Dissertation > Excellent graduate degree dissertation topics show

Improvement of ZnO Varistor Performance

Author: GuoZhengXin
Tutor: CaoQuanXi
School: Xi'an University of Electronic Science and Technology
Course: Materials Science
Keywords: ZnO varistors Sol - gel method . Composite nano- additives Electric sophisticated Flow capacity
CLC: TM54
Type: Master's thesis
Year: 2008
Downloads: 132
Quote: 0
Read: Download Dissertation

Abstract


In this thesis, a detailed analysis on the basis of the principles of the sol - gel method , through a large number of experiments , study and formulation of ZnO varistors Used composite of nano additives reasonable sol - gel process , and detailed description of analysis and discussion of the all the phenomena of this process . Experimental composite nano- additives prepared using the sol - gel process , composite nano- additives mixed the Sb 2 O 3 the SiO 2 and the main the material ZnO prepared diameter of 8.5mm, and a thickness of 1mm ZnO varistors . Morphology by scanning electron microscopy (SEM) has found that the components of the prepared grain size uniform , powder doped uniform and low porosity . By testing the electrical properties found components 8/20μs flow capacity of 2500A , 2ms square wave energy tolerance than 46J , have increased significantly compared to the traditional solid-phase synthesis process , and the the small current performance has also been significantly improved . Different sintering temperature of the sol - gel prepared ZnO varistors electrical properties at the same time , by comparison, the best conclusion sintered at 1100 ° C temperature , the electrical properties of the components . Also , electric sophisticated process of ZnO varistors 2ms square wave energy tolerance obtained a better electrical sophisticated conditions : the varistor voltage impulse voltage of approximately 2.5 times , and the impact of the number 6 times under the conditions , the energy tolerance of the resistor can be improved to some extent .

Related Dissertations

  1. Study on the Synthesis Bi3.25La0.75Ti3O12（BLT） Nanotubes and Nano Wires,TB383.1
  2. Cobalt Ferrite and Its Performance,O611.4
  3. The Research on Preparation Technology and Sintering Behavior of Rare Earth Aluminates (Dy3Al5O12、 NdAlO3、LaAl11O18),TB383.3
  4. Studies of High Refractive Index Materials Prepared by Nano ZrO2 and TiO2 Hybrid Silicone Epoxy Resin,TB383.1
  5. Preparation and Characterization of Al2O3/C Hybrid Aerogels and Al2O3 Aerogels,O648.17
  6. The Study on Properties of Desulfurization and Denitrification by Mn/Al Catalysts,X773
  7. Investigation into ZnO Thin Film Transistors Prepared by Sol-gel Method,TN321.5
  8. Sol - gel method p -type ZnO films,O484.1
  9. Storage-stable organic / inorganic hybrid polymers and their light-cured coating application,TQ630.4
  10. Study on Traffic Adaptability of the Freeway Interchange,U491
  11. Doped ZnO thin film magnetic materials Preparation and magnetic properties at room temperature,O484.1
  12. Nano- TiO_2 composite photocatalytic oxidation of elemental mercury removal experimental study,X51
  13. Finishing of Cotton Fabric with Vitamin E by Sol-gel Method,TS195.5
  14. Technology and Properties of vanadium oxide thin films,TB383.2
  15. Synthesis and Characterization of Sb-doped SnO2-（CeO2-TiO2） Composite Thin Films Deposited on Substrates for Antistatic Electricity and UV-Shielding,TB383.2
  16. Study on the Structure and Magnetic Properties of K-doped SnO2 and V-doped ZnO Diluted Magnetic Semiconductor Powders,TB383.1
  17. Sol-Gel Synthesis of Nano-sized Phosphors and Their Properties,TB383.1
  18. The synthesis of NZP family mesoporous phosphate materials,O643.36
  19. Catalytic Behaviors for Isobutene Selective Oxidation of MoVBi-AlPO4 Catalysts,O643.32
  20. Study on the NOx Storage and Sulfur Resistance of the Rare-Earth Containing La0.7Sr0.3Co1-xFexO3 Perovskite-type NOx Traps,O643.36
  21. Fabrication and Microwave Absorbing Properties of BaFe12-x (Ni （0.5）Cu0.5Zr)x/2O19 Ferrite,TM277

CLC: > Industrial Technology > Electrotechnical > Electrical > Resistor,potentiometer
© 2012 www.DissertationTopic.Net  Mobile