海南湿热海洋大气环境Q235钢腐蚀行为研究及严酷度评估

目的 探究我国典型湿热海洋大气环境特征,以Q235钢为标杆材料,评估并可视化展示海南湿热海洋大气环境严酷度。方法 以海南岛为典型湿热海洋地区,基于分布全岛全域的13个站点开展自然大气环境试验,采集各站点大气环境数据与Q235钢材料性能数据。通过分析表观形貌、腐蚀质量损失等性能,探究Q235钢在海南大气环境的腐蚀行为规律及其在全岛不同区域的腐蚀程度差异。基于大气环境因素与Q235钢腐蚀行为间相关性研究,筛选腐蚀敏感环境因素,构建“腐蚀质量损失-敏感环境因素”映射模型。基于Q235钢海南各地区腐蚀质量损失数据,通过Griddata插值,计算绘制腐蚀质量损失分布地图。结果 掌握了Q235钢在海南各地区腐蚀行为差异,可视化展示了海南大气腐蚀严酷度。结论 影响Q235钢海南地区腐蚀的敏感环境因素为离海距离及湿度大于80%的时间。海南地区沿海岸及东部地区大气环境腐蚀严酷度高,中部及西部地区严酷度低。

Corrosion Behaviors of Q235 Steel and Severity Evaluation for Humid and Hot Marine Atmosphere Environmental in Hainan

The work aims to explore the typical characteristics of hot and humid marine atmospheric environment in China and evaluate and visualize the severity of hot and humid marine atmospheric environment in Hainan with Q235 steel as the benchmark material. With Hainan Island as a typical humid and hot marine atmosphere area, the natural atmospheric environment test was carried out based on 13 stations distributed throughout the island, and the atmospheric environment data and Q235 steel material performance data of each station were collected. By analyzing the apparent morphology, corrosion weight loss and other properties, the corrosion behavior rules of Q235 steel in Hainan atmospheric environment and the corrosion degree differences in different areas of Hainan were explored. Based on the correlation between atmospheric environmental factors and Q235 steel corrosion behaviors, the corrosion sensitive environmental factors were screened and the mapping model of "corrosion weight loss-sensitive environmental factors" was constructed. Based on the corrosion weight loss data of Q235 steel in various regions of Hainan, the distribution map of corrosion weight loss was calculated and drawn through Griddata interpolation. The corrosion behavior differences of Q235 steel in various regions of Hainan was mastered, and the severity of atmospheric corrosion in Hainan was visually displayed. The sensitive environmental factors affecting the corrosion of Q235 steel in Hainan are the distance from the sea and the period with humidity greater than 80%. The severity of atmospheric corrosion is high in the coastal and eastern areas of Hainan, and low in the central and western areas.