The invention discloses a Ba1-xSmxNbyTi0.9-yZr0.1O3 base dielectric ceramic material and a preparation method thereof, belonging to the dielectric ceramic technology. The Ba1-xSmxNbyTi0.9-yZr0.1O3 based dielectric ceramic material comprises the following components and quality content: Ba1-xSmxNbyTi0.9-yZr0.1O3:99.6%, wherein, x = 0 ~ 0.01, y = 0 ~ 0.016; MnO2: (0.1 ~ 0.3)%; MgO: (0.1 ~ 0.3)%. The method of process: BaCO3, TiO2, ZrO2, Sm2O3 and Nb2O5 in Ba1-xSmxNbyTi0.9-yZr0.1O3 molar ratio, then the mixing and grinding ball and deionized water are mixed according to the mass ratio of ball milling, the milled slurry pre drying, synthesis of Ba1-xSmxNbyTi0.9-yZr0.1O3, in the pre accession to the MnO2 and MgO composite materials by weight percentage, the ingredients with the ball and the deionized water by mass mixing ball milling, drying. Then, the Ba1-xSmxNbyTi0.9-yZr0.1O3 based dielectric ceramic materials were prepared by adding polyvinyl alcohol water solution, mixing, sieving, granulation, pressing and sintering. The invention has the advantages that the Ba1-xSmxNbyTi0.9-yZr0.1O3 based dielectric ceramic has the advantages of fine crystal grain, high dielectric constant, low dielectric change rate and good repeatability of materials.
【技术实现步骤摘要】
本专利技术涉及一种Ba1-xSmxNbyTi09-yZr01O3基电介质陶瓷材料及其制备方法,属于电介质陶瓷技术。
技术介绍
国内外对低介电温度变化率陶瓷电容器的研究十分活跃,主要通过改变材料配方、工艺,掺杂某些其它离子达到材料改性和无铅化的目的。有的研究了Bi2O3和CuO掺杂对Ba06Sr0.4TiO3陶瓷性能的影响,研究结果显示部分试样表现了较低的介电温度变化率,但介电常数比较低,均在2000以下,有些甚至还不到1000(H.T.Jiang,J.W.Zhai,X.J.Chou,etal,InfluenceofBi2O3andCuOadditiononlow-temperaturesinteringanddielectricpropertiesofBa0.6Sr0.4TiO3ceramics,MaterialsResearchBulletin,44(2009):566-570);有的研究了Mn/Y掺杂对Ba0.67Sr0.33TiO3陶瓷性能的影响,室温下显示了较高的介电常数,达到了4000以上,但其介电峰值温度刚好在室温左右,介电温度变化率很大(D.X.Yan,Z.P.Xu,X.L.Chen,etal,MicrostructureandelectricalpropertiesofMn/YcodopedBa0.67Sr0.33TiO3ceramics,CeramicsInternational,38(2012):2785-2791);O.P.Tha ...
【技术保护点】
一种Ba1‑xSmxNbyTi0.9‑yZr0.1O3基电介质陶瓷材料,其特征在于由下列成分及其质量含量组成:Ba1‑xSmxNbyTi0.9‑yZr0.1O3:99.6%,其中,x=0~0.01,y=0~0.016;MnO2:(0.1~0.3)%;MgO:(0.1~0.3)%。
【技术特征摘要】
1.一种Ba1-xSmxNbyTi0.9-yZr0.1O3基电介质陶瓷材料,其特征在于由下列成分及其质量含
量
组成:
Ba1-xSmxNbyTi0.9-yZr0.1O3:99.6%,其中,x=0~0.01,y=0~0.016;
MnO2:(0.1~0.3)%;
MgO:(0.1~0.3)%。
2.一种按权利要求1所述的Ba1-xSmxNbyTi0.9-yZr0.1O3基电介质陶瓷材料制备方法,其特
征在于包括以下过程:将BaCO3、TiO2、ZrO2、Sm2O3和Nb2O5按Ba1-xSmxNbyTi0.9-yZr0.1O3摩尔比进行配料,其中,x=0~0.01,y=0~0.016,然后将该配料与磨球及去离子水按质量比1∶
1∶2混合进行球磨4~6小时,将球磨后的料浆置于烘箱中经110~130℃烘干,然后将烘干料
在1040℃~1150℃下预合成2h~6h,之后随炉冷却到室温;将预合成料按质量百分比配...
【专利技术属性】
技术研发人员:李远亮,桑蓉栎,马雪刚,陈颖,崔志敏,张庆军,
申请(专利权)人:河北联合大学,
类型:发明
国别省市:河北;13
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