检索结果-南通市图书馆

Influence of oxide scales on the corrosion behaviors of B510L hot-rolled steel strips

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2016年第7期23卷 769-778页

作者： Cheng Man Chao-fang Dong Hui-bin Xue Kui Xiao Xiao-gang Li Hui-bin Qi Key Laboratory for corrosion and protection(MOE) University of Science and Technology BeijingBeijing 100083China Ningbo Institute of Material Technology and engineering Chinese Academy of SciencesNingbo 315201China BaoSteel Group Technological center Shanghai 201900China

The influence of oxide scales on the corrosion behaviors of B510 L hot-rolled steel strips was investigated in this study. Focused ion beams and scanning electron microscopy were used to observe the morphologies of oxide scales on the surface and cross sections of the hot-rolled steel. Raman spectroscopy and X-ray diffraction were used for the phase analysis of the oxide scales and corrosion products. The corrosion potential and impedance were measured by anodic polarization and electrochemical impedance spectroscopy. According to the results, oxide scales on the hot-rolled strips mainly comprise iron and iron oxides. The correlation between mass gain and test time follows a power exponential rule in the damp-heat test. The corrosion products are found to be mainly composed of γ-Fe OOH, Fe3O4, ？-Fe OOH, and γ-Fe2O3. The contents of the corrosion products are different on the surfaces of the steels with and without oxide scales. The steel with oxide scales is found to show a higher corrosion resistance and lower corrosion rate.

关键词： strip steel hot rolling focused ion beams Raman spectroscopy oxide scale corrosion

Self-assemble Mechanism of Nickel Nanobelts Prepared by Sol-precipitation and Thermal Decomposition Route

在线全文

学校读者我要写书评

暂无评论

Journal of Wuhan University of Technology(Materials Science) 2022年第2期37卷 206-211页

作者： LI Tao CHEN Jian MA Guohua Department of Materials engineering School of Mechanical EngineeringChengdu UniversityChengdu 610106China Material corrosion and protection Key Laboratory of Sichuan Province Zigong 643000China Analysis and Testing center Southwest University of Science and TechnologyMianyang 621010China

Using the idea of material design and the design of reaction system and conditions,quasi-one-dimensional nano-materials with ribbon-like structure were successfully *** tartrate nanobelts were prepared by a sol-precipitation route,using nickel chloride hexahydrate and tartaric acid as raw materials,and using ammonium hydroxide as pH value *** nanobelts with smooth surface were prepared by a thermal-decomposition route at about 355℃for about 30 minutes,in CO_(2) atmosphere,using nickel tartrate nanobelts as *** analyses of atomic absorption spectrometry(AAS),organic elemental analyzer(OEA),infrared spectroscopy(IR)and ultraviolet-visible spectroscopy(UV-Vis)indicate that the products as-prepared is nickel tartrate,which has octahedral configuration of co-ordination of nickel *** images of scanning electron microscopy(SEM)indicate that the morphology of nickel tartrate as-prepared is an obvious belt structure with clear and smooth *** images of SEM also indicate that the nickel nanobelts have clear and smooth *** nickel nanobelts are about tens of micrometers in length,tens of nanometers in thickness,and 100-200 nanometers in width.

关键词： nickel tartrate nickel nanobelts sol-precipitation thermal-decomposition

New insights into the mechanism of localised corrosion induced by TiN-containing inclusions in high strength low alloy steel

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29期124卷 141-149页

作者： Chao Liu Reynier I.Revilla Xuan Li Zaihao Jiang Shufeng Yang Zhongyu Cui Dawei Zhang Herman Terryn Xiaogang Li Institute of Advanced Materials and Technology University of Science and Technology BeijingBeijing 100083China National Materials corrosion and protection Data center University of Science and Technology BeijingBeijing 100083China Department of Materials and Chemistry Research Group Electrochemical and Surface EngineeringVrije Universiteit BrusselBrusselsBelgium School of Metallurgical and Ecological engineering University of Science and Technology BeijingBeijing 100083China Department of Material Science and engineering Ocean University of ChinaQingdao 266100China

This work investigated the chemical and electrochemical mechanisms of localised corrosion triggered by CaS·xMgO·y Al_(2)O_(3)·TiN complex inclusions in high strength low alloy steel(HSLAS)under a simulated marine *** focus was given to the role of the TiN portion of the inclusion on the initiation and growth of the corrosion *** thermodynamic process of pitting initiation was investigated by Gibbs free energy,Pourbaix diagram and first principle *** corrosion is mainly induced by inclusions and triggered by dissolution of adjacent distorted *** dissolution of CaS portion in CaS·xMgO·y Al_(2)O_(3)·TiN complex inclusion creates an acidic aggressive environment that accelerates the further dissolution of inclusion and *** coupling effect between TiN inclusion and matrix is directly *** covered with a TiOfilm acts as the cathodic phase in galvanic corrosion,although it has a lower Volta potential than the *** is an unusual correlation with the scanning Kelvin probe force microscopy result,which has been explained for this special system.

关键词： High strength low alloy steel TiN-containing inclusion Localised corrosion Pourbaix diagram First principle calculation

Inhibition of sulfate-reducing bacteria influenced corrosion on hydrophobic poly(dimethylsiloxane)coatings

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17期52卷 198-206页

作者： Innocent O.Arukalam C.N.Njoku Lihui Yang Baorong Hou Ying Li corrosion and protection Division Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Shenyang National Laboratory for Materials Science Northeastern UniversityShenyang 110819China Department of Polymer and Textile engineering Federal University of TechnologyP.M.B.1526 Owerri Nigeria Key Laboratory of Marine Environmental corrosion and Bio-fouling Institute of OceanologyChinese Academy of SciencesQingdao 266071China Open Studio for Marine corrosion and protection Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China Advanced Functional Materials/corrosion Research Group Africa Centre of Excellence in Future Energies and Electrochemical Systems(ACE-FUELS)Federal University of Technology Owerri(FUTO)Nigeria

Sulfate-reducing bacteria(SRB)has been pointed out as one of the causative agents of microbial induced corrosion in the marine *** address this problem,novel strategies are being experimented as against the earlier methods which have been banned due to their toxic effects on useful aquatic ***,the aim of this study was to investigate the effect of non-toxic perfluorodecyltrichlorosilane(PFDTS)on resistance of hydrophobic poly(dimethylsiloxane)/phosphoric acid-treated zinc oxide(PDMS/PA-treated ZnO)coatings to SRB-induced biofouling and *** surface features of the coatings before and after exposure to SRB/NaCl solution were analyzed by scanning electron microscopy(SEM).Wettability of the coatings before and after exposure was also *** interaction of SRB with the coatings was investigated by FTIR *** resistance performance of the modified coatings against SRB-induced corrosion was monitored by electrochemical impedance spectroscopy(EIS).The EIS measurements revealed that 0.20 g PFDTS-based coating displayed highest corrosion resistance with impedance modulus of 6.301×10^10 after 15 d of exposure to SRB/NaCl *** results were corroborated by surface and chemical interaction analyses,and thus,indicate that 0.20 g PFDTSmodified PDMS/PA-treated ZnO coating has potentials for excellent SRB-induced corrosion resistance and anti-biofouling performance.

关键词： corrosion Hydrophobic coating Perfluorodecyltrichlorosilane Poly(dimethylsiloxane) Sulfate-reducing bacteria

High temperature oxidation behavior of aluminide on a Ni-based single crystal superalloy in different surface orientations

在线全文

学校读者我要写书评

暂无评论

Progress in Natural Science:Materials International 2014年第2期24卷 163-170页

作者： Fahamsyah H.Latief Koji Kakehi El-Sayed M.Sherif Department of Mechanical engineering Tokyo Metropolitan University center of excellence for Research in engineering Materials (CEREM) Advanced Manufacturing Institute King Saud University Electrochemistry and corrosion Laboratory Department of Physical Chemistry National Research Centre (NRC)

An investigation on oxidation behavior of coated Ni-based single crystal superalloy in different surface orientations has been carried out at1100 ℃. It has been found that the {100} surface shows a better oxidation resistance than the {110} one, which is attributed that the {110}surface had a slightly higher oxidation rate when compared to the {100} surface. The experimental results also indicated that the anisotropic oxidation behavior took place even with a very small difference in the oxidation rates that was found between the two surfaces. The differences of the topologically close packed phase amount and its penetration depth between the two surfaces, including the ratio of α-Al2O3 after 500 h oxidation, were responsible for the oxidation anisotropy.

关键词： Ni-based superalloy Oxidation behavior Microstructure Aluminide coating Crystallographic orientation

corrosion behavior of low-carbon Cr micro-alloyed steel for grounding grids in simulated acidic soil

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Iron and Steel Research International 2018年第7期25卷 755-766页

作者： Jian Li Hang Su Feng Chai Dong-mei Xue Li Li Xiang-yang Li Hui-min Meng Division of engineering Steel Central Iron and Steel Research Institute Beijing 100081 China Enterprise Management Department China Iron and Steel Research Institute Group Beijing 100081 China corrosion and protection center University of Science and Technology Beijing Beijing 100083 China

To improve the corrosion resistance of steels for grounding grids, a low-carbon Cr micro-alloyed steel was developed （C 1 steel）, and corrosion behavior of Q235 steel and newly developed C1 steel in simulated acidic soil was investigated. The corrosion rate was evaluated with the mass loss measurements, while the corrosion morphology of surface and cross section of rust layer was observed by scanning electron microscopy. The corrosion products were analyzed by energy- dispersive X-ray spectrometry, X-ray diffraction and X-ray photoelectron spectroscopy, and the polarization curve was measured using potentiodynamic polarization method. Results indicated that C 1 steel displayed good corrosion resistance in the simulated acidic soil, of which the corrosion rate was only 30% of that of Q235 steel after corrosion for 360 h. The analysis of rust layer showed that lower carbon content in steel could reduce the tendency of micro cell corrosion and appropriate amount of chromium could improve the corrosion potential of metal matrix. Moreover, the analysis of X-ray photoelectron spectroscopy revealed that the chromium enriched in inner rust layer of C1 steel existed mainly in the form of Fe2CrO4, which facilitated the formation of Cr-goethite and improved the protection of corrosion products.

关键词： Soil corrosion Grounding grid Low-carbon steel Cr micro-alloying corrosion product - Cr-goethite

Effects of nanoscale Sn segregation on corrosion behavior of laser powder bed fusion Cu-15Ni-8Sn alloy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2023年第27期158卷 96-110页

作者： Pengcheng Zuo Zequn Zhang Xiaohong Qi Zhuangzhuang Liu Jiuyang Xia Junshen Wu Xiaogang Li Bowei Zhang Institute for Advanced Materials and Technology University of Science and Technology BeijingBeijing 100083China Beijing Advanced Innovation center for Materials Genome engineering University of Science and Technology BeijingBeijing 100083China National Materials corrosion and protection Data center University of Science and Technology BeijingBeijing 100083China

corrosion resistance of laser powder bed fusion(LPBF)Cu-15Ni-8Sn alloys is crucial towards its practical application in marine *** this work,corrosion behavior of LPBF Cu-15Ni-8Sn alloy was com-prehensively *** results suggest that LPBF Cu-15Ni-8Sn alloy exhibits superior corrosion re-sistance than the conventional casting counterpart and their corrosion behavior is highly associated with Sn ***,a triple-layer film will be formed on the surface of LPBF Cu-15Ni-8Sn alloy when being exposed to 3.5 wt%NaCl *** be more detailed,the abundance of nanoscale Sn-rich precipitates at the molten pool boundaries promotes the initial formation of a thick inner layer,where Ni and Sn tend to be distributed at inner and outer positions of the layer,*** contrast,the inner layer on molten pools is much thinner ascribed to a lower Sn content,facilitating the earlier nucleation and growth of a compact middle layer that is mainly composed of numerous Cu-rich *** the outmost position,CuO,Cu(OH)_(2) and Ni(OH)_(2) constitute the major composition of the loose *** results of this study could contribute to the optimal design and processing of additively manufactured Cu-Ni-Sn alloys.

关键词： Laser Powder Bed Fusion(LPBF) Cu-15Ni-8Sn alloy Sn segregation Localized corrosion Oxide film

Acidic electroreduction CO_(2)to formic acid via interfacial modification of Bi nanoparticles at industrial-level current

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2024年第7期17卷 5817-5825页

作者： Tian Dong Hongdong Li Zhenhui Wang Yanling Geng Rui Chang Xiaofeng Tian Jianping Lai Shouhua Feng Lei Wang Key Laboratory of Eco-Chemical engineering International Science and Technology Cooperation Base of Eco-Chemical Engineering and Green ManufacturingCollege of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266042China Shandong engineering Research center for Marine Environment corrosion and Safety protection College of Environment and Safety EngineeringQingdao University of Science and TechnologyQingdao 266042China

Electrocatalytic CO_(2)reduction reaction(CO_(2)RR)in acidic media is a promising approach to overcome the unavoidable formation of carbonates in alkaline or neutral ***,the proton-rich environment near the catalyst surface favors hydrogen evolution reactions(HER),leading to lower energy efficiency of the desired products,especially in industrial-level current ***,quaternary ammonium cationic surfactant(cetyltrimethylammonium bromide(CTAB))was introduced into acidic electrolyte to modulate the interfacial microenvironment,which greatly enhanced CO_(2)electroreduction to formic acid(HCOOH)at the Bi/C nanoparticles *** a Bi/C nanoparticles electrode with CTAB added,constant production of formic acid was enabled with a cathodic energy efficiency of>40%and maximum FE_(HCOOH)(FE=Faradaic efficiency)of 86.2%at−400 mA·cm^(−2)over 24 *** with in-situ attenuated total reflection Fourier transform infrared spectroscopy,the concentration of*OCHO intermediates significantly increased after CTAB modification,confirming that the hydrophobic interface microenvironment formed by dynamic adsorption of positively charged long alkyl chains on Bi/C nanoparticle electrodes inhibited HER and improved the selectivity of CO_(2)RR to HCOOH.

关键词： acidic media CO_(2)electrolysis electrolyte additive hydrophobic interfacial microenvironment industrial-level current

A Green Conversion Coating on a Magnesium Alloy for corrosion protection

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 2023年第10期36卷 1630-1648页

作者： Tong Bu Ruijie Jia Tao Ying Andrej Atrens Pengbo Chen Dajiang Zheng Fuyong Cao center for Marine Materials corrosion and protection College of MaterialsFujian Key Laboratory of Surface and Interface Engineering for High Performance MaterialsXiamen UniversityXiamen361005China National engineering Research center of Light Alloy Net Forming School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai200240China School of Mechanical and Mining engineering Centre for Advanced Materials Processing and Manufacturing(AMPAM)The University of QueenslandSt.LuciaBrisbaneQLD4072Australia First Affiliated Hospital of Xi’an Jiao Tong University Xi’an710061China

A novel coating on the Mg1Mn alloy was produced by anodic polarization combined with hydrothermal treatment(AP+H)in 0.1 M Na2CO3 *** microstructure and protection of the coating were *** coating consisted of MgCO3,Mg(OH)2 and MgO,and provided satisfactory protection in 3.5 wt%NaCl with a corrosion rate of 0.07 mm y−1 in 72 ***,after that period,the corrosion rate of the specimen increased due to the damage of the *** failure of the coating was strongly related to the second phase particles(*** particles)or impurities in the *** AP+H coating is supposed to be used as a primer coating for Mg applications in kitchen ware,biomedical areas or industry.

关键词： Coating Magnesium alloy Hydrothermal corrosion resistance