首页> 外文期刊>International journal of applied ceramic technology >Influence of SiO_2 Addition on the Dielectric Properties and Microstructure of (Ba_(0.96)Ca_(0.04))(Ti_(0.85)Zr_(0.15))O_3 Ceramics
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Influence of SiO_2 Addition on the Dielectric Properties and Microstructure of (Ba_(0.96)Ca_(0.04))(Ti_(0.85)Zr_(0.15))O_3 Ceramics

机译:SiO_2的添加对(Ba_(0.96)Ca_(0.04))(Ti_(0.85)Zr_(0.15))O_3陶瓷介电性能和微观结构的影响

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摘要

In this study, the effect of SiO_2 doping on the sintering behavior, microstructure, and dielectric properties of BaTiO_3-based ceramics was investigated. Silica was added to (Ba_(0.96)Ca_(0.04))(Ti_(0.85)Zr_(0.15))O_3 (BCTZ) powder prepared using the solid-state method. SiO_2-doped BCTZ ceramics with a high density and a uniform grain size were obtained and sintered at 1220℃ in a reducing atmosphere. A second phase (BaTiSiO_5) existed in samples when SiO_2 was added in excess of 1%. The amount of the second phases was observed to increase as the number of SiO_2 additives increased. It was found that BCTZ ceramics sintered with SiO_2 are helpful in reducing the sintering temperature for a typical thick film and MLCC applications. However, there were disadvantageous effects on the dielectric properties with mere addition of SiO_2 addition (3% and 5%) due to higher formation of BaTiSiO_5. Doping with a small amount of silica can improve the sintering and dielectric properties of BCTZ ceramics. In addition, to understand the effect of the BaTiSiO_5 phase on the dielectric properties of BCTZ ceramics, the BaTiSiO_5 composition was synthesized from individual BaCO_3, TiO_2, and SiO_2 powders using conventional solid-state methods. X-ray diffraction results show the presence of mainly the crystalline phase, BaTiSiO_5, in the sintered ceramics.
机译:本文研究了SiO_2掺杂对BaTiO_3基陶瓷烧结行为,微观结构和介电性能的影响。将二氧化硅添加到使用固态方法制备的(Ba_(0.96)Ca_(0.04))(Ti_(0.85)Zr_(0.15))O_3(BCTZ)粉末中。得到了高密度,晶粒尺寸均匀的SiO_2掺杂的BCTZ陶瓷,并在还原气氛中于1220℃烧结。当加入超过1%的SiO_2时,样品中存在第二相(BaTiSiO_5)。观察到第二相的量随着SiO 2添加剂数量的增加而增加。已发现,用SiO_2烧结的BCTZ陶瓷有助于降低典型厚膜和MLCC应用的烧结温度。然而,由于较高的BaTiSiO_5的形成,仅添加SiO_2(3%和5%)对介电性能有不利影响。掺杂少量的二氧化硅可以改善BCTZ陶瓷的烧结和介电性能。此外,为了了解BaTiSiO_5相对BCTZ陶瓷介电性能的影响,使用常规的固态方法由单独的BaCO_3,TiO_2和SiO_2粉末合成了BaTiSiO_5组成。 X射线衍射结果表明,在烧结陶瓷中主要存在结晶相BaTiSiO_5。

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    Department of Materials Engineering, National Pingtung University of Science and Technology, Pingtung, Taiwan, Republic of China;

    Department of Materials Engineering, National Pingtung University of Science and Technology, Pingtung, Taiwan, Republic of China;

    Department of Materials Engineering, National Pingtung University of Science and Technology, Pingtung, Taiwan, Republic of China;

    Institute of Materials Science, National Yunlin University of Science and Technology, Yunlin, Taiwan, Republic of China;

    Department of Electrical Engineering, National Cheng Kung University, Tainan, Taiwan, Republic of China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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  • 入库时间 2022-08-17 13:43:40

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