Characterization and densification studies on ThO2–UO2 pellets derived from ThO2 and U3O8 powders

Autor:	P.V. Hegde, K.B. Khan, A.K. Sengupta, H.S. Kamath, T.R.G. Kutty, Sanjib Majumdar, T. Jarvis
Rok vydání:	2004
Předmět:	Nuclear and High Energy Physics Thermogravimetric analysis Advanced heavy-water reactor Materials science Nuclear Energy and Engineering Powder metallurgy Metallurgy Pellets Sintering General Materials Science Dilatometer Nuclear chemistry Characterization (materials science)
Zdroj:	Journal of Nuclear Materials. 335:462-470
ISSN:	0022-3115
DOI:	10.1016/j.jnucmat.2004.08.003
Popis:	ThO2 containing around 2–3% 233UO2 is the proposed fuel for the forthcoming Indian Advanced Heavy Water Reactor (AHWR). This fuel is prepared by powder metallurgy technique using ThO2 and U3O8 powders as the starting material. The densification behaviour of the fuel was evaluated using a high temperature dilatometer in four different atmospheres Ar, Ar–8%H2, CO2 and air. Air was found to be the best medium for sintering among them. For Ar and Ar–8%H2 atmospheres, the former gave a slightly higher densification. Thermogravimetric studies carried out on ThO2–2%U3O8 granules in air showed a continuous decrease in weight up to 1500 °C. The effectiveness of U3O8 in enhancing the sintering of ThO2 has been established.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::26274e9bd79500353a7671c0789cb384 https://doi.org/10.1016/j.jnucmat.2004.08.003 Zobrazit plný text záznamu Full Text from ScienceDirect