Details

Autor(en) / Beteiligte

• Suresh Kumar, K
• Nawada, H.P
• Bhat, N.P

Titel

Comparative study of thermal decomposition of the sol–gel products of U and Ce by external and internal gelation processes

Ist Teil von

• Journal of nuclear materials, 2003-09, Vol.321 (2), p.263-268

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

2003

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The synthesis of U 0.7Ce 0.3O 2+ x was carried out using external gelation (with urea/NH 3 solution) and internal gelation (with urea/hexamethylene tetramine). The compounds formed were characterized using thermal analytical techniques in Ar, vacuum and air, X-ray powder diffraction and effluent gas analysis by mass spectrometry. The compound formed through external gelation was found to form UO 3 as an intermediate product (identified by O 2 loss to form U 3O 8) whereas the compound formed through internal gelation resulted in single-phase UO 2, which could be sintered into homogeneous pellets with 97% th.d. in Ar + 2% H 2 atmosphere at temperatures as low as 1100 °C.