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Journal of Magnesium and Alloys 2024年第3期12卷 1170-1185页

作者： Junping Shen Tao Lai Zheng Yin Yang Chen Kun Wang Hong Yan Honggun Song Ruiliang Liu Chao Luo Zhi Hu School of Advanced Manufacturing Nanchang UniversityNanchang 330031China Institute for Advanced Study Nanchang UniversityNanchang 330031China Singapore Centre for Environmental Life Sciences Engineering Nanyang Technological University60 Nanyang Drive 637751Singapore

Revealing the localized corrosion process of Mg alloy is considered as one of the most significant ways for improving its corrosion *** reliable monitor should be high distinguishability and real-time in liquid ***,Mg-9Al-1Fe and Mg-9Al-1Fe-1Gd alloys were designed to highlight the impact of intermetallic on the corrosion ***-situ AFM with a special electrolyte circulation system and quasi-in-situ SEM observation were used to monitor the corrosion process of the designed ***-EDS and TEM-SAED were applied to identify the intermetallic in the designed alloys,and their volta potentials were measured by *** to the real-time and real-space in-situ AFM monitor,the corrosion process consisted of dissolution of anodicα-Mg phase,accumulation of corrosion products around cathodic phase and shedding of some fine cathodic ***,the localized corrosion process of Mg alloy was revealed combined with the results of the monitor of corrosion process and Volta potential difference.

关键词： Magnesium localized corrosion In-situ AFM SKPFM corrosion behaviour.

localized corrosion Characteristics of Nickel Alloys： A Review

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Acta Metallurgica Sinica(English Letters) 2017年第4期30卷 296-305页

作者： Helmuth Sarmiento Klapper Natalia S. Zadorozne Raul B. Rebak Center for Materials Research Baker Hughes 29221 CelleGermany Instituto de Materiales de Misiones (IMAM) UNaMCONICET 3300 Posadas Argentina GE Global Research Schenectady NY 12309 USA

There are a great variety of commercial nickel alloys mainly because nickel is able to dissolve a large amount of alloying elements while maintaining a single ductile austenitic phase. Nickel alloys are generally designed for and used in highly aggressive environments, for example, those where stainless steels may experience pitting corrosion or environmentally assisted cracking. While nickel alloys are generally resistant to pitting corrosion in chloride-containing environments, they may be prone to crevice corrosion attack. Addition of chromium, molybdenum and tungsten increases the localized corrosion resistance of nickel alloys. This review on the resistance to localized corrosion of nickel alloys includes specific environments such as those present in oil and gas upstream operations, in the chemical process industry and in seawater service.

关键词： Nickel alloys localized corrosion Oil and gas Seawater Chemical process industry

localized corrosion and Stress corrosion Cracking Behavior of AA7003 in a 3.5 wt% NaCl Aqueous Solution

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Journal of Wuhan University of Technology(Materials Science) 2020年第5期35卷 986-995页

作者： QI Xing SUN Bin CHEN Xiaoming SONG Renguo School o f Materials Science and Engineering Changzhou UniversityChangzhou 213164China Jiangsu Key Laboratory o f Materials Surface Science and Technology Changzhou UniversityChangzhou 213164China Jiangsu Collaborative Innovation Center o f Photovolatic Science and Engineering Changzhou UniversityChangzhou 213164China Key Laboratory o f Research on Hydraulic and Hydro-Power Equipment Surface Engineering Technology1 o f Zhejiang Province Hangzhou 310012China

The microstructure,localized corrosion (LC) and stress corrosion cracking (SCC) behavior of 7003 aluminum alloy (AA7003) under various aging treatments (peak aging (PA),double peak aging (DPA),regression and re-aging (RRA)) were investigated by means of transmission electron microscope (TEM),scanning electron microscopy (SEM),electrochemical impendence spectroscopy (EIS) and slow strain rate tensile *** results of TEM showed a discontinuous distribution of grain boundary precipitates of AA7003 under DPA and RRA treatments,which is beneficial for increasing the resistance of LC and ***,LC was found initiating firstly on intermetallics which caused the dissolution of surrounding matrix,then pitting holes were formed and developed into *** addition,the SCC process of AA7003 could be divided into two stages,i e,initial pre-cracking and breeding *** EIS analysis,cross-section morphologies and fracture surfaces of specimens indicated that DPA and RRA treatments significantly decreased the crack growth rate during breeding cracking stage,especially for RRA treatment.

关键词： 7003 aluminum alloy localized corrosion stress corrosion cracking

localized corrosion in Copper Tubes by Volatile Organic Substance

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International Journal of Minerals,Metallurgy and Materials 1999年第2期13卷 129-132页

作者： Takenori Notoya(Laboratory of corrosion Engineering, Graduate School of Engineering, Hokkaido University, Sapporo, Japan) Laboratory of corrosion Engineering Graduate School of Engineering Hokkaido University Sapporo Japan

An unusual form of localized corrsion in copper tubes was detected early in service and in leakage tests after *** morphology of this corrosion is similar to that of an ant's nest when viewed in cross section. The cor... 详细信息

关键词： copper tubes localized corrosion volatile organic substance heat-transfer units

Insight into the triggering effect of(Al,Mg,Ca,Mn)-oxy-sulfide inclusions on localized corrosion of weathering steel

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Journal of Materials Science & Technology 2021年第5期64卷 99-113页

作者： Pan Liu Qinhao Zhang Xinran Li Jiming Hu Fahe Cao Department of Chemistry Zhejiang UniversityHangzhou310027China School of Materials Sun Yat-sen UniversityGuangzhou510006China

The surface properties of weathering steel(WS)is very important for its service performance and safety,and the localized corrosion induced by inclusions is closely related to the surface properties of WS and its *** the current work,a common spherical(Al,Mg,Ca,Mn)-oxy-sulfide inclusion was selected to investigate the corrosion evolution of complex inclusion and its effect on localized corrosion on WS *** results indicate the inclusion in WS consists of(Ca,Mn)sulfides part and(Ca,Al,Mg)oxides part with complex core-shell *** preferential dissolution occurs in(Ca,Mn)sulfides part as well as metal matrix around the ***,both parts of the inclusions with poor conductivity and high-density dislocation at metal matrix around the inclusions was found,which suggests that traditional micro-galvanic corrosion cell may not be the cause of inclusion-induced localized corrosion on WS surface at initial stage of *** variation in maximum and average depth around the inclusion or selected region with immersion time indicates that localized corrosion induced by inclusions is overwhelmed by uniform corrosion of WS in the latter stage of immersion,then the rust formed on WS surface consists of two layers.

关键词： Weathering steel Inclusions Marine environment localized corrosion Rust

Effect of nonmetallic inclusions on localized corrosion of spring steel

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International Journal of Minerals,Metallurgy and Materials 2021年第3期28卷 390-397页

作者： Wei-ning Shi Shu-feng Yang Jing-she Li School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China

Certain inclusions in high-strength 60Si2Mn-Cr spring steel result in poor resistance to localized *** this work,to study the effect of inclusions on the localized corrosion behavior of spring steel,accelerated corrosion tests were performed by immersing spring steel in 3wt%FeCl_(3)solution for different *** results show that severe corrosion occurred in areas of clustered CaS *** inclusions containing Ca and Mg induced the strongest localized corrosion *** the case of(Ca,Mn,Mg)S inclusions,the ability to induce localized corrosion susceptibility is ranked as follows:MgS>CaS>***,CaS,(Ca,Mn)S,and(Ca,Mn,Mg)S inclusions were mainly responsible for inducing environmental embrittlement.

关键词： steel localized corrosion inclusions accelerated corrosion tests

Initiation and propagation of localized corrosion induced by(Zr,Ti,Al)-O_(x) inclusions in low-alloy steels in marine environment

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Journal of Iron and Steel Research International 2021年第4期28卷 453-463页

作者： Wen-zhui Wei Kai-ming Wu Jing Liu Lin Cheng Xian Zhang The State Key Laboratory of Refractories and Metallurgy Hubei Province Key Laboratory of Systems Science in Metallurgical ProcessCollaborative Innovation Center for Advanced SteelsWuhan University of Science and TechnologyWuhan 430081HubeiChina

The effects of inclusions on localized corrosion of Zr–Ti deoxidized low-alloy steels in marine environment were investigated by various analytical techniques including scanning electron microscopy with X-ray microanalysis(SEM/EDS),confocal Raman microscopy(CRM),and in situ scanning vibrating electrode technique(SVET).It was found that complex(Zr,Ti,Al)-O_(x)inclusions were responsible for the initiation of localized *** corrosion pref-erentially occurred at Fe matrix adjacent to these inclusions and formed *** the early stage of corrosion,catalytic-occluded cells and the diffusion of chloride ions played a major role in the propagation of corrosion,further accelerating the dissolution of Fe matrix and(Zr,Ti,Al)-O_(x)*** SVET and CRM results,it revealed that the maximum anodic current density in local area gradually decreased with prolonged exposure time,indicating that corrosion products covered the steel surface and lowered the propagation rate of *** the later stage of corrosion,the barrier effect of corrosion products played an important role in inhibiting localized corrosion.

关键词： (Zr,Ti,Al)-O_(x)inclusion localized corrosion Low-alloy steel Marine environment Scanning vibrating electrode technique

localized corrosion OF MICROCRYSTALS OF 1Crl8Ni9Ti STAINLESS STEEL

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Acta Metallurgica Sinica(English Letters) 1989年第8期2卷 143-145页

作者： LIU Dacheng CAO Chunan WANG Fuhui LOU Hanyi ZHANG Lixin

The resistances against localized corrosion of 1Cr18Ni9Ti microcrystals with normal grain size and bcc structure obtained hy magnetron sputtering have been *** two kinds of microcrystals with (110) and (211) textures respectively were obtained under different sputtering *** microcrystals were found to have better resistance against local- ized corrosion than the crystal with normal *** microcrystal with (110) preferred orientation has larger resistance to localized corrosion than that with (211) preferred orientation.

关键词： microcrystal localized corrosion magnetron sputtering

Enhanced localized and uniform corrosion resistances of bulk nanocrystalline 304 stainless steel in high-concentration hydrochloric acid solutions at room temperature

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Journal of Materials Science & Technology 2018年第12期34卷 2498-2506页

作者： S.G.Wang M.Sun Y.H.Xu K.Long Z.D.Zhang Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of Sciences

The localized and uniform corrosion resistances of bulk nanocrystalline 304 stainless steel（NC-304 SS）produced by severe rolling technique, and its conventional polycrystalline 304 stainless steel（CC-304 SS）counterpart, were investigated in high-concentration hydrochloric acid solutions at room ***-304 SS can scarcely suffer from localized corrosion in 4 mol/L and 5 mol/L HCl solutions during 5-day immersion tests, and in 1-3 mol/L HCl solutions during thirty-five-day immersion tests. The corrosion rate of NC-304 SS was also less than that of CC-304 SS during these immersion tests. The improved localized and uniform corrosion resistances of NC-304 SS were explained in terms of the adsorption and chemical activity of Cl;on NC-304 SS and CC-304 SS characterized by X-ray photoelectron spectroscopy,and the valence electron configurations of NC-304 SS and CC-304 SS were characterized by ultra-violet photoelectron spectroscopy rather than conventional electrochemical results.

关键词： Stainless steels localized corrosion Severe rolling technique X-ray photoelectron spectroscopy Ultra-violet photoelectron spectroscopy

A Study on localized Streaking corrosion of AA7075 Using Difference Viewer Technique

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A Study on Localized Streaking Corrosion of AA7075 Using Dif...