נושא הפרוייקט
מספר פרוייקט
מחלקה
שמות סטודנטים
אימייל
שמות מנחים
אפיון תרמי של מערכת Ce1− xTaxO2 עבור x <0.2
Thermal stability of Ce1− xTaxO2 material system for X< 0.2
תקציר בעיברית
Thermal stability of Ce1− xTaxO2 material system for X< 0.3
תקציר באנגלית
Ceria (CeO2) is an oxide of metal cerium known for its exceptional oxygen storage and release capabilities. Doping ceria with tantalum alters the ceria properties and changes the material's performance in certain applications, such as enhanced oxygen ion conductivity, chemical stability, catalytic activity, and electrochemical applications. This project used various techniques to investigate the thermal stability of the material system. The powders in this system were synthesized using the sol-gel method. Characterization was performed using HT-XRD to gather crystallographic information, phase characterization, nucleus size, and lattice parameter at different temperatures. Thermal analysis was conducted to examine the amount of adsorbed gases, detect phase transitions, and coarsening. The findings show that as-synthesis Ce1− xTaxO2 samples are a solid solution with fluorite structure up to 700 degrees Celsius , above this temperature, a second phase was identified.