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corrosion Electrochemical Behavior of the NiCoCrA1Y/ZrO_2.Coating in Natural Seawater

稀有金属材料与工程 2012年第S1期41卷 250-252页

作者： li xiangbo,xing lukuo,{2.,hu xuelei science and technology on marine corrosion and protection laboratory,luoyang ship Material research institute(LSMRI),qingdao 2.6101,china LSMRI Sci & Technol Marine Corros & Protect Lab Qingdao 266101 Peoples R China

NiCoCrAlY/ZrO2.coatings were obtained by cold *** gas was used as processing gas(750℃,3.8 MPa).The corrosion electrochemical behavior of the coating on 907A steel in seawater was studied using open circuit potential monitoring,potentio-dynamic polarization and electrochemical impedance *** showed that the as-deposited NiCoCrAlY/ZrO2.coatings,which were formed through significantly plastic deformed particles during impact,presented a dense microstructure and a high *** indicated that the formation of the stable and consecutive oxidation film,which has an outstanding anti-corrosion performance,was contributed to the compact structure of cold spray *** pervasion of seawater was held back resulting from the cooperation of the oxidation film and the scale-{2.ke structure.

关键词： cold spraying NiCoCrA1Y/ZrO2 coating nitrogen gas corrosion oxidation film

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Microstructure and Internal Friction Behavior of Laser 3D Printed Fe-Based Amorphous Composites

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Acta Metallurgica Sinica(English Letters) 2024年第1期37卷 196-204页

作者： Shuilong huang Qingjun Chen {2. Ji Kan Wang guosheng huang School of Material science and Engineering Nanchang Hangkong UniversityNanchang330063China State Key laboratory for marine {2. and protection Luoyang Ship Material Research Institute(LSMRI)Qingdao266237China

Laser 3D printing,also known as laser additive manufacturing(LAM),is favored for its ability to form bulk metallic glass(BMG)and its composite materials(BMGcs)with freeform *** this work,two different kinds of Fe_(41)Co_(7)Cr_(15)Mo_(14)C_(15)B_(6)Y_(2.amorphous coatings(A and B)were prepared by using LAM {2. under air-and water-cooled conditions,respectively;meanwhile,to reduce the cracks generated due to the residual thermal stresses,coating C obtained by air-sweep annealing of B with a low energy-density *** morphology and amorphous content and microstructure of the coatings were investigated,the results show many cracks in coating B deposited under water-cooled conditions,and its microstructure shows an amorphous-crystal-nanocrystalline mixed *** was suppressed in coating C,obtained by air-sweep annealing based on coating B,but the amorphous content was reduced from 32.6 to 13.4%.And the hardness and corrosion resistance of the coating will increase with the increase in the amorphous ***,the internal friction behavior of a BMGcs was prepared on the basis of the process of sample C is compared with that of as-cast amorphous *** results show that the low temperature internal friction behavior of BMGcs is affected by the defects produced during printing,and the high temperature internal friction behavior is affected by the precipitated hard phase.

关键词： Laser 3D printing Amorphous coating Microstructure corrosion resistance Internal friction behavior

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基于ZIF-7纳米容器的主动腐蚀预警与控制涂层的制备及性能

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腐蚀与防护 2024年第9期45卷 10-19页

作者：赵晓硕姜丹黄国胜马力曾鲜武汉理工大学材料科学与工程学院武汉430070 洛阳船舶材料研究所海洋腐蚀与防护全国重点实验室青岛266237

将负载罗丹明B酰肼(RBH)的ZIF-7纳米容器(ZID-7@RBH)添加到环氧涂层中,制备了主动腐蚀预警和控制双功能一体化的智能防腐蚀涂层。采用扫描电镜(SEM)、X射线衍射仪(XRD)和傅里叶红外光谱仪(FT-IR)分析了ZIF-7@RBH的微观形貌、结构和化学... 详细信息

将负载罗丹明B酰肼(RBH)的ZIF-7纳米容器(ZID-7@RBH)添加到环氧涂层中,制备了主动腐蚀预警和控制双功能一体化的智能防腐蚀涂层。采用扫描电镜(SEM)、X射线衍射仪(XRD)和傅里叶红外光谱仪(FT-IR)分析了ZIF-7@RBH的微观形貌、结构和化学组成。通过盐雾试验和电化学测试考察了ZIF-7@RBH添加量对涂层耐蚀性的影响。结果表明:制备的纳米容器形貌规整、尺寸均一,并且成功负载了RBH;在涂层中添加0.5%的ZIF-7@RBH能够有效抑制界面腐蚀扩展,该涂层在海水中浸泡2. d后,其低频阻抗模量|Z|_(0.01 Hz)比纯环氧涂层高近一个数量级,显著提升了涂层的防腐蚀性能;破损涂层在海水浸泡2. min后,其缺陷处即可显现荧光,展现出优异的腐蚀自预警效果。

关键词： ZIF-7纳米容器罗丹明B酰肼(RBH) 主动腐蚀控制腐蚀自预警

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The structure and electrochemical properties of BDD deposited on the Ti-substrate with Ta buffer layer

The structure and electrochemical properties of BDD deposite...

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2.15 3rd International Conference on Machinery,Materials and Information technology Applications(ICMMITA 2.15)

作者： Feng liu Zhengran huang Dawei Pan {2. huang Yonggui Yan li xiangbo science and technology on {2. corrosion and protection laboratory Luoyang Ship Material Research Institute College of Chemistry and Chemical Engineering Ocean University of China

In this paper, boron doped diamond（BDD） thin flms have been deposited on Ti-based substrates with or without a Ta intermediate layer by microwave plasma chemical vapour deposition（MWCVD）. Raman spectroscopy and scanning electron microscopy（SEM） examinations demonstrate that the electrode has well-defined diamond features. XRD spectroscopy shows no Ti C in the BDD film on the Ti substrate with Ta buffer layer. It is observed that both the BDD electrodes have similar overpotential 2.5V for water electrolysis prohibiting the evolution of oxygen in the cyclic voltammetry test. Further more,the removal efficiency of chemical oxygen demand（COD） approaches to 100% in the electrochemical oxidation of wastewater containing phenol.

关键词： MWCVD BDD electrode electrochemical oxidation

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