Sol-Gel Materials for Varistor Devices

Anas, S.; Mahesh, K. V.; Mathews, Jeen Maria; Ananthakumar, S.

doi:10.1007/978-3-319-50144-4_2

Cited by 9 publications

(1 citation statement)

References 96 publications

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“…At the first stages, a liquid phase is formed due to the dispersion and the homogeneous distribution of the dopants and contribute to the grain growth at the second stage. For the second stage at the end the of the process which is for in the beginning of the last stage, the grain growth, crystallization of the secondary and spinel phase, formation of the potential barriers, and retraction of the liquid phase from the two grain boundaries to the triple junctions are taking place [6]. The sintering process gives a microstructure with conductive ZnO grains and improves the grain boundaries with additive.…”

Section: Introductionmentioning

confidence: 99%

Conventional Sintering Effects on the Microstructure and Electrical Characteristics of Low-Voltage Ceramic Varistor

Ghazali¹,

Shaifudin²,

Abdullah³

et al. 2018

Sintering Technology - Method and Application

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Conventional, free or pressure less sintering is the simplest technique which involves heating of a powder compact, previously prepared at ambient temperatures, without applying any external pressure. It can be conducted with various box furnaces or tube furnaces under different atmospheres (oxidizing, reducing, inert, and vacuum). Through the use of this method, a highly applicable varistor can be mass produced. Varistors are of a particular interest for modern surge protection of over-voltage. Nowadays, ZnO ceramic varistors are most favorable in electronic industry due to their excellent electrical characteristics and high energy handling capabilities. By optimizing the method during sintering process, the number of potential barriers formed can be controlled thus improving the capability of the low-voltage varistor.

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Section: Introductionmentioning

confidence: 99%