Y2O3和CeO2共掺杂对zno - bi2o3基压敏电阻微观结构和电性能的影响

IF 5.6 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2025-08-01 DOI:10.1016/j.ceramint.2025.04.355

Yunfei Zhu , Yanghai Gui , Yuansheng Tu , Hai Huang , Shuaishuai Zhao

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引用次数: 0

摘要

采用固相烧结法制备了Y2O3和CeO2共掺杂zno - bi2o3基压敏电阻。采用XRD、FE-SEM和EDS对ZnO压敏电阻的相组成、微观结构和元素分布进行了表征。分析了ZnO压敏电阻的微观结构与电性能之间的关系。实验结果表明，Y2O3和CeO2通过协同作用改善了电压梯度和非线性系数。当掺量为0.20 mol% Y2O3和0.08 mol% CeO2时，ZnO压敏电阻的综合电性能最佳，电压梯度E1 mA = 319 V/mm，漏电流密度JL = 0.67 μA·cm−2，非线性系数α = 36，残余电压比K = 1.79，老化系数Kct = 0.860。

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Effect of Y2O3 and CeO2 co-doping on microstructure and electrical properties of ZnO-Bi2O3-based varistors

ZnO-Bi₂O₃-based varistors co-doped with Y₂O₃ and CeO₂ were prepared by the solid-phase sintering method. The phase composition, microstructure, and elemental distribution of ZnO varistors were characterized by XRD, FE-SEM, and EDS. The relationship between microstructure and electrical properties of ZnO varistors is analyzed. The experimental results show that Y₂O₃ and CeO₂ improve the voltage gradient and nonlinear coefficient through synergistic interaction. At the doped ratios of 0.20 mol% Y₂O₃ and 0.08 mol% CeO₂, the best comprehensive electrical properties of ZnO varistors can be obtained with voltage gradient E_{1 mA} = 319 V/mm, leakage current density J_L = 0.67 μA·cm⁻², nonlinear coefficient α = 36, residual voltage ratio K = 1.79, and aging coefficient K_ct = 0.860.

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来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.