二氧化铀
![](/Images/godic/202502/19/Uranium-dioxide-3D-vdW1741.png")
![](/Images/godic/202502/19/UO2lattice1741.jpg")
![Pellet de combustible de óxido de uranio.](/Images/godic/202502/19/FuelPellet11741.jpg")
![](/Images/godic/202502/19/ZrUthermalcond1741.png")
二氧化铀（uranium dioxide、uranous oxide）即氧化铀是铀的氧化物。分子式UO2 。在常温下为黑色粉末。密度 10.97g/cm，熔点 2,846.85℃，沸点 大约3,500℃。比热14cal/molK。二氧化铀为面心立方结构萤石型结晶构造。单位立方体由中心4个铀原子和外围8个氧原子组成。
Uranium dioxide
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Uranium dioxide 二氧化铀
![Geiger counter (kit without housing) audibly reacting to an orange Fiestaware shard.](/Images/godic/202502/19/-FiestaWare_Velleman-K2645_GeigerCounter.ogv1741.jpg")
Uranium dioxide or uranium(IV) oxide (UO2), also known as urania or uranous oxide, is an oxide of uranium, and is a black, radioactive, crystalline powder that naturally occurs in the mineral uraninite. It is used in nuclear fuel rods in nuclear reactors. A mixture of uranium and plutonium dioxides is used as MOX fuel. Prior to 1960, it was used as yellow and black color in ceramic glazes and glass.
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