小球藻及光照耦合作用下AH32船板钢的腐蚀行为
Corrosion behavior of AH32 ship plate steel under coupled effect of chlorella and illumination
赵名涵 1陈东旭 2周艳文 2任毅3
作者信息
- 1. 辽宁科技大学 材料与冶金学院,辽宁 鞍山 114051;海洋装备用金属材料及其应用国家重点实验室,辽宁 鞍山 114051
- 2. 辽宁科技大学 材料与冶金学院,辽宁 鞍山 114051
- 3. 海洋装备用金属材料及其应用国家重点实验室,辽宁 鞍山 114051
- 折叠
摘要
利用自主搭建的模拟动态海水实验装置,研究小球藻及光照耦合作用下AH32船板钢的腐蚀行为.实验结果表明,无藻条件下,光照对AH32钢在海水中的腐蚀行为影响较小.有藻+黑暗条件下,试样表面生成团聚的片状FePO4,在一定程度上阻挡腐蚀介质与基体的接触.有藻+光照环境下,AH32钢的自腐蚀电位最高,腐蚀电流密度最低,为2.1×10-5 A/cm2,基体表面生成相对稳定的双层氧化膜,有效阻止腐蚀性介质对基体的侵蚀,提高了AH32钢的耐蚀性能及服役寿命.
Abstract
The simulated dynamic seawater experimental device built independently was used to study the co-rrosion behavior of AH32 ship plate steel under the coupling effect of chlorella and light.The results show that under chlorella-free conditions,light had less influence on the corrosion behavior of AH32 steel in seawater.With chlorella and dark conditions,agglomerated flaky FePO4 was generated on the surface of AH32 steel,which blocked the contact between the corrosive medium and the substrate to a certain extent.The self-corro-sion potential of AH32 steel in the presence of chlorella and light environment,on the other hand,was the highest,and the corrosion current density was the lowest at 2.1×10-5 A/cm2,the generation of a relatively sta-ble double-layer oxide film on the surface of the substrate can effectively prevent the erosion of corrosive me-dia on the substrate,which in turn improves the corrosion resistance and service life of AH32 steel.
关键词
AH32钢/电化学/腐蚀产物膜/电位-pH图/耐蚀机制Key words
AH32 steel/electrochemical/corrosion products film/E-pH diagram/corrosion-resistant mech-anism引用本文复制引用
基金项目
国家自然科学基金(52371066)
海洋装备用金属材料及其应用国家重点实验室-辽科大联合基金(HGSKL-USTLN202206)
出版年
2024
NETL
NSTL
万方数据