Data underlying the publication "Effect of delayed inhibitor supply on AA2024-T3 intermetallic activity: a local in situ analysis with reflected microscopy"

<em>Overview</em><br>This dataset encompasses both pre-processed and measured data utilized for studying the impact of delayed inhibitor supply on AA2024-T3 intermetallic particle activity. AA2024-T3 samples (approximately 500 x 500 μm exposed area) were immersed in a 0.05 M NaCl electrolyte solution. Ce(NO3)3 was introduced at various time points relative to the start of electrolyte exposure (0, 30, 60, and 180 s). The bulk Ce(NO3)3 concentration was 0.001 M, and the total immersion duration was 3 hours. Reflected microscopy captured surface images, enabling the monitoring of changes at the intermetallic particle level. Image analysis during this immersion period constitutes the primary focus of the data analysis in this study.<br>The data shared specifically include the following:1) Back-scattered electron SEM-EDX images of the metal samples before immersion2) ImageJ ROI set corresponding to intermetallic particle locations extracted from the pre-immersion SEM-EDX images3) Pre-processed time-series reflected microscopy images acquired at different experimental conditions4) Local pixel activity distribution data extracted from time-series microscopy images5) Excel files containing summary of extracted quantities for the intermetallic particles analysed6) SEM-EDX analysis after immersion7) ImageJ and MatLab codes used to extract quantities from the images and sample outputs from the codes

数据集概述
本数据集包含预处理数据与实测数据，用于探究缓蚀剂延迟供给对AA2024-T3合金金属间粒子活性的影响。将暴露面积约500×500 μm的AA2024-T3合金试样浸泡于0.05 M氯化钠（NaCl）电解质溶液中，于电解质浸泡起始后的0、30、60及180 s等不同时间点添加硝酸铈(III)（Ce(NO3)3），体系内硝酸铈(III)的终浓度为0.001 M，总浸泡时长为3小时。通过反射显微镜采集表面图像，可实现金属间粒子尺度的变化监测；本研究的数据分析核心为浸泡过程中的图像分析工作。

本次共享的数据集具体包含以下内容：
1) 浸泡前金属试样的背散射电子扫描电镜-能谱（SEM-EDX）图像
2) 从浸泡前SEM-EDX图像中提取的、对应金属间粒子位置的ImageJ感兴趣区域（ROI）集
3) 不同实验条件下采集的预处理时序反射显微镜图像
4) 从时序显微镜图像中提取的局部像素活性分布数据
5) 包含所分析金属间粒子提取参数汇总信息的Excel文件
6) 浸泡后的SEM-EDX分析结果
7) 用于从图像中提取参数的ImageJ及MATLAB代码，以及代码的示例输出结果