Evaluation of long-term corrosion durability and self-healing ability of scratched coating systems on carbon steel in a marine environment
文献类型：CNKI期刊论文
| 作者 | Zhao X(赵霞) ; Chen ZW(陈长伟); Xu WC(徐玮辰); Zhu QJ(朱庆军); Ge CY(戈成岳); Hou BR(侯保荣)
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| 发表日期 | 2017-09-15 |
| 出处 | Chinese Journal of Oceanology and Limnology
 |
| 关键词 | scratched coating system corrosion carbon steel long-term self-healing |
| 英文摘要 | Defects in protective-coating systems on steel surfaces are inevitable in practical engineering applications.A composite coating system,including a primer,middle coat and topcoat,were used to protect carbon steel from corrosion in a marine environment.Two environmental additives,glass fi bers and thiourea,were applied in the middle coat to modify the coating system.The long-term corrosion durability and self-healing ability of the scratched coating system were evaluated by multiple methods.Results of the electrochemical technologies indicated that the coating system that contained 0.5 wt.%fi bers and 0.5 wt.%thiourea presented good corrosion protection and self-healing for carbon steel when immersed in 3.5%Na Cl for 120 d.Evolution of localized corrosion factors with time,as obtained from the current distribution showed that fi bers combined with thiourea could inhibit the occurrence of local corrosion in scratched coating systems and retarded the corrosion development signifi cantly.Surface characterization suggested that adequate thiourea could be absorbed uniformly on fi bers for a long time to play an important role in protecting the carbon steel.Finally,schematic models were established to demonstrate the action of fi bers and thiourea on the exposed surface of the carbon steel and the scratched coating system in the entire deterioration process. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | Supported by the Open Project of Key Laboratory of Marine New Materials of CNITECH(No.LMMT-KFKT-2014-008) ; the National Basic Research Program of China(973 Program)(No.2014CB643304) |
| 卷 | v.35期:05页:110-123 |
| 语种 | 英文; |
| 分类号 | P754.5 |
| ISSN号 | 0254-4059 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/189181]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.KeyLaboratoryofMarineEnvironmentalCorrosionandBio-Fouling,InstituteofOceanology,ChineseAcademyofSciences 2.SchoolofCivilEngineering,QingdaoTechnologicalUniversity |
| 推荐引用方式 GB/T 7714 | Zhao X,Chen ZW,Xu WC,et al. Evaluation of long-term corrosion durability and self-healing ability of scratched coating systems on carbon steel in a marine environment. 2017. |
入库方式： OAI收割
来源：海洋研究所
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