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2014•Russian Journal of Non-Ferrous MetalsRequires access

Fuel pellets based on uranium dioxide and alloyed with nanodispersed additives of Al(OH)3 and TiO2

В. С. Панов, V. Yu. Lopatin, L. V. Myakisheva, V. V. Malovik, В. В. Мартынов

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Abstract

The influence of alloying additives Al(OH) 3 and TiO 2 on the structure and properties of uranium dioxide fuel pellets is investigated. It is established that their introduction improves the characteristics of the macrostructure and microstructure of fuel pellets and positively affects their properties. For example, the grain size in the fuel pellet increases to 39 mm (instead of 10–15 mm in the case of usual technology), the number of large (>10 mm) pores decreases, and the strength and thermal conductivity increase slightly.

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What this paper is about

The influence of alloying additives Al(OH) 3 and TiO 2 on the structure and properties of uranium dioxide fuel pellets is investigated. It is established that their introduction improves the characteristics of the macrostructure and microstructure of fuel pellets and positively affects their properties. For example, the grain size in the fuel pellet increases to 39 mm (instead of 10–15 mm in the case of usual technology), the number of large (>10 mm) pores decreases, and the strength and thermal conductivity increase slightly.

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Available abstract

The influence of alloying additives Al(OH) 3 and TiO 2 on the structure and properties of uranium dioxide fuel pellets is investigated. It is established that their introduction improves the characteristics of the macrostructure and microstructure of fuel pellets and positively affects their properties. For example, the grain size in the fuel pellet increases to 39 mm (instead of 10–15 mm in the case of usual technology), the number of large (>10 mm) pores decreases, and the strength and thermal conductivity increase slightly.

Key concepts: Pellets, Pellet, Uranium dioxide, Microstructure, Materials science, Uranium, Grain size, Metallurgy

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