CN111423228A - 一种高储能效率陶瓷及其制备方法 - Google Patents

一种高储能效率陶瓷及其制备方法 Download PDF

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CN111423228A
CN111423228A CN202010352371.1A CN202010352371A CN111423228A CN 111423228 A CN111423228 A CN 111423228A CN 202010352371 A CN202010352371 A CN 202010352371A CN 111423228 A CN111423228 A CN 111423228A
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李玲霞
杨盼
彭伟
徐康力
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Abstract

本发明公开了一种高储能效率陶瓷，化学表达式为(1‑x)(Ba0.85Ca0.15)(Zr0.1Ti0.9)O3‑xBi(Mg0.5Ti0.5)O3，其中x为0.05～0.2。先将BaCO3、CaCO3、ZrO、TiO2、Bi2O3及MgO粉料按照化学计量比混合，制备陶瓷粉料，再经压力成型、排胶后，于1350～1450℃烧结，制得高储能效率陶瓷。本发明储能效率为88.8％～98.1％，可作为储能元件应用于相关领域。

Description

一种高储能效率陶瓷及其制备方法
技术领域
本发明属于一种以成分为特征的陶瓷组合物，特别涉及一种高储能效率陶瓷及其制备方法。
背景技术
由于储能陶瓷具有功率密度高、充放电速度快、输出电流大等优势，逐渐成为脉冲功率系统中的关键元件。陶瓷的储能效率作为衡量储能性能的关键因素之一，严重影响了储能陶瓷在脉冲功率系统中的应用。储能效率越高，意味着对能量的利用率越高。然而，现有的储能陶瓷很难在工作压电范围内保持较高的储能效率，因此急需研发一种高储能效率的储能陶瓷。
发明内容
本发明的目的，是为克服现有储能陶瓷储能效率低的缺点，提供一种高储能效率的储能陶瓷材料。
本发明通过如下技术方案予以实现。
一种高储能效率陶瓷，化学表达式为(1-x)(Ba0.85Ca0.15)(Zr0.1Ti0.9)O3-xBi(Mg0.5Ti0.5)O3，其中x为0.05～0.2。
该高储能效率陶瓷的制备方法，具有如下步骤：
(1)制备(1-x)(Ba0.85Ca0.15)(Zr0.1Ti0.9)O3-xBi(Mg0.5Ti0.5)O3，x为0.05～0.2陶瓷粉料
a.将BaCO3粉料、CaCO3粉料、ZrO粉料、TiO2粉料、Bi2O3以及MgO粉料按照化学计量比进行混合；
b.将混合后的粉料球磨12小时，球磨介质为去离子水或无水乙醇；
c.将球磨后的粉料在800～1000℃下预烧2小时，从而形成(1-x)(Ba0.85Ca0.15)(Zr0.1Ti0.9)O3-xBi(Mg0.5Ti0.5)O3主相；
d.向(1-x)(Ba0.85Ca0.15)(Zr0.1Ti0.9)O3-xBi(Mg0.5Ti0.5)O3粉料中外加5wt.％～12.5wt.％的石蜡，之后在200℃下炒蜡15分钟，制得(1-x)(Ba0.85Ca0.15)(Zr0.1Ti0.9)O3-xBi(Mg0.5Ti0.5)O3，x为0.05～0.2陶瓷粉料；
(2)成型
称取步骤(1)的(1-x)(Ba0.85Ca0.15)(Zr0.1Ti0.9)O3-xBi(Mg0.5Ti0.5)O3，x为0.05～0.2陶瓷粉料放入模具中，压制成型为陶瓷生坯；
(3)排胶
将步骤(2)压制成型后的陶瓷生坯放入低温炉中进行排胶，排胶温度400～700℃；
(4)烧结
将步骤(2)排胶后的陶瓷生坯于1350～1450℃进行烧结，保温时间为4小时，制得(1-x)(Ba0.85Ca0.15)(Zr0.1Ti0.9)O3-xBi(Mg0.5Ti0.5)O3，x为0.05～0.2高储能效率陶瓷。
所述步骤(1)的预烧升温速率为3～5℃/min。
所述步骤(2)的陶瓷生坯压制成型过程中采用的压力为4MPa。
所述步骤(4)的烧结升温速率为5℃/min。
所述步骤(4)的烧结温度为1350℃。
本发明制备的(1-x)(Ba0.85Ca0.15)(Zr0.1Ti0.9)O3-xBi(Mg0.5Ti0.5)O3，其中x为0.05～0.2的储能陶瓷，储能效率为88.8％～98.1％，可作为储能元件应用于相关领域。
附图说明
图1为本发明制备的(1-x)(Ba0.85Ca0.15)(Zr0.1Ti0.9)O3-xBi(Mg0.5Ti0.5)O3，其中x为0.05～0.2的高储能效率陶瓷的储能效率随x的变化关系图。
图2为实施例3制备的0.85(Ba0.85Ca0.15)(Zr0.1Ti0.9)O3-0.15Bi(Mg0.5Ti0.5)O3高储能效率陶瓷在小于击穿电场强度下的储能效率图。
具体实施方式
下面通过具体实施例对本发明作进一步描述。
实施例中所用的BaCO3粉料、CaCO3粉料、ZrO粉料、TiO2粉、Bi2O3以及MgO，均为市售分析纯原料。
实施例1
(1)制备0.95(Ba0.85Ca0.15)(Zr0.1Ti0.9)O3-0.05Bi(Mg0.5Ti0.5)O3陶瓷粉料
a.将BaCO3粉料、CaCO3粉料、ZrO粉料、TiO2粉、Bi2O3以及MgO粉料按照化学计量比进行混合；
b.将混合后的粉料球磨12小时，球磨介质为去离子水或无水乙醇；
c.将球磨后的粉料预烧2小时，预烧升温速率为5℃/min，从而形成0.95(Ba0.85Ca0.15)(Zr0.1Ti0.9)O3-0.05Bi(Mg0.5Ti0.5)O3主相；
d.向0.95(Ba0.85Ca0.15)(Zr0.1Ti0.9)O3-0.05Bi(Mg0.5Ti0.5)O3粉料中加入5wt.％的石蜡，之后在200℃下炒蜡15分钟，制得0.95(Ba0.85Ca0.15)(Zr0.1Ti0.9)O3-0.05Bi(Mg0.5Ti0.5)O3陶瓷粉料。
(2)制备0.95(Ba0.85Ca0.15)(Zr0.1Ti0.9)O3-0.05Bi(Mg0.5Ti0.5)O3陶瓷
称取0.15g0.95(Ba0.85Ca0.15)(Zr0.1Ti0.9)O3-0.05Bi(Mg0.5Ti0.5)O3粉料放入模具中，采用压力为4MPa，压制成型为陶瓷生坯。
(3)排胶
将压制成型后的陶瓷生坯放入低温炉中进行排胶，排胶温度700℃。
(4)烧结
排胶完成后，于1350℃进行烧结，烧结升温速率为5℃/min，保温时间为4小时，制得0.95(Ba0.85Ca0.15)(Zr0.1Ti0.9)O3-0.05Bi(Mg0.5Ti0.5)O3储能陶瓷。
实施例1的储能陶瓷储能效率为88.89％，说明其可以应用于脉冲功率系统。
实施例2
实施例2制备工艺完全相同于实施例1，只是x为0.125，制备的储能陶瓷储能效率为98.15％，说明其可以应用于脉冲功率系统。
实施例3
实施例3制备工艺完全相同于实施例1，只是x为0.15，制备的储能陶瓷储能效率为在127kV/cm电场以下工作时，仍然具有大于97％的储能效率，说明其可以应用于脉冲功率系统。
图1为本发明制备的(1-x)(Ba0.85Ca0.15)(Zr0.1Ti0.9)O3-xBi(Mg0.5Ti0.5)O3，其中x为0.05～0.2的高储能效率陶瓷的储能效率随x的变化关系图。其储能效率均是在各自击穿电场下测试得出。图中插图则为高储能效率陶瓷击穿电场强度随x的变化关系。图1表明，本发明制备的高储能效率陶瓷储能效率为88.8％～98.1％，可作为储能元件应用于脉冲功率系统。
图2则表明，实施例3制备的0.85(Ba0.85Ca0.15)(Zr0.1Ti0.9)O3-0.15Bi(Mg0.5Ti0.5)O3储能陶瓷在击穿电场电场以下工作时，仍然具有大于97％的储能效率。

Claims (5)

1.一种高储能效率陶瓷，化学表达式为(1-x)(Ba0.85Ca0.15)(Zr0.1Ti0.9)O3-xBi(Mg0.5Ti0.5)O3，其中x为0.05～0.2。
该高储能效率陶瓷的制备方法，具有如下步骤：
(1)制备(1-x)(Ba0.85Ca0.15)(Zr0.1Ti0.9)O3-xBi(Mg0.5Ti0.5)O3，x为0.05～0.2陶瓷粉料
a.将BaCO3粉料、CaCO3粉料、ZrO粉料、TiO2粉料、Bi2O3以及MgO粉料按照化学计量比进行混合；
b.将混合后的粉料球磨12小时，球磨介质为去离子水或无水乙醇；
c.将球磨后的粉料在800～1000℃下预烧2小时，从而形成(1-x)(Ba0.85Ca0.15)(Zr0.1Ti0.9)O3-xBi(Mg0.5Ti0.5)O3主相；
d.向(1-x)(Ba0.85Ca0.15)(Zr0.1Ti0.9)O3-xBi(Mg0.5Ti0.5)O3粉料中外加5wt.％～12.5wt.％的石蜡，之后在200℃下炒蜡15分钟，制得(1-x)(Ba0.85Ca0.15)(Zr0.1Ti0.9)O3-xBi(Mg0.5Ti0.5)O3，x为0.05～0.2陶瓷粉料；
(2)成型
称取步骤(1)的(1-x)(Ba0.85Ca0.15)(Zr0.1Ti0.9)O3-xBi(Mg0.5Ti0.5)O3，x为0.05～0.2陶瓷粉料放入模具中，压制成型为陶瓷生坯；
(3)排胶
将步骤(2)压制成型后的陶瓷生坯放入低温炉中进行排胶，排胶温度400～700℃；
(4)烧结
将步骤(2)排胶后的陶瓷生坯于1350～1450℃进行烧结，保温时间为4小时，制得(1-x)(Ba0.85Ca0.15)(Zr0.1Ti0.9)O3-xBi(Mg0.5Ti0.5)O3，x为0.05～0.2高储能效率陶瓷。
2.根据权利要求1所述的一种高储能效率陶瓷，其特征在于，所述步骤(1)的预烧升温速率为3～5℃/min。
3.根据权利要求1所述的一种高储能效率陶瓷，其特征在于，所述步骤(2)的陶瓷生坯压制成型过程中采用的压力为4MPa。
4.根据权利要求1所述的一种高储能效率陶瓷，其特征在于，所述步骤(4)的烧结升温速率为5℃/min。
5.根据权利要求1所述的一种高储能效率陶瓷，其特征在于，所述步骤(4)的烧结温度为1350℃。
CN202010352371.1A 2020-04-28 2020-04-28 一种高储能效率陶瓷及其制备方法 Pending CN111423228A (zh)

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Application publication date: 20200717