Dissertation > Excellent graduate degree dissertation topics show

Ti-V alloy hydride hydrogen isotope effect

Author: WanJingPing
Tutor: PengShuMing
School: Chinese Academy of Engineering Physics
Course: Nuclear Fuel Cycle and Materials
Keywords: Ti - V alloy Hydrogen isotope effect The Sievert ( Xiwu Er ) law Van't Hoff equation ( van der Hoff ) Lattice structure Protium deuterium separated factor Kinetic equation
CLC: TG139.7
Type: Master's thesis
Year: 2005
Downloads: 80
Quote: 0
Read: Download Dissertation

Abstract


Ti 0.76 V 0.24 Ti 0.51 V 0.49 and Ti 0.25 V 0.75 three alloys hydride structure, suction protium, deuterium behavior of thermodynamics and kinetics, measured got thermodynamic equilibrium separation factor, kinetic parameters, and HD. Theoretical simulation results, the Ti-V alloy hydrogen isotope effect. Ti-V alloy and its hydride structure determination, the application of the XRD phase structure analysis and theoretical calculations. The result is: the study of the three Ti-V alloy bcc structure with cell parameters 0.3141nm; pure beta hydride is fcc structure, cell parameters 0.4314nm; Ti-V alloy has good stability , suction protium, deuterium does not occur after the decomposition. The three alloys suction protium, deuterium absorption P-C-T relationship has been studied to the same conclusion as the XRD analysis, the Ti-V alloy suction protium deuterium phase transition plateau in c gt; 1.0 to appears. In c LT; range of 1.0 Ti-V alloy hydride Q, the XRD spectra of Ti-V alloy XRD spectra similar, and Ti-V alloy suction protium deuterium approximation to comply with Sievert (Xi Wuer ) law. Application Sievert (Xiwu Er) law and the Van't Hoff equation (van der Hoff) were calculated thermodynamic parameters of the three alloys sucked protium deuterium. The enthalpy of the alloy in c LT; within 1.0, the three alloys suction protium deuterium enthalpy With the increase of the content of Ti alloy is increased; in c GT; 1.0 within three alloys suction protium deuterium The increase and decrease of the Ti content. Thermodynamics of Ti-V alloy suction protium deuterium isotope effect is not obvious, but the overall trend is currently under the same conditions, the equilibrium pressure slightly higher than the equilibrium pressure of deuterium to protium, indicating protium compounds than deuterium compounds stabilized. Hydrogen isotope effect on the three alloys - hydrogen isotope system theoretical calculation, the total energy of the system value and unit cell structure, by comparing the Ti-V alloy protium compounds stability gt; deuterium compound stability GT ; tritiated compounds stability. Been measured three alloys protium and deuterium absorption kinetics curves found three alloys suction protium deuterium dynamics do not comply with the common gas - solid reaction kinetic equation, the kinetics of the process is very complex, and by the temperature, time and pressure of the hydrogen isotopes and hydrogen isotopic composition of metal and many other factors. The study concludes, get the three alloys sucked protium deuterium kinetic equation and scope of application: the three alloys suction protium deuterium showed significant kinetic hydrogen isotope effect. Ti-V alloy suction protium deuterium comparison, the rate of absorption protium apparent reaction rate constant, the apparent activation energy is low. The show that protium easy enrichment of deuterium enrichment in the gas phase in the solid phase. The use of a quadrupole mass spectrometer measurements of deuterium mixed gas the three alloys suction protium equilibrium separation factor. Results the three alloys protium deuterium separation factor values ??are greater than 1, indicating that the enrichment of deuterium in the gas phase, while the protium in the solid phase

Related Dissertations

  1. The Study on Structural Calculation and Analysis Method of Lattice-type Crane with Variable Cross-section Boom,TH21
  2. Heat Treatment of Cast Al-Cu-Ti-(La) alloy microstructure and mechanical properties of,TG166.3
  3. Rearch of the Cosmological Term and Universe Solutions in the Five-Dimensional,P159
  4. Properties and microstructure of powder metallurgy molybdenum alloy hot forging,TG319
  5. Of TiC Reinforced relative Mo alloy mechanical properties and microstructure,TG146.412
  6. Microstructures and Properties of Brazing Joint of Al2O3 Ceramic and Q235 Steel,TG407
  7. Studies on Kinetics of Ammonia Synthesis and Hydrogen Inhibition on Carbon-supported Ru Catalysts,TQ113.25
  8. Web logs based on the closed frequent itemsets mining,TP393.092
  9. Study on the Preparation of Ti-Si Alloy by the FFC Method,TG146.23
  10. Synthesis and Fermentation Kinetics of Dextran by Leuconostoc Mesenteroides,TQ929.2
  11. Heteropoly acid used in the isobutylene catalytic hydration Preparation of tert- butanol research,TQ223.124
  12. Study on the Coating Preparation and Corrosion Resistance of Zn-Ti-Al Ternary Alloy,TQ153.2
  13. Study on the Algorithms of Adaptive Volterra Filter,TN713
  14. The Research of Concept Lattice Pruning Method and Its Application in Web Mining,TP311.13
  15. Study on the Adsorption Mechanism of Ni2+ on Layered Double Hydroxides,X703
  16. Zn-Ti-Al hot-dip -type layer and corrosion properties of the mechanism,TG174.44
  17. AWO4 （A=Mn, Cd, Ca, Zn） Nanoparticles: Size and Doping Effect on Lattice Structure and Properties,TB383.1
  18. Study on Adsorption Properties of Activated Sludge in Dye Wastewater Treatment,X703.1
  19. Study on the Impact of Imethoate Volatile Behavior on Air-water Interface by Specific Surfactants,X592
  20. Study on Epdm Insulation Material and Its Property,TB34
  21. The Study on What Function Inorganic Salt Accelerates the Reaction between Tert-Amyl Alcohol and Sodium,O643.1

CLC: > Industrial Technology > Metallurgy and Metal Craft > Metallurgy and Heat Treatment > The alloy learn with a variety of properties of alloys > Other special nature of the alloy > Hydrogen storage alloy
© 2012 www.DissertationTopic.Net  Mobile