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Ce摻雜0.9Bi4Ti3O12 - 0.1K0.5Na0.5NbO3鉍層狀陶瓷結(jié)構(gòu)與性能研究
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景德鎮(zhèn)陶瓷學(xué)院,景德鎮(zhèn)陶瓷學(xué)院

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中圖分類(lèi)號(hào):

TQ174

基金項(xiàng)目:

國(guó)家自然科學(xué)基金項(xiàng)目（91022027，51262009）


Microstructure and Electrical Properties of Cerium- modified Bismuth-Layer 0.9Bi4Ti3O12 - 0.1K0.5Na0.5NbO3 Piezoelectric Ceramics
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Department of Material Science and Engineering, Jingdezhen Ceramic Institute,Department of Material Science and Engineering, Jingdezhen Ceramic Institute

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    摘要:

    采用傳統(tǒng)固相法制備了CeO2摻雜0.9Bi4Ti3O12–0.1K0.5Na0.5NbO3(BTO-KNN) 鉍層狀陶瓷材料。系統(tǒng)研究了CeO2摻雜對(duì)BTO-KNN基陶瓷物相結(jié)構(gòu)、微觀(guān)結(jié)構(gòu)以及電性能的影響. 結(jié)果表明：所有陶瓷樣品均為單一的鉍層狀結(jié)構(gòu)；BTO-KNN基陶瓷的壓電性能隨著CeO2的摻雜而顯著提高，損耗明顯降低。當(dāng)CeO2摻量為0.75 wt% 時(shí)，樣品具有最佳的電性能: d33=28 pC/N，介電損耗tan δ=0.29%，機(jī)械品質(zhì)因數(shù)Qm = 2897，剩余極化強(qiáng)度Pr = 11.83 μC/cm2，且居里溫度 Tc 高達(dá)615 ℃；研究結(jié)果表明CeO2摻雜0.9Bi4Ti3O12–0.1K0.5Na0.5NbO3鉍層狀陶瓷是種潛在的高溫陶瓷材料。

    Abstract:

    The cerium modified 0.9Bi4Ti3O12–0.1K0.5Na0.5NbO3 (BTO-KNN) piezoelectric ceramics were synthesized using conventional solid state processing. The effects of cerium addition on the microstructure and electrical properties of BTO-KNN ceramics had been investigated in details. It was found that the ceramics possess a pure phase of bismuth oxide layer-type structure. The piezoelectric properties of BTO-KNN–based ceramics were significantly enhanced after cerium doping. The piezoelectric constant d33, dielectric loss tan δ, mechanical quality factor Qm and remanent polarization Pr for the BTO-KNN ceramics with 0.75 wt% CeO2 modification were found to be 28 pC/N, 0.29%, 2897, 11.83 μC/cm2, respectively, together with the high Tc ( ~ 615 °C) and stable piezoelectric properties, demonstrating that the cerium modified BTO-KNN piezoelectric ceramics are the promising candidates for high–temperature applications.

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涂娜,江向平. Ce摻雜0.9Bi4Ti3O12 - 0.1K0.5Na0.5NbO3鉍層狀陶瓷結(jié)構(gòu)與性能研究[J].稀有金屬材料與工程,2016,45(2):292~296.[tuna, Jiang Xiangping. Microstructure and Electrical Properties of Cerium- modified Bismuth-Layer 0.9Bi4Ti3O12 - 0.1K0.5Na0.5NbO3 Piezoelectric Ceramics[J]. Rare Metal Materials and Engineering,2016,45(2):292~296.]
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  • 收稿日期:2014-01-08
  • 最后修改日期:2014-06-05
  • 錄用日期:2014-07-01
  • 在線(xiàn)發(fā)布日期: 2016-07-15
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