【摘要】 本文研究了Q235碳钢在海南滨海大气环境中的腐蚀行为。通过为期4 a的大气暴露试验，分析了Q235碳钢的腐蚀动力学规律、腐蚀形貌以及腐蚀产物。试验结果显示，Q235碳钢在海南滨海大气环境下的腐蚀速率随时间推移呈上升趋势，锈层对基体没有明显的保护作用。腐蚀产物主要为γ-FeOOH，长时间暴露后还会出现β-FeOOH和少量Fe₃O₄。本研究对于理解Q235碳钢在海南滨海大气环境中的腐蚀机理及预测其腐蚀寿命具有重要意义。更多还原

【Abstract】 This study investigated the corrosion behavior of Q235 carbon steel in the coastal atmospheric environment of Hainan. Through a four-year atmospheric exposure test,the corrosion kinetics,morphological evolution,and corrosion products of Q235 carbon steel were systematically analyzed. The results indicate that the corrosion rate of Q235 carbon steel in this environment increases over time,with the rust layer exhibiting no significant protective effect on the substrate. The corrosion products were predominantly composed of γ-FeOOH（lepidocrocite）. After prolonged exposure,β-FeOOH（akaganéite） and minor Fe₃O₄（magnetite） are additionally detected. This research provides critical insights into understanding the corrosion mechanisms of Q235 carbon steel in Hainan′s coastal-marine atmosphere and predicting its long-term service lifespan.更多还原