检索结果-南通市图书馆

Developing an atmospheric aging evaluation model of acrylic coatings:A semi-supervised machine learning algorithm

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and materials 2024年第7期31卷 1617-1627页

作者： Yiran Li Zhongheng Fu Xiangyang Yu Zhihui Jin Haiyan Gong lingwei ma Xiaogang Li Dawei Zhang Beijing Advanced Innovation Center for materials Genome Engineering Institute for Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing 100083China National materials Corrosion and Protection Data Center University of Science and Technology BeijingBeijing 100083China BRI Southeast Asia Network for Corrosion and Protection(MOE) Shunde Innovation School of University of Science and Technology BeijingFoshan 528399China

To study the atmospheric aging of acrylic coatings,a two-year aging exposure experiment was conducted in 13 representative climatic environments in *** atmospheric aging evaluation model of acrylic coatings was developed based on aging data including11 environmental factors from 567 cities.A hybrid method of random forest and Spearman correlation analysis was used to reduce the redundancy and multicollinearity of the data set by dimensionality reduction.A semi-supervised collaborative trained regression model was developed with the environmental factors as input and the low-frequency impedance modulus values of the electrochemical impedance spectra of acrylic coatings in 3.5wt%NaCl solution as *** model improves accuracy compared to supervised learning algorithms model(support vector machines model).The model provides a new method for the rapid evaluation of the aging performance of acrylic coatings,and may also serve as a reference to evaluate the aging performance of other organic coatings.

关键词： acrylic coatings coatings aging atmospheric environment machine learning

在线全文

学校读者我要写书评

暂无评论

碳点在金属腐蚀防护领域的研究进展

表面技术 2024年第3期53卷 75-87页

作者：王金科吴尚浩陈质彬王悦马菱薇张达威北京科技大学新材料技术研究院北京100083

综述了碳点的合成路径、改性方法及其在腐蚀防护领域的应用,重点阐述了碳点作为缓蚀剂及其在自修复、自预警等智能防腐涂层方向应用的国内外最新研究进展。首先,分析和探讨了杂原子掺杂型、有机分子修饰型以及生物质衍生型碳点缓蚀剂的... 详细信息

综述了碳点的合成路径、改性方法及其在腐蚀防护领域的应用,重点阐述了碳点作为缓蚀剂及其在自修复、自预警等智能防腐涂层方向应用的国内外最新研究进展。首先,分析和探讨了杂原子掺杂型、有机分子修饰型以及生物质衍生型碳点缓蚀剂的缓蚀机理、优势及不足。其次,介绍了基于碳点的本征和外援自修复涂层、腐蚀预警涂层的设计思路及自修复、自预警机制。最后,提出了碳点在缓蚀剂和智能防腐涂层中应用所存在的问题,并对其未来发展前景进行了讨论。未来应秉持绿色、高效理念,进一步优化碳点的制备工艺,深入研究其在缓蚀、涂层自修复及腐蚀预警中的关键作用,以期早日实现工业应用。

关键词：碳点缓蚀剂涂层自修复自预警

Microbiologically influenced corrosion of 304 stainless steel by halophilic archaea Natronorubrum tibetense

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Journal of materials Science & Technology 2020年第11期42卷 12-20页

作者： Hongchang Qian lingwei ma Dawei Zhang Ziyu Li Luyao Huang Yuntian Lou Cuiwei Du Beijing Advanced Innovation Center for materials Genome Engineering Institute for Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing100083China

The corrosion behavior of 304 stainless steel(SS)in the presence of aerobic halophilic archaea Natronorubrum tibetense was *** 14 days of immersion,no obvious pitting pit was observed on the SS surface in the sterile *** contrast,the SS exhibited serious pitting corrosion with the largest pit depth of 5.0μm in the inoculated medium after 14 *** results of electrochemical tests showed that the barrier property of the passive film decreased faster in the inoculated *** X-ray photoelectron spectroscopy results indicated that the detrimental Fe2+and Cr6+increased in the passive film under the influence of archaea ***,which resulted in the accelerated deterioration of passive film and promoted the pitting *** with the energy starvation tests,the microbiologically influenced corrosion mechanism of 304 SS caused by halophilic archaea *** was discussed finally.

关键词： Stainless Steel Archaea Microbiological influenced corrosion

Functionalized carbon dots for corrosion protection:Recent advances and future perspectives

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and materials 2023年第11期30卷 2112-2133页

作者： Li Zhao Jinke Wang Kai Chen Jingzhi Yang Xin Guo Hongchang Qian lingwei ma Dawei Zhang Beijing Advanced Innovation Center for materials Genome Engineering Institute for Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing 100083China National materials Corrosion and Protection Data Center University of Science and Technology BeijingBeijing 100083China Key Laboratory of Biomechanics and Mechanobiology(Beihang University) Ministry of EducationBeijing Advanced Innovation Center for Biomedical EngineeringSchool of Biological Science and Medical EngineeringBeihang UniversityBeijing 100083China

Metal corrosion causes significant economic losses,safety issues,and environmental ***,its prevention is of immense research *** dots(CDs)are a new class of zero-dimensional carbon nanomaterials,which have been considered for corrosion protection applications in recent years due to their corrosion inhibition effect,fluorescence,low toxicity,facile chemical modification,and *** study provides a comprehensive overview of the synthesis,physical and chemical properties,and anticorrosion mechanisms of functionalized ***,the corrosion inhibition performance of different types of CDs is introduced,followed by discussion on their application in the development of smart protective coatings with self-healing and/or self-reporting *** effective barrier formed by CDs in the coatings can inhibit the spread of local damage and achieve self-healing *** addition,diverse functional groups on CDs can interact with Fe^(3+)and H^(+)ions generated during the corrosion process;this interaction changes their fluorescence,thereby demonstrating self-reporting ***,challenges and prospects for the development of CD-based corrosion protection systems are also presented.

关键词： carbon dots corrosion protection corrosion inhibitors self-healing self-reporting

在线全文

学校读者我要写书评

暂无评论

航空发动机高温涂层腐蚀失效研究进展

热喷涂技术 2024年第2期16卷 1-19页

作者：孙毅李宗宝马菱薇原慷矿冶科技集团有限公司北京100160 北京市工业部件表面强化与修复工程技术研究中心北京102206 特种涂层材料与技术北京市重点实验室北京102206 北京科技大学北京100083

航空发动机中高温涂层部件在不同的工况下会发生差异化的腐蚀现象。简要介绍了YSZ热障涂层、MCrAlY涂层的主要失效模式,重点梳理了这两类涂层的典型腐蚀失效形式,包括酸性腐蚀、熔盐腐蚀、CmaS腐蚀等。酸性腐蚀是涂层在潮湿环境且一般... 详细信息

航空发动机中高温涂层部件在不同的工况下会发生差异化的腐蚀现象。简要介绍了YSZ热障涂层、MCrAlY涂层的主要失效模式,重点梳理了这两类涂层的典型腐蚀失效形式,包括酸性腐蚀、熔盐腐蚀、CmaS腐蚀等。酸性腐蚀是涂层在潮湿环境且一般含有氯、硫条件下发生的弱酸性腐蚀,腐蚀温度为常温。熔盐腐蚀主要针对航空发动机在海洋环境下YSZ热障涂层及MCrAlY涂层面临熔融态盐(如NaCl、Na_(2)SO_(4))发生的腐蚀,腐蚀温度一般为500~1000℃。CmaS腐蚀主要是由沙漠、尘土环境下的复合氧化物引起陶瓷涂层失效,腐蚀温度一般高于1200℃。最后对YSZ热障涂层及MCrAlY涂层的腐蚀失效机理及未来研究方向进行总结和展望。

关键词： YSZ热障涂层 MCrAlY 酸性腐蚀熔盐腐蚀 CmaS腐蚀

Long-term deterioration of lubricant-infused nanoporous anodic aluminium oxide surface immersed in NaCl solution

在线全文

学校读者我要写书评

暂无评论

Journal of materials Science & Technology 2021年第5期64卷 57-65页

作者： Dequan Wu lingwei ma Bei Liu Dawei Zhang Badar Minhas Hongchang Qian Herman A.Terryn Johannes M.C.Mol Beijing Advanced Innovation Centre for materials Genome Engineering Institute for Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing 100083China Department of materials and Chemistry Research Group Electrochemical and Surface EngineeringVrije Universiteit BrusselBrusselsBelgium Department of materials Science and Engineering Delft University of TechnologyDelftthe Netherlands

This study investigated the deterioration of a lubricant-infused anodic aluminium oxide surface in a 1M NaCl solution for~200 *** observation by cryo-SEM and quantitative analyses by UV spectroscopy and EIS revealed that the long-term deterioration of the lubricant-infused surface was divided into two stages:the surface-adhered lubricant layer gradually dissolved at a constant rate until the substrate was exposed;afterwards the lubricant infused in the nanochannels began to diffuse and was depleted after~200 *** EIS results also revealed that the defects reduced the corrosion resistance of the lubricant-infused surface considerably.

关键词： Lubricant-infused surface Anodic aluminium oxide Deterioration EIS

Multi-action self-healing coatings with simultaneous recovery of corrosion resistance and adhesion strength

在线全文

学校读者我要写书评

暂无评论

Journal of materials Science & Technology 2022年第6期101卷 18-27页

作者： Chenhao Ren Yao Huang Wenkui Hao Dawei Zhang Xiejing Luo lingwei ma Jinke Wang Thee Chowwanonthapunya Chaofang Dong Xiaogang Li Beijing Advanced Innovation Center for materials Genome Engineering Institute for Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing 100083China National materials Corrosion and Protection Data Center University of Science and Technology BeijingBeijing 100083China State Key Laboratory of Advanced Power Transmission Technology(Global Energy Interconnection Research Institute Co.Ltd.) Beijing 100083China Faculty of International maritime Studies Kasetsart UniversitySriracha Campus199 TungsuklaSrirachaChonburi 20230Thailand BRI Southeast Asia Network for Corrosion and Protection(MOE) Shunde Graduate School of University of Science and Technology BeijingFoshan 528300China

In this study, a new self-healing strategy that can simultaneously recover the corrosion resistance and the adhesion strength of coatings was introduced. The coating was based on a shape memory epoxy resin containing ethylene vinyl acetate(EVA) microspheres loaded with Ce(NO_(3))_(3)inhibitors, and was cured at a relatively high temperature to facilitate the fusion of adjacent microspheres for a strengthened self-healing effect. The electrochemical impedance spectroscopy(EIS) and scanning electrochemical microscopy(SECM) results demonstrated that the shape memory effect of epoxy matrix, the filling of molten EVA microspheres as well as the release of Ce(NO_(3))_(3)inhibitors contributed synergistically to suppress the corrosion reaction at the coating damage. After healing, the low frequency impedance modulus of the coatings containing Ce(NO_(3))_(3)-EVA microspheres was three orders of magnitude higher than that of the blank epoxy coating. The adhesion strength of the coatings containing Ce(NO_(3))_(3)-EVA microspheres on the metal substrate was also largely repaired thanks to the strong bonding effect of the EVA microspheres.

关键词： Self-healing coating Corrosion protection Adhesion strength Shape memory effect Bonding effect

Photothermal and pH dual-responsive self-healing coating for smart corrosion protection

在线全文

学校读者我要写书评

暂无评论

Journal of materials Science & Technology 2022年第12期107卷 34-42页

作者： Yao Huang Panjun Wang Weimin Tan Wenkui Hao lingwei ma Jinke Wang Tong Liu Fan Zhang Chenhao Ren Wei Liu Dawei Zhang Beijing Advanced Innovation Center for materials Genome Engineering Institute for Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing 100083China National materials Corrosion and Protection Data Center University of Science and Technology BeijingBeijing 100083China National Engineering Research Center for Coatings CNOOC Changzhou Paint and Coatings Industry Research InstituteChangzhou 213016China State Key Laboratory of Advanced Power Transmission Technology(Global Energy Interconnection Research Institute Co.Ltd. )Beijing 100083China BRI Southeast Asia Network for Corrosion and Protection(MOE) Shunde Graduate School of University of Science and Technology BeijingFoshan 528300China

A novel self-healing coating with photothermal and pH dual-responsive properties has been designed to protect carbon steel against corrosion by loading the stimuli-responsive microcapsules into a shape memory epoxy coating. The sandwich-like microcapsules were based on reduced graphene oxide/mesoporous silica(r GO@MS) assembled with a p H-responsive poly(N,N-dimethylaminoethyl methacrylate)(PDmaEma) layer, and were loaded with benzotriazole(BTA) inhibitors(abbreviated as rGO@MS-P-BTA). Under near-infrared(NIR) light irradiation, the prominent photothermal effect of rGO could not only elevate the coating temperature to activate the shape memory effect and close the coating scratch, but also facilitate the release of corrosion inhibitors to suppress the corrosion activity. Moreover,the PDmaEma as a p H-driven “gatekeeper” realized the controlled release of BTA from microcapsules at acid conditions. The surface morphology analysis, electrochemical impedance spectroscopy(EIS), and scanning electrochemical microscopy(SECM) were performed to evaluate the self-healing performance of the composite coatings. The results showed that the combination of NIR light and p H-responsive selfhealing effects endowed the coating with short healing time and prominent healing efficiency.

关键词： Self-healing coatings Corrosion inhibitors Photothermal effects pH-responsive Shape memory polymers

基于单宁酸负载的自预警-自修复双重功能防腐涂层

在线全文

学校读者我要写书评

暂无评论

材料开发与应用 2024年第2期39卷 95-105页

作者：马菱薇杨雪婷郑凯宁王金科王悦杨昊北京科技大学新材料技术研究院北京100083 北京科技大学高等工程师学院北京100083

通过一步合成法制备了负载单宁酸(TA)的显色、缓蚀双功能介孔二氧化硅纳米填料(TA-MSNs),将其掺杂到环氧涂层中,探究涂层的自预警和自修复性能。首先对TA的显色性能及缓蚀性能进行了表征,接着对TA-MSNs纳米填料的形貌结构以及TA的释放... 详细信息

通过一步合成法制备了负载单宁酸(TA)的显色、缓蚀双功能介孔二氧化硅纳米填料(TA-MSNs),将其掺杂到环氧涂层中,探究涂层的自预警和自修复性能。首先对TA的显色性能及缓蚀性能进行了表征,接着对TA-MSNs纳米填料的形貌结构以及TA的释放行为规律进行了探究,并综合分析纳米填料添加量对涂层自预警及自修复性能的影响规律。盐雾实验结果表明,涂层的自预警效果与填料含量呈正相关,5%(w)以上的TA-MSNs添加量可赋予涂层明显的显色性能。电化学阻抗谱和表面分析结果表明,TA-MSNs在涂层中的含量为5%时,破损涂层的低频阻抗模值比纯环氧破损涂层高出2个数量级。当涂层破损时,涂层中释放的TA分子能够与钢铁腐蚀形成的Fe^(3+)发生络合,产生蓝黑色预警金属腐蚀,同时络合物可形成金属表面保护膜层,抑制了腐蚀反应的进一步发展。综上,添加5%TA-MSNs的环氧涂层具有优异的自预警和自修复效果。

关键词：自预警涂层自修复涂层单宁酸缓蚀剂