Attaining a Homogeneous Microstructure of a ZnO-Based Multilayer Varistor by Constrained Sintering

The performance of a ZnO‐based multilayer varistor (MLV) is affected strongly by the homogeneity of its microstructure. In this study, a homogeneous microstructure of ZnO‐based MLV was attained by using constrained sintering when nonreactive borosilicate glass +90 wt% alumina (Al2O3) was used as a c...

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Veröffentlicht in:Journal of the American Ceramic Society 2007-10, Vol.90 (10), p.3296-3298
Hauptverfasser: Lee, Wen-His, Chen, Wei-Ting, Su, Chi-Yi
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creator Lee, Wen-His
Chen, Wei-Ting
Su, Chi-Yi
description The performance of a ZnO‐based multilayer varistor (MLV) is affected strongly by the homogeneity of its microstructure. In this study, a homogeneous microstructure of ZnO‐based MLV was attained by using constrained sintering when nonreactive borosilicate glass +90 wt% alumina (Al2O3) was used as a constraining layer laminated on both sides of the multilayer ZnO‐based MLV. The mean grain size and the distribution of grain size of ZnO‐based MLVs are both reduced because by constrained sintering, an in‐plane tensile stress results from constrained sintering in the x–y plane of a multilayer device, which could modify the densification rate of the dielectric materials.
doi_str_mv 10.1111/j.1551-2916.2007.01854.x
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source Wiley Online Library Journals Frontfile Complete
subjects Aluminum oxide
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Ceramic sintering
Ceramics
Chemical industry and chemicals
Conductors, resistors (including thermistors, varistors, and photoresistors)
Constraints
Electronic devices
Electronic equipment and fabrication. Passive components, printed wiring boards, connectics
Electronics
Electrotechnical and electronic ceramics
Exact sciences and technology
Glass
Grain size
Materials science
Microstructure
Multilayers
Sintering
Technical ceramics
Varistors
title Attaining a Homogeneous Microstructure of a ZnO-Based Multilayer Varistor by Constrained Sintering
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