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Effect of rare earth content on microstructure and corrosion resistance of hot-dip Zn-5Al alloy coated steel wire for bridge cables

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Journal of Iron and Steel Research International 2023年第10期30卷 2101-2110页

作者： Xiao-xiong Zhu Yi-fu Shen Cheng-tao Li Xiang Dai Guo-hao Xiao College of Materials Science and Technology Nanjing University of Aeronautics and Astronautics(NUAA)Nanjing 211106JiangsuChina Jiangsu Tokyo Rope Co. Ltd.Jiangyin 214425JiangsuChina Nanjing Vocational University of Industry Technology Nanjing 210023JiangsuChina

The effects of the content of rare earth elements on the microstructure and properties of hot-dip Zn-5 Al alloy steel wire for bridge cables were *** microstructure of the hot-dip coating was analyzed using an optical microscope and a scanning electron microscope equipped with an energy-dispersive *** bonding force between the hot-dip coating and steel wire was determined by the winding *** corrosion resistance of the steel wire hot-dip coating was tested by the electrochemical *** hot-dip Zn-5A1 alloy coating has a corrosion-resistant structure composed of a zinc-rich phase and an aluminum-rich *** to the enhanced bonding force,the micro structure of the hot-dip coating of the Zn-5A1 alloy with rare earth elements is more compact and uniform than that without rare earth *** addition of rare earth elements improves the corrosion resistance of Zn-5A1 alloy coated steel *** to the rare earth segregation,which prevents the corrosion of the grain boundary and enhances the anti-intergranular corrosion performance,steel wire exhibits the optimum corrosion resistance when the content of rare earth elements is 0.08 wt.%.

关键词： Bridge cable steel wire Hot dipping rare earth content Corrosion resistance Microstructure

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Improvement of the microstructure and magnetic properties of(La,Ce)-Fe-B nanocrystalline ribbons

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Chinese Physics B 2023年第7期32卷 521-529页

作者：连李昱张晓伟刘颖李军王仁全 School of Materials Science and Engineering Sichuan UniversityChengdu 610065China Key Laboratory of Advanced Special Material&Technology Ministry of EducationSichuan UniversityChengdu 610065China

The obstacles of inferior microstructure and poor magnetic properties of(La,Ce)-Fe-B type magnets stand in the way of expanding their *** this work,(La,Ce)-Fe-B melt-spun ribbons were prepared with different La/Ce ratios and rare earth *** microstructure and magnetic properties of these ribbons were *** the La/Ce ratio increased,the fraction of the CeFe_(2)phase decreased and the β-La phase segregated among matrix grains,which deteriorated the coercivity of the *** the rare earth content effectively suppressed the β-La phase and improved the proportion of the matrix phase in the ***,the optimal alloy composite(La_(15)Ce_(85))_(14)Fe_(80)B_(6) has been obtained with modified microstructure and inhibited secondary *** ribbon performance was tested,with H_(cj)=4.51 kOe,B_(r)=6.29 kG and(BH)_(max)=6.81 MGOe.

关键词： (La,Ce)-Fe-B La/Ce ratio rare earth content secondary phases inhibition

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