Metal oxide varistors: from microstructure to macro-characteristics

Description

Completely up-to-date, this is the first comprehensive monograph on metal oxide varistors with a focus on microstructure, conduction mechanisms, device failures, ageing, additive impacts and future varistor systems. As such, it covers the fundamentals and applications of metal oxide varistors, including their macro-characteristics, microstructural properties and the device-internal physical and electrical mechanisms. The author reflects on the achievements made in varistor research and propose new approaches to analyze and predict the macro-characteristics, employing such methods as micro-contact measurements and numerical simulations. In addition, he looks at future directions for varistor research, such as ZnO varistors with a high voltage gradient and low residual voltage and further varistor types based on TiO2 and SnO2.  Read more... Abstract: Completely up-to-date, this is the first comprehensive monograph on metal oxide varistors with a focus on microstructure, conduction mechanisms, device failures, ageing, additive impacts and future varistor systems. As such, it covers the fundamentals and applications of metal oxide varistors, including their macro-characteristics, microstructural properties and the device-internal physical and electrical mechanisms. The author reflects on the achievements made in varistor research and propose new approaches to analyze and predict the macro-characteristics, employing such methods as micro-contact measurements and numerical simulations. In addition, he looks at future directions for varistor research, such as ZnO varistors with a high voltage gradient and low residual voltage and further varistor types based on TiO2 and SnO2 Content: Introduction of Varistor Ceramics -- Conduction Mechanisms of ZnO Varistors -- Tuning Electrical Characteristics of ZnO Varistors -- Microstructural Electrical Characteristics of ZnO Varistors -- Simulation on Varistor Ceramics -- Breakdown Mechanism and Energy Absorption Capability of ZnO Varistor -- Electrical Degradation of ZnO Varistors -- Praseodymium/Vanadium/Barium-Based ZnO Varistor Systems -- Fabrications of Low-Voltage ZnO Varistors -- Titanium-Based Dual-function Varistor Ceramics -- Tin Oxide Varistor Ceramics of High Thermal Conductivity -- WO3-Based Varistor Ceramics of Low Breakdown Voltage.