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Fabrication and characterization of novel biodegradable zn-Mn-Cu alloys

Journal of Materials Science & Technology 2018年第6期34卷 1008-1015页

作者： Zhang-Zhi Shi Jing Yu Xue-Feng Liu Lu-Ning Wang School of Materials Science and Engineering University of Science and Technology Beijing

zn-Mn-Cu alloys with micro-alloying of Mn and Cu in zn are developed as potential biodegradable met- als. Although the as-cast alloys are very brittle, their ductilities are significantly improved through hot rolling. Among the as-cast and the as-hot-rolled alloys, as-hot-rolled zn-0.35Mn-0.41 Cu alloy has the best comprehensive property. It has yield strength of 198.4 ± 6.7 MPa, tensile strength of 292.4 ± 3.4 MPa, elongation of 29.6 ±3.8% and corrosion rate of 0.050-0.062 mm a^-1. A new ternary phase is characterized and determined to be MnCuzn18, which is embedded in Mnzn13, resulting in a coarse cellular/dendritic Mnzna3-MnCuzn18 compound structure in zn-0.75 Mn-0.40Cu alloy. Such a coarse compound structure is detrimental for wrought alloy properties, which guides future design of zn-Mn-Cu based alloys. The preliminary research indicates that zn-Mn-Cu alloy system is a promising candidate for potential cardiovascular stent applications.

关键词： zn alloys Biodegradability Strength Ductility Corrosion behavior

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Machine learning design of 400 MPa grade biodegradable zn-Mn based alloys with appropriate corrosion rates

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International Journal of Minerals,Metallurgy and Materials 2024年第12期31卷 2727-2736页

作者： Wangzhang Chen Wei Gou Yageng Li Xiangmin Li Meng Li Jianxin Hou Xiaotong Zhang Zhangzhi Shi Luning Wang Beijing Advanced Innovation Center for Materials Genome Engineering State Key Laboratory for Advanced Metals and MaterialsSchool of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijing 100083China Institute of Materials Intelligent Technology Liaoning Academy of MaterialsShenyang 110004China School of Computer and Communication Engineering Shunde Innovation SchoolUniversity of Science and Technology BeijingShunde 528399China

The commonly used trial-and-error method of biodegradable zn alloys is costly and *** this study,based on the self-built database of biodegradable zn alloys,two machine learning models are established by the first time to predict the ultimate tensile strength(UTS)and immersion corrosion rate(CR)of biodegradable zn alloys.A real-time visualization interface has been established to design zn-Mn based alloys;a representative alloy is *** tensile mechanical properties and immersion corrosion rate tests,its UTS reaches 420 MPa,and the prediction error is only 0.95%.CR is 73μm/a and the prediction error is 5.5%,which elevates 50 MPa grade of UTS and owns appropriate corrosion ***,influences of the selected features on UTS and CR are discussed in *** combined application of UTS and CR model provides a new strategy for synergistically regulating comprehens-ive properties of biodegradable zn alloys.

关键词： zn alloys machine learning alloy design performance prediction

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Structural and temporal dynamics analysis of zinc-based biomaterials:History,research hotspots and emerging trends

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Bioactive Materials 2024年第5期35卷 306-329页

作者： Kunshan Yuan Chengchen Deng Lili Tan Xiangxiu Wang Wenhua Yan Xiaozhen Dai Ruolin Du Yufeng Zheng Haijun Zhang Guixue Wang Key Laboratory for Biorheological Science and Technology of Ministry of Education State and Local Joint Engineering Laboratory for Vascular ImplantsBioengineering College of Chongqing UniversityChongqing400030China National United Engineering Laboratory for Biomedical Material Modification Dezhou251100China JinFeng Laboratory Chongqing401329China Department of Materials Science and Engineering College of EngineeringPeking UniversityBeijing100871China School of Biosciences and Technology Chengdu Medical CollegeChengdu610500China Shanghai Tenth People’s Hospital School of MedicineTongji UniversityShanghai200092China

Objectives:To examine the 16-year developmental history,research hotspots,and emerging trends of zinc-based biodegradable metallic materials from the perspective of structural and temporal ***:The literature on zinc-based biodegradable metallic materials in WoSCC was *** characteristics,the evolution of active topics and development trends in the field of zinc-based biodegradable metallic materials were analyzed using the bibliometric tools CiteSpace and ***:Over the past 16 years,the field of zinc-based biodegradable metal materials has remained in a hotspot stage,with extensive scientific *** addition,there are 45 subject categories and 51 keywords in different research periods,and 80 papers experience citation *** clustering anchored 3 emerging research subfields,namely,#1 plastic deformation#4 additive manufacturing#5 surface *** keyword alluvial map shows that the longest-lasting research concepts in the field are mechanical property,microstructure,corrosion behavior,etc.,and emerging keywords are additive manufacturing,surface modification,dynamic recrystallization,*** most recent research on reference clustering has six ***,#0 microstructure,#2 sem,#3 additive manufacturing,#4 laser powder bed fusion,#5 implant,and#7 ***:The results of the bibliometric study provide the current status and trends of research on zinc-based biodegradable metallic materials,which can help researchers identify hot spots and explore new research directions in the field.

关键词： Zinc-based biomaterials zn alloys Biodegradable stent Bone defect repair Vascular implant Bibliometric

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