以95.5ZnO-0.5V2 O5-2.0Bi2 O3-0.5Mn3 O4-0.5Y2 O3-0.5Cr2 O3-0.5Co2 O3为配方制备压敏电阻,研究了烧结温度对该体系微观结构及电学性能的影响.研究表明,随着烧结温度升高,ZnO压敏电阻的击穿场强E1mA逐渐减小,非线性系数α、损耗角正切值tanδ以及相对介电常数εr均先增大再减小.当烧结温度为910℃时,压敏电阻的微观结构均匀,晶界清晰,有大量八面体的尖晶石相生成,且分布均匀.该烧结温度下所制备的压敏电阻的非线性系数α达到最大值27,击穿场强E1mA为3456.5 V/cm,工作频率105 Hz条件下该电阻的损耗角正切值tanδ为0.29.
The effect of sintering temperatures on the microstructure,electrical properties and loss performance of 95.5ZnO-0.5V2 O5-2.0Bi2 O3-0.5Mn3 O4-0.5Y2 O3-0.5Cr2 O3-0.5Co2 O3 (all in mol%)based on the low-tempera-ture sintering Zn-Bi system had been systematically studied,and the loss performance had been discussed care-fully.Meanwhile,we had put forward idea of the restriction impacts of the loss performance of ZnO varistors. The experiments showed that,when the sintering temperature was 910 ℃,the following characteristics ob-tained:The microstructure of ZnO varistor was quite uniform with distinguishable grain boundaries,and a large amount of spinel phases distributed uniformly could be found clearly.The nonlinear coefficientαwas 27 and breakdown electrical field E1mA was 3456.5 V/cm.The study of dielectric properties showed that the dielectric loss tan δ was between 0.19 and 0.29,which was a relatively high value.In this paper,we had explained this phenomenon in detail.
参考文献
| [1] | Choon-W. Nahm.Low-temperature sintering effect on varistor properties of ZnO-V_2O_5-MnO2-Nb_2O_5-Bi_2O_3 ceramics[J].CERAMICS INTERNATIONAL,20132(2):2117-2121. |
| [2] | 刘建科;王秀峰;陈永佳.Pr掺杂和Pr-Y共掺杂Zn-Bi系压敏电阻性能的研究[J].功能材料,2013(z2):316-320. |
| [3] | Kim YH.;Nawata M.;Kawamura H..THE EFFECT OF CR2O3 ADDITIVE ON THE ELECTRICAL PROPERTIES OF ZNO VARISTOR[J].Journal of Materials Science,19976(6):1665-1670. |
| [4] | Choon-W. Nahm.Varistor properties and aging behavior of ZnO-V_(2)O_(5)-Mn_(3)O_(4) ceramics with sintering process[J].Journal of Materials Science. Materials in Electronics,20118(8):1010-1015. |
| [5] | Choon-W. Nahm.Effect of dopant (Al, Nb, Bi, La) on varistor properties of ZnO-V_2O_5-MnO_2-Co_3O_4-Dy_2O_3 ceramics[J].CERAMICS INTERNATIONAL,20103(3):1109-1115. |
| [6] | 冯雪丽;刘向春;周凯旋;杨洋;左琛光.ZnO-MgO-TiO2-SnO2系高频介电陶瓷的制备与介电性能[J].功能材料,2014(23):23105-23109. |
| [7] | 周东祥;章天金;龚树萍.低压氧化锌压敏陶瓷的显微结构及其电学性能的研究[J].功能材料,2000(1):66-68. |
| [8] | 徐东;程晓农;赵国平;徐红星;施利毅.烧结温度对氧化锌压敏瓷显微组织和电性能的影响[J].河南科技大学学报（自然科学版）,2009(6):8-11. |
| [9] | 侯清健;徐国跃;赵毅;唐敏.烧结温度和热处理对ZnO压敏陶瓷的影响[J].电瓷避雷器,2004(5):36-38,42. |
| [10] | 严继康;甘国友;陈海芳;张小文;孙加林.烧结温度对TiO2压敏陶瓷结构和性能的影响[J].压电与声光,2008(3):332-334. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%