Dissertation > Excellent graduate degree dissertation topics show

Study on Performance Improvement Mechanism of the Silver Tin Oxide Contact Material

Author: WangHaiTao
Tutor: WangJingQin
School: Hebei University of Technology
Course: Motor and electrical
Keywords: contact material rare earth oxide silver tin oxide physical and mechanism performance electrical contact performance
Type: PhD thesis
Year: 2007
Downloads: 302
Quote: 1
Read: Download Dissertation


Because of its excellent switch characteristics, AgCdO, as a contact material, has been widely used in the production of low-voltage electric apparatus. Meanwhile the AgCdO material has disadvantage that cannot be ignored: the Cadmium Poisoning which appears during the manufacture and use of AgCdO. Therefore, the researches of new contact material are extensively regarded. Silver tin oxide is the most promising non-toxic material to substitute silver cadmium oxide. But AgSnO2 material has its fatal shortages: large contact resistance and high temperature rise. These two points seriously affect the electrical performance of low-voltage electric apparatus that adopt AgSnO2. The hige hardness of AgSnO2 makes the composite molding of it extremely difficult. So, it is a very important issue in contact materials research to solve the above key problems from the component design and manufacuture method.Based on the Natural Science Foundation of Hebei Province, Study on Performance Improvement Mechanism of the Silver Tin Oxide Contact Material (ID: 502048), the addition of rare earth oxides of silver tin oxide contact material is studied detailly in this paper. First, it is validated that the rare earth oxides is difficult to decompose and the bismuth oxide is wettable. Silver tin oxide contact material is prepared by chemical coprecipitation which is added rare earth oxides. The physical properties of the contact material are measured. The influence of technical parameters on performance is analysised. The microstructure of the material is analysised. And then, the electrical performance is tested by Electrical Contact Material Parameter Tester. Finally, The Ag/SnO2+ La2O3+ Bi2O3 material and AgCdO material are respectively assembled on the CJ20-40 alternating contactors. The temperature rise, make-break capacity and arc erosion have been tested.

Related Dissertations

  1. Research on Zinc Oxide Varistors Doped with Rare Earth Oxides,TM54
  2. Laser Direct Metal Deposition (DMD) of Ni-Base Superalloy and Its High Temperature Oxidation Resistance,TF124.39
  3. Preparation and Properties Study on Rare Earth Oxide and Sorbitol Derivatives Nucleation Modified Antibacterial PP Film,TQ325.14
  4. Vacuum contactors is the miniaturization of vacuum interrupter,TM572
  5. Rare Earth Complexes Synthesis, Characterization and Preparation of doped zinc oxide and Performance,O614.33
  6. Study on Copper Matrix Electrical Contact Materials Composed with Light Silver,TM24
  7. Study on Catalytic Desulfurization and Denitrification of Flue Gas over Modified Ti-pillaring Rectorites,X701
  8. Study on Preperation, Characterization and Methodology of Salen-type Metal Complexes and Rare Earth Nanometer Oxide,O641.4
  9. Investigation on Dynamic Properties of AgSnO2 Electrical Contact Materials,TM24
  10. Study on Process of Contact Material PtIr25 for Aeroengine,V263
  11. Study on Silver-Ytterbia Contact Material Prepared by Electroless Plating,TB383
  12. Microstructure and properties of silver tin oxide electrical contact materials,TB331
  13. Synthesis and Morphology Evaluating of Low Dimension Rare Earth Compound Materials,O614.33
  14. The Study of Grinding of Polished Ceramic Tile and Diamond Tool,TQ174.7
  15. Influence of La2O3, CeO2 on Preparing the Nanometer Cobalt-based Catalysis Material by the High Energy Ball Mill,TB383
  16. On the Formination and the Developmentin China of Karl Marx’s Interaction,A811
  17. Silver tin oxide composites,TQ131.2
  18. Effect of Lanthanide Oxide Additives on Structure and Electrical Properties of (Na0.5Bi0.5)1-xBaxTiO3 Ceramic with a Composition Near MPB,TB34
  19. Preparation and Characterization of Rare Earth Compounds Nanofibers Via an Electrospinning Technique,TB383.1
  20. Carbide hood accessories,TS43
  21. Optical Properties of Alpha-Sialon Ceramics,TQ174

CLC: > Industrial Technology > Electrotechnical > Electrical materials > Conductive materials and their products
© 2012 www.DissertationTopic.Net  Mobile