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用x光电子能谱(ESCA)和俄歇电子能谱(AES)结合氩离子轰击刻蚀技术来获得抗唆合不锈钢Cr20Mn10Ni4Si3N的组成元素在表层的随深度分布情况,并描述了Si、Mn、Ni、Cr、Fe、O、C等组成元素的表面化学状态;与普通使用的不锈钢1Cr18Ni9Ti作了比较。元素Mn在表层相当厚的深度范围内呈氧化物形态,在富氧层中富集,很可能由此对材料的抗唆性作出了贡献。观察到表面Cr的价电子密度下降及Cr LMM Auger峰的双峰结构,能量间隔约5eV;表层Cr原子的外壳层电子态也许经历了一个轨道杂化再分布过程,使得其抗氧化能力有所降低。添加Mo及进一步添加Si使表面富氧层变薄,对提高钢的耐蚀作用是有益的。
X-ray photoelectron spectroscopy (ESCA) and Auger electron spectroscopy (AES) combined with argon ion bombardment etching technique were used to obtain the depth distribution of the constituent elements of the anti-cogging stainless steel Cr20Mn10Ni4Si3N in the surface layer, and Si, Mn, Ni , Cr, Fe, O, C and other elements of the surface chemical state; and commonly used stainless steel 1Cr18Ni9Ti made a comparison. The elemental Mn, which is in oxide form in a relatively deep depth range of the surface layer and is enriched in the oxygen-rich layer, is likely to contribute to the abatement of the material accordingly. The valence electron density of Cr on the surface and the bimodal structure of Cr LMM Auger peak were observed. The energy interval was about 5eV. The shell state of Cr atoms in the surface layer may have undergone an orbital hybridization redistribution process, resulting in its antioxidant capacity reduce. The addition of Mo and the further addition of Si makes the surface oxygen-rich layer thinner, which is beneficial to improve the corrosion resistance of the steel.