| ZnO-B_2O_3掺杂陶瓷的微观结构和微波介电性能 |
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| 引用本文： | 刘立新,张玉华,陆茵,刘欣宁.ZnO-B_2O_3掺杂陶瓷的微观结构和微波介电性能[J].粉末冶金工业,2017,27(5). |
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| 作者姓名： | 刘立新 张玉华 陆茵 刘欣宁 |
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| 作者单位： | 河南工业职业技术学院机械工程学院,河南南阳,473009 |
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| 摘 要： | 研究了ZnO-B_2O_3(ZB_2)对(Ca_(0.254)Li_(0.19)Sm_(0.14))TiO_3陶瓷的烧结行为和微波介电性能的影响。结果表明:ZnO-B_2O_3添加质量分数为3%时,试样的相对密度达到最大值;烧结温度从1 300℃降低到1 100℃时,试样的微波介电性能没有衰减。添加3%ZB_2(质量分数)的(Ca_(0.254)Li_(0.19)Sm_(0.14))TiO_3陶瓷在1 100℃烧结3 h呈现出较好的微波介电性能,介电常数ε_r=108.2,品质因数Q_f=6 545 GHz,共振频率温度系数τf=6.5×10~(-6)/℃,表明ZB_2是一种有效改善(Ca_(0.254)Li_(0.19)Sm_(0.14))TiO_3陶瓷致密性和微波介电性能的烧结助剂。
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| 关 键 词： | ZnO-B2O3 微波介电性能 致密化 陶瓷 烧结行为 |
Microstructure and microwave dielectric properties of ZnO-B2O3 doped ceramics |
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| LIU Li-xin,ZHANG Yu-hua,LU Yin,LIU Xin-ning.Microstructure and microwave dielectric properties of ZnO-B2O3 doped ceramics[J].Powder Metallurgy Industry,2017,27(5). |
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| Authors: | LIU Li-xin ZHANG Yu-hua LU Yin LIU Xin-ning |
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| Abstract: | The effects of ZnO-B2O3(ZB2) on the sintering behavior and microwave dielectric properties of (Ca0.254Li0.19Sm0.14)TiO3 ceramics were investigated. Results show that the relative densities of the specimens reach the maximum value when adding 3％ZB2(mass percent). The sintering temperature is lowered from 1300℃to 1100℃without degradation of the microwave dielectric properties. The(Ca0.254Li0.19Sm0.14 )TiO3 ceramic with 3％ZB2(mass percent)sintered at 1100 ℃ for 3 h shows good microwave dielectric properties,which is εr=108.2,Qf=6545 GHz,andτf=6.5×10-6/℃,indicating that ZB2 is an effective sintering aid to improve the den-sification and microwave dielectric properties of(Ca0.254Li0.19Sm0.14)TiO3 ceramics. |
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| Keywords: | ZnO-B2O3 microwave dielectric property densification ceramic sintering behavior |
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