输出功率-负载阻抗特性见图1;转换功率，波节温度-负载特性见图2;谐振频率-环境温度特性见图3。该材料机械强度大，抗拆力为1400kg/cm2左右。
以上测试结果是在单片尺寸100×25×3.6m条件下测得的。
本发明与其他压电陶瓷材料性能比较见表2。
表2见文后
用表2材料制成的压电变压器性能比较见表3压电变压器主要性能比较：
从以上结果看出本发明的压电陶瓷材料，其温度稳定性，机电偶合系数，机械品质因数，机械强度等性能都有较大提高，所以适合制造大功率压电变压器，在单片尺寸为100×25×3.6mm3条件下最大输 出达65W，正常连续输出50W。该材料还可适用于其他大功率压电器件等场合。
最大输出功率（W）    空载升压比（AC）    转换效率（%）    尺寸（mm）
美国    ＜5
日本    ≤40    300    80    110×30×5
山东大学    ＜19    450    88    120×30×2
清华大学    ＜5.7    150-200    85    120×26×3
湖北大学    65    780    92    100×25×3.6
表1
ρ d33d31g33g31SE 11SD 11
KpK31K33QmεT 33/ε33tgδ
g/cm310-12C/N 10-3V·m/N 10-12m2/N
0.64    0.31    0.73    3500    1280    0.002    7.8    311    -110    30.1  -10.7  11.4  10.3
表2
机电偶    机械品    介电    介质    居里
密度
合系数    质因数    常数    损耗    温度
材料性能
ρvg/cm3RPQmε33/ε0tg TC℃
研究单位
湖北大学
7.8    0.64    3500    1280    0.002    350
PMMN
山东大学
7.88    0.60    1100    1700    0.007    300±10
PCM-98
清华大学
7.62    0.64    2825    1394    0.0075    310
PSM
芝浦电气
7.7    0.52    560    900    310
TPM-310
住友电气
7.55    0.56    500    1000    300
PZT（日本）

Claims (2)

1、一种大功率压电陶瓷变压器材料是由铌镁酸铅，铌锰酸铅，钛酸铅，锆酸铅组成的四元系材料(PMMN)，其特征在于组成为：
Pb(Mg1/3Nb∶2/3)A(Mn1/3Nb2/3)BTicZrDO3
其中A=0.025-0.125  B=0.025-0.125
    C=0.375-0.475  D=0.375-0.475
2、根据权利要求1所述的压电陶瓷变压器材料，其特征在于添加一定量CeO2及Sr进行改性，其含量为：
0.1＜CeO2＜0.5（重量%）
2＜Sr＜10（克分子%）
CN90108248A 1990-10-29 1990-10-29 一种大功率压电陶瓷材料 Expired - Fee Related CN1025703C (zh)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN90108248A CN1025703C (zh) 1990-10-29 1990-10-29 一种大功率压电陶瓷材料
US07/782,030 US5173460A (en) 1990-10-29 1991-10-24 Piezoelectric ceramic material with large power output ability
EP91402899A EP0484231A1 (en) 1990-10-29 1991-10-29 A piezoelectric ceramic material with large power output ability

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN90108248A CN1025703C (zh) 1990-10-29 1990-10-29 一种大功率压电陶瓷材料

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EP0747976B1 (en) * 1994-12-27 2000-06-07 Seiko Epson Corporation Thin-film piezoelectric element, process for preparing the same, and ink jet recording head made by using said element
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US5173460A (en) 1992-12-22
EP0484231A1 (en) 1992-05-06

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