Abstract In this work, a comparative electrochemical impedance spectroscopy (EIS) study of the native oxide layer of selective laser melted and wrought 316 L stainless steel is conducted. A careful examination of the data is carried out in order to properly identify the appropriate model to fit the EIS response. From the parameters calculated by fitting the EIS data and a complementary XPS analysis, the electrical and dielectric characteristics of the passive oxide layers of the specimens were obtained. Clear differences were noticed between the two materials, which could definitely contribute to the overall understanding of the corrosion behavior of these materials.

中文翻译：

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增材制造和锻造 316 L 不锈钢的天然氧化层的 EIS 比较研究和关键等效电路 (EEC) 分析

摘要 在这项工作中，对选择性激光熔化和锻造 316 L 不锈钢的自然氧化层进行了比较电化学阻抗谱 (EIS) 研究。对数据进行仔细检查，以正确识别适合 EIS 响应的适当模型。根据通过拟合 EIS 数据和补充 XPS 分析计算的参数，获得了样品钝化氧化层的电气和介电特性。注意到两种材料之间存在明显差异，这肯定有助于全面了解这些材料的腐蚀行为。