Details

Autor(en) / Beteiligte

• Suresh Kumar, K.
• Mathews, Tom
• Bhat, N.P.

Titel

Study on thermal decomposition and sintering behaviour of internally gelated simulated inert matrix fuel

Ist Teil von

• Thermochimica acta, 2005-03, Vol.427 (1), p.27-30

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

2005

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Simulated inert matrix fuels corresponding to the compositions Zr 0.75Y 0.10Er 0.05Ce 0.10O 1.925 and Zr 0.70Y 0.10Er 0.05Ce 0.15O 1.925 were synthesized through the ammonia internal gelation process. The thermal decomposition behaviour of the gel was investigated using thermogravimetry/differential thermal analysis (TG/DTA) and powder X-ray diffraction (XRD). The gel decomposes in two stages. The first step involves evolution of water and ammonia at around 200 °C and in the second step at around 600 °C the decomposition of trapped formaldehyde (HCHO) occurs simultaneously with crystallization of zirconia. The crystallite size of the decomposed powder was found to be smaller than 10 nm. The decomposed powder could be sintered to around 90% of theoretical density using microwave energy source in 60 min.