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Releasing kinetics of dissolved copper and antifouling mechanism of cold sprayed copper composite coatings for submarine screen doors of ships
Rui, Ding1,3; Li, Xiangbo2; Jia, Wang4; Li, Weihua5; Xiao, Wang6; Gui, Taijiang6
2018-09-30
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume763Pages:525-537
Corresponding AuthorLi, Xiangbo(lixb@sunrui.net)
AbstractCopper composite coatings were prepared by cold spray technology to solve the problem of biofouling and attachment on submarine screen doors of ships where the flow of seawater was fast. Cuprous oxide powder, which was difficult to deposit, was sufficiently incorporated into the coatings by plastically deformable copper powder and filled the gaps between copper particles and reduced the porosity of the coatings. During spraying, micro-hammering effect of copper particles enhanced the strength and hardness of the coatings. The release of effective antifouling components was achieved by electrochemical dissolution processes, which contained four sub-processes and could be described by kinetic equations i = i(L)[1 - exp(-F Delta E/2RT)] and i(L) = FDCuCl2- k(4)[Cl-]/(DCuCl2- + k(-4)sigma). In the view of microcosmic point, cuprous oxide and surrounding copper played the role of cathode and anode separately, and constituted corrosion microcells which accelerated the local electrochemical dissolution of anodic copper. When cuprous oxide was dissolved, the anode and cathode interchanged, and this exchange continued to promote the electrochemical dissolution of copper within the micropores formed at the position of original cuprous oxide. The antifouling ability of the coatings was obtained by forming water film on its surface, and the water film was rich in dissolved copper elements. The concentration of dissolved copper was controlled by the electrochemical dissolution of the coatings. This mechanism was suitable for most copper-based anti-fouling materials. (C) 2018 Elsevier B.V. All rights reserved.
KeywordCold spray Antifouling mechanism Copper Kinetics
DOI10.1016/j.jallcom.2018.05.355
Indexed BySCI
Language英语
Funding ProjectChina Postdoctoral Science Fund[2018M632726] ; State Key Laboratory for Marine Coatings[20180501DR] ; Qingdao Independent Innovation Special Project[16-7-1-2-ZDZXX] ; National Science Fund for Distinguished Young Scholars[51525903] ; Qingdao national laboratory for marine science and technology[2017ASTCP-OS09]
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000442484300062
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/159896
Collection中国科学院海洋研究所
Corresponding AuthorLi, Xiangbo
Affiliation1.Yantai Univ, Coll Oceanog, Yantai 264005, Peoples R China
2.Luoyang Ship Mat Res Inst LSRMI, Sci & Technol Marine Corros & Protect Lab, Qingdao 266101, Peoples R China
3.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
4.Ocean Univ China, Qingdao 266001, Peoples R China
5.Sun Yat Sen Univ, Coll Chem Engn & Technol, Zhuhai 519082, Peoples R China
6.Marine Chem Res Inst, State Key Lab Marine Coatings, Qingdao 266071, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Rui, Ding,Li, Xiangbo,Jia, Wang,et al. Releasing kinetics of dissolved copper and antifouling mechanism of cold sprayed copper composite coatings for submarine screen doors of ships[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2018,763:525-537.
APA Rui, Ding,Li, Xiangbo,Jia, Wang,Li, Weihua,Xiao, Wang,&Gui, Taijiang.(2018).Releasing kinetics of dissolved copper and antifouling mechanism of cold sprayed copper composite coatings for submarine screen doors of ships.JOURNAL OF ALLOYS AND COMPOUNDS,763,525-537.
MLA Rui, Ding,et al."Releasing kinetics of dissolved copper and antifouling mechanism of cold sprayed copper composite coatings for submarine screen doors of ships".JOURNAL OF ALLOYS AND COMPOUNDS 763(2018):525-537.
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