Bahan bakar nuklir: Perbedaan antara revisi
Konten dihapus Konten ditambahkan
Baris 49:
Untuk lebih detil silakan lihat di [http://equip.kaist.ac.kr/Journal/lfat.pdf]
=====UOX=====
[[Uranium dioxide]] is a black [[semiconductor]] solid. It can be made by reacting [[uranyl]] nitrate with a base ([[ammonia]]) to form a solid (ammonium uranate). It is heated (calcined) to form U<sub>3<sub>O<sub>8<sub> that can than be converted by heating in an [[argon]] / [[hydrogen]] mixture (700 <sup>o<sup>C) to form UO<sub>2<sub>. The UO<sub>2<sub> is then mixed with an organic binder and pressed into pellets, these pellets are then fired at a much higher temperature (in H<sub>2<sub>/Ar) to [[sinter]] the solid. The aim is to form a dense solid which has few pores.
The thermal conductivity of uranium dioxide is very low compaired with that of zirconium metal, and it goes down as the temperture goes up.
[[Image:ZrUthermalcond.jpg|center|thumb|450px|The thermal conductivity of zirconium metal and uranium dioxide as a function of temperture]]
It is important to note that the corrosion of uranium dioxide in an [[aqueous]] environment is controlled by similar [[electrochemical]] processes to the [[galvanic]] [[corrosion]] of a metal surface.
==Pranala luar dan referensi==
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