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Characterisation of a steel surface after XeCl laser irradiation

机译:XeCl激光辐照后的钢表面特性

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This study focuses on the surface modification of a low alloy steel by XeCl laser under ambient conditions. These modifications were investigated employing two complementary methods. Auger electron spectroscopy was employed for chemical characterisation and depth profile and scanning electron microscopy for the surface morphology after laser irradiation. It is shown that laser treatment induce the formation of Fe(Ⅲ) oxide, mainly Fe_2O_3. This oxide can be described as a multilayer structure. One part, e.g. the upper layer, is formed with Fe_2O_3 aggregates due to the coalescence of small particles of Fe_2O_3 formed in the plasma by reaction of matter ejected from the surface with O_2 gas in the atmosphere. Under this layer deposited on the surface, we find a Fe_2O_3 structured layer corresponding to the oxidation of the melt layer.
机译:这项研究的重点是在环境条件下用XeCl激光对低合金钢进行表面改性。使用两种互补方法研究了这些修饰。俄歇电子能谱用于化学表征和深度分布,扫描电子显微镜用于激光辐照后的表面形态。结果表明,激光处理诱导了Fe(Ⅲ)氧化物的形成,主要是Fe_2O_3。该氧化物可以描述为多层结构。一部分,例如上层由Fe_2O_3聚集体形成,这是由于等离子体中形成的Fe_2O_3小颗粒通过从表面喷射的物质与大气中的O_2气体反应而聚结而形成的。在沉积在表面上的该层之下,我们发现了对应于熔体层氧化的Fe_2O_3结构层。

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