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应用低能电子显微术对Ｗ（１１０）面二维氧化结构进行了初步研究．随着氧暴露量的增加，低能电子衍射图样由清洁表面（１×１）结构转变成ｐ（２×１），再变为带有复杂衍射卫星点的ｐ（２×２）结构．利用低能电子显微术的暗场像模式，对（００）束附近的分数衍射斑点进行了放大成像，发现表面由两种对比度相差很大的区域组成，它们就是具有不同方位取向的氧超结构畴区．两种畴区的分布与衬底表面缺陷特别是表面台阶有一定的关系，而且温度对这种钨表面的二维氧化起着重要作用
Low-energy electron microscopy was used to study the two-dimensional oxidation structure of W (110) surface. With the increase of oxygen exposure, the low energy electron diffraction pattern is changed from a 1 × 1 structure to a p (2 × 1) surface and then to a p (2 × 2) structure with complex diffraction satellite spots. Using the low-field electron microscopy of the dark field imaging mode, the fractional diffraction spots in the vicinity of the (00) beam were magnified and imaged, and the surface was found to be composed of two areas with very different contrasts, namely oxygen superstructures with different azimuthal orientations Domain area. The distribution of the two kinds of domains is related to the substrate surface defects, especially the surface steps, and the temperature plays an important role in the two-dimensional oxidation of the tungsten surface