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Conductive ceramic and sintering process thereof
The invention discloses a conductive ceramic. The conductive ceramic comprises, by weight, 55-90 parts of a conductive ceramic composite material, 1-5 parts of a binder and 0-5 parts of a sintering aid, the composition general formula of the conductive ceramic composite material is La(1-x)SrxTiO3.yZrO2, x and y are mole numbers of 0.5 <= x < 1, 0 < y <= 0.4, and x + y <= 1. The preparation method comprises the following steps: preparing nano-scale SrTiO3 powder by a sol-gel method, carrying out gas phase permeation rare earth treatment on the nano-scale SrTiO3 powder, carrying out drying, grinding and calcining by combining with Zr(NO3)4 to obtain a nano-scale La(1-x)SrxTiO3.yZrO2 powder composite material, the binder is polyvinyl alcohol and sintering aids being CaO, Y2O3 and TiO2. The invention also provides a sintering process of the conductive ceramic. The conductive ceramic prepared by the method has the characteristics of high compactness, high mechanical strength and low resistance, the temperature in the sintering process can be remarkably reduced, the energy consumption is reduced, and the conductive ceramic has a wide development prospect.
本发明公开了一种导电陶瓷，按重量份计含有55‑90份的导电陶瓷复合材料，1‑5份的粘结剂，0‑5份的烧结助剂，导电陶瓷复合材料的组成通式为：La(1‑x)SrxTiO3·yZrO2，其中x,y为摩尔数0.5≤x＜1，0＜y≤0.4，x+y≤1，首先通过溶胶‑凝胶法制备纳米级的SrTiO3粉末并对其进行气相扩渗稀土化处理，然后结合Zr（NO3）4进行烘干磨粉和煅烧，得到纳米级的La(1‑x)SrxTiO3·yZrO2粉末复合材料，所述粘结剂为聚乙烯醇，烧结助剂为CaO、Y2O3、TiO2，本发明还提供了这种导电陶瓷的烧结工艺，采用该方法制备的导电陶瓷具有高致密性、高机械强度、低电阻的特点，并可显著降低烧结过程中的温度，减少能耗，具有广阔的发展前景。
Conductive ceramic and sintering process thereof
The invention discloses a conductive ceramic. The conductive ceramic comprises, by weight, 55-90 parts of a conductive ceramic composite material, 1-5 parts of a binder and 0-5 parts of a sintering aid, the composition general formula of the conductive ceramic composite material is La(1-x)SrxTiO3.yZrO2, x and y are mole numbers of 0.5 <= x < 1, 0 < y <= 0.4, and x + y <= 1. The preparation method comprises the following steps: preparing nano-scale SrTiO3 powder by a sol-gel method, carrying out gas phase permeation rare earth treatment on the nano-scale SrTiO3 powder, carrying out drying, grinding and calcining by combining with Zr(NO3)4 to obtain a nano-scale La(1-x)SrxTiO3.yZrO2 powder composite material, the binder is polyvinyl alcohol and sintering aids being CaO, Y2O3 and TiO2. The invention also provides a sintering process of the conductive ceramic. The conductive ceramic prepared by the method has the characteristics of high compactness, high mechanical strength and low resistance, the temperature in the sintering process can be remarkably reduced, the energy consumption is reduced, and the conductive ceramic has a wide development prospect.
本发明公开了一种导电陶瓷，按重量份计含有55‑90份的导电陶瓷复合材料，1‑5份的粘结剂，0‑5份的烧结助剂，导电陶瓷复合材料的组成通式为：La(1‑x)SrxTiO3·yZrO2，其中x,y为摩尔数0.5≤x＜1，0＜y≤0.4，x+y≤1，首先通过溶胶‑凝胶法制备纳米级的SrTiO3粉末并对其进行气相扩渗稀土化处理，然后结合Zr（NO3）4进行烘干磨粉和煅烧，得到纳米级的La(1‑x)SrxTiO3·yZrO2粉末复合材料，所述粘结剂为聚乙烯醇，烧结助剂为CaO、Y2O3、TiO2，本发明还提供了这种导电陶瓷的烧结工艺，采用该方法制备的导电陶瓷具有高致密性、高机械强度、低电阻的特点，并可显著降低烧结过程中的温度，减少能耗，具有广阔的发展前景。
Conductive ceramic and sintering process thereof
一种导电陶瓷及其烧结工艺
HAN XIANGLONG (author)
2021-06-25
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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