The surface composition of U(Al_xSi_1-x)₃ alloy (x = 0.57) and its interactions with oxygen, at elevated temperatures, were studied, utilizing Auger electron spectroscopy, X-Ray photoelectron spectroscopy and direct recoil spectrometry. Heating the alloy in ultra-high vacuum, results in aluminum (and some silicon) segregation to the surface, forming, above 700 K, a ∼0.6 nm self-assembly capping layer. Exposing the surface alloy to oxygen, at temperatures up to 500 K, causes oxidation of the uranium and the aluminum components, while silicon is only slightly oxidized. Above 600 K, only the aluminum segregated overlayer is oxidized, forming a passivation layer that inhibits further oxidation of the alloy.

利用俄歇电子能谱，X射线光电子能谱和直接反冲能谱研究了U（Al _x Si _1-x）₃合金（x = 0.57）的表面组成及其在高温下与氧的相互作用。在超高真空下加热合金，导致铝（和一些硅）偏析到表面，在700 K以上形成约0.6 nm的自组装覆盖层。在高达500 K的温度下，将表面合金暴露于氧气中会导致铀和铝成分的氧化，而硅仅被轻微氧化。高于600 K，仅铝隔离的外层被氧化，形成钝化层，抑制了合金的进一步氧化。