Search for dissertations about: "Varistor"

Showing result 1 - 5 of 9 swedish dissertations containing the word Varistor.

  2. 1. Novel powder-coating solutions to improved micro-structures of ZnO based varistors, WC-Co cutting tools, and Co/Ni nano-phase films and sponges

    Author : Åsa Ekstrand; Mari-Ann Einarsrud; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Chemistry; Solution processing; powder coating; nano-phase materials; sintering process; varistor; WC–Co; cobalt; nickel; films; sponges; Kemi; Chemistry; Kemi; Inorganic Chemistry; Oorganisk kemi;

    Abstract : Solution chemistry is a versatile and powerful tool in the synthesis of designed, complex nano-level high-tech materials. Normally, the technique is considered too expensive for large-scale production of complex multi-component ceramic materials. READ MORE

  4. 2. Transient control in low-voltage power installation networks and electronic systems

    Author : Hong Tang; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physics; Transient protection; varistor; gas discharge protector; shielded cable; low-voltagepower installation; ATP-EMTP; spark gap; current generator; Fysik; Physics; Fysik; Electricity; Esp The Study Of Transients and Discharges; elektricitetslära; ssk studiet av transienter och urladdning;

    Abstract : Transient protection in a low-voltage power installation network and an electronic system isof vital importance since most of the activities of our society are very dependent on thereliability of low-voltage power installation networks and electronic systems. This thesisconcentrates upon several investigations which all deal with the evaluation and improvementof the protection measures of low-voltage power installation networks and electronic systemsagainst electrical transients. READ MORE

  5. 3. Nanoscale Characterisation of Barriers to Electron Conduction in ZnO Varistor Materials

    Author : Mattias Elfwing; Peter Lagerlöf; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; ZnO varistor material; TEM; SEM; EBIC; ESEM; electron holography; Materialvetenskap; Materials science; Teknisk materialvetenskap; Solid State Physics; fasta tillståndets fysik;

    Abstract : The work presented in this thesis is concerned with the microstructure of zinc oxide varistor materials used in surge protecting devices. This class of material has been characterised with special emphasis on the functional microstructure and the development of the microstructure during sintering. READ MORE

  6. 4. Characterisation of interfaces in ZnO varistor materials using electron microscopy

    Author : Mattias Elfwing; Uppsala universitet; []
    Keywords : ;

    Abstract : .... READ MORE

  7. 5. Recycling of Antimony and Zinc from Metal Oxide Varistors (MOVs)

    Author : Toni Karlsson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; carbothermal reduction; metal oxide varistor; zinc; cementation; antimony; recycling; hydrometallurgy; direct reduction; leaching;

    Abstract : .... READ MORE