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Biomedical rare-earth magnesium alloy:Current status and future prospects

Journal of Magnesium and Alloys 2024年第4期12卷 1260-1282页

作者： Mingli yang Cheng Chen Dongsheng Wang Yinjin Shao Wenhao Zhou Cijun Shuai youwen yang Xinghai Ning Institute of Additive Manufacturing Jiangxi University of Science and TechnologyNanchang 330013China Key Laboratory of Construction Hydraulic Robots of Anhui Higher Education Institutes Tongling UniversityTongling 244061China Department of Rehabilitation Ganzhou People’s HospitalGanzhou 341099China Shaanxi Key Laboratory of Biomedical Metallic Materials Northwest Institute for Non-Ferrous Metal ResearchXi’an 710016China State Key Laboratory of High Performance Complex Manufacturing Central South UniversityChangsha 410083China School of Mechanical and Electrical Engineering Jiangxi University of Science and TechnologyGanzhou 341000China College of Engineering and Applied Science Nanjing University210089China

Biomedical magnesium(Mg)alloys have garnered significant attention because of their unique biodegradability,favorable biocompatibility,and suitable mechanical *** incorporation of rare earth(RE)elements,with their distinct physical and chemical properties,has greatly contributed to enhancing the mechanical performance,degradation behavior,and biological performance of biomedical Mg ***,a series of RE-Mg alloys are being designed and investigated for orthopedic implants and cardiovascular stents,achieving substantial and encouraging research *** this work,a comprehensive summary of the state-of-the-art in biomedical RE-Mg alloys is *** physiological effects and design standards of RE elements in biomedical Mg alloys are ***,the degradation behavior and mechanical properties,including their underlying action are studied ***,the preparation techniques and current application status of RE-Mg alloys are ***,we address the ongoing challenges and propose future prospects to guide the development of high-performance biomedical Mg-RE alloys.

关键词： Magnesium alloy Rare earth elements Biodegradation behavior Mechanical performance Biological properties

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Influence of heat treatment on microstructure,mechanical and corrosion behavior of WE43 alloy fabricated by laser-beam powder bed fusion

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International Journal of Extreme Manufacturing 2024年第1期6卷 258-275页

作者： Chenrong Ling Qiang Li Zhe Zhang youwen yang Wenhao Zhou Wenlong Chen Zhi Dong Chunrong Pan Cijun Shuai College of Mechanical and Electrical Engineering Jiangxi University of Science and TechnologyGanzhou 341000People’s Republic of China School of Mechanical and Electronic Engineering Suzhou UniversitySuzhou 234000People’s Republic of China Shaanxi Key Laboratory of Biomedical Metal Materials Northwest Institute for Non-ferrous Metal ResearchXi’an 710016People’s Republic of China Department of Orthopedics First Afffliated Hospital of Gannan Medical CollegeGanzhou 341000People’s Republic of China School of Mechanical and Automotive Engineering South China university of technologyGuangzhou 510641People’s Republic of China State Key Laboratory of High-Performance Complex Manufacturing Central South UniversityChangsha 410083People’s Republic of China Double Medical Technology Inc. Xiamen 361026People’s Republic of China

Magnesium(Mg)alloys are considered to be a new generation of revolutionary medical ***-beam powder bed fusion(PBF-LB)is suitable for fabricating metal implants withpersonalized and complicated ***,the as-built part usually exhibits undesirable microstructure and unsatisfactory *** this work,WE43 parts were firstly fabricated by PBF-LB and then subjected to heat *** a high densification rate of 99.91%was achieved using suitable processes,the as-built parts exhibited anisotropic and layeredmicrostructure with heterogeneously precipitated Nd-rich *** heat treatment,fine and nano-scaled Mg24Y5particles were ***,theα-Mg grainsunderwent recrystallization and turned coarsened slightly,which effectively weakened thetexture intensity and reduced the *** a consequence,the yield strength and ultimate tensile strength were significantly improved to(250.2±3.5)MPa and(312±3.7)MPa,respectively,while the elongation was still maintained at a high level of 15.2%.Furthermore,the homogenized microstructure reduced the tendency of localized corrosion and favoredthe development of uniform passivation ***,the degradation rate of WE43 parts was decreased by an order of ***,in-vitro cell experiments proved their favorable biocompatibility.

关键词： laser-beam powder bed fusion WE43 alloys heat treatment mechanical performance biodegradation behavior

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机电类文摘机助翻译的错误剖析

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湖北工业大学学报 2024年第3期39卷 68-75页

作者：余金菊杨佑文湖北工业大学外国语学院湖北武汉430068

为提高基于CAT的摘要英译质量,对机电类论文英文摘要的机器译文进行了错误剖析,描述了机器译文在词汇错译、句法错译、以及篇章错译三大方面的典型错误形式。其错误原因主要与摘要中源语言句型复杂、专业术语较多以及中英文语言、文化... 详细信息

为提高基于CAT的摘要英译质量,对机电类论文英文摘要的机器译文进行了错误剖析,描述了机器译文在词汇错译、句法错译、以及篇章错译三大方面的典型错误形式。其错误原因主要与摘要中源语言句型复杂、专业术语较多以及中英文语言、文化差异有关。为了减少和避免上述错误,译者对译前、译后编辑以及对中英文语言、文化差异的掌握必不可少。

关键词：摘要机电计算机辅助翻译错误剖析

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喷涂法制备ZnAl-ER复合涂层结构与性能研究

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中国稀土学报 2024年第3期42卷 528-536页

作者：杨友文孙盈中苏禄水邓卜峰张雨刘继广方晓刚合肥工业大学材料科学与工程学院安徽合肥230009

采用空气喷涂工艺在粘结NdFeB磁环表面制备锌铝/环氧树脂(ZnAl-ER)复合涂层。利用扫描电子显微镜(SEM)、能谱仪(EDS)、X射线衍射(XRD)和3D激光共聚焦扫描显微镜(LCSM)对涂层形貌结构、化学成分进行了表征。ZnAl涂层表面为层状结构,孔隙... 详细信息

采用空气喷涂工艺在粘结NdFeB磁环表面制备锌铝/环氧树脂(ZnAl-ER)复合涂层。利用扫描电子显微镜(SEM)、能谱仪(EDS)、X射线衍射(XRD)和3D激光共聚焦扫描显微镜(LCSM)对涂层形貌结构、化学成分进行了表征。ZnAl涂层表面为层状结构,孔隙率高、粗糙度大。经过ER涂层的复合,ER渗透到ZnAl涂层孔隙中,可以有效地填补ZnAl表面的凹坑与孔隙,复合涂层表面粗糙度降低。ZnAl-ER涂层具有较好的腐蚀防护效果,其表面氧化速率明显降低。耐蚀性能研究表明,ZnAl-ER/NdFeB的耐中性盐雾(NSS)时长达到240 h,腐蚀电流密度较NdFeB磁环降低了约1个数量级。并且,所制备的涂层对粘结NdFeB磁环的磁性能影响较小。

关键词：粘结NdFeB 空气喷涂 ZnAl-ER复合涂层耐腐蚀性能磁性能

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Laser additive manufacturing of zinc:formation quality,texture,and cell behavior

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Bio-Design and Manufacturing 2023年第2期6卷 103-120页

作者： Mingli yang Liuyimei yang Shuping Peng Fang Deng Yageng Li youwen yang Cijun Shuai Institute of Additive Manufacturing Jiangxi University of Science and TechnologyNanchang 330013China Ganjiang Innovation Academy Chinese Academy of SciencesGanzhou 341119China The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education Central South UniversityChangsha 410078China NHC Key Laboratory of Carcinogenesis School of Basic Medical ScienceCentral South UniversityChangsha 410013China Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology BeijingBeijing 100083China Key Laboratory of Construction Hydraulic Robots of Anhui Higher Education Institutes Tongling UniversityTongling 244061China State Key Laboratory of High Performance Complex Manufacturing Central South UniversityChangsha 410083China

Laser powder bed fusion(LPBF)makes it possible for biodegradable zinc(Zn)to be used to produce customized orthopedic *** this research,we investigate the impact of laser power and scanning speed on the development of surface quality,relative densification,and texture during LPBF of Zn *** laser power was able to decrease melt viscosity and surface tension,which improved the metallurgical bonding between adjacent *** and twisted tracks also became continuous and *** speed could controlmolten-pool temperature to restrain grain natural orientation,achieving various crystal orientations and a weakened ***,it further avoided the thermal expansion and contraction caused by excessive energy storage and accumulation in the matrix,thus reducing the generation of high-dislocation *** a result,by selecting a reasonable laser power and scanning speed,the LPBF parts exhibited a flat surface morphology and a high density over 99.5%.Their average hardness,mechanical strength,and elongation reached 50.2 HV,127.8 MPa,and 7.6%,***,the parts displayed a moderate degradation rate and excellent osteogenic *** these results provide a basis for selecting process parameters to optimize the comprehensive properties of LPBF-processed Zn parts for biodegradable applications.

关键词： Zn implants Additive manufacturing Laser powder bed fusion Formation quality Texture Osteogenic properties

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In-situ deposition of apatite layer to protect Mg-based composite fabricated via laser additive manufacturing

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Journal of Magnesium and Alloys 2023年第2期11卷 629-640页

作者： youwen yang Changfu Lu Lida Shen Zhenyu Zhao Shuping Peng Cijun Shuai Institute of Bioadditive Manufacturing Jiangxi University of Science and TechnologyNanchang 330013China Jiangsu Key Laboratory of Precision and Micro-Manufacturing Technology Nanjing University of Aeronautics and AstronauticsNanjing 210016China Shenzhen Institute of Information Technology Shenzhen 518172China NHC Key Laboratory of Carcinogenesis School of basic Medical ScienceCentral South UniversityChangshaHunan 410013China School of energy and machinery engineering Jiangxi University of Science and TechnologyNanchang 330013China State Key Laboratory of High Performance Complex Manufacturing Central South UniversityChangsha 410083China

Biodegradable magnesium(Mg) and its alloy show huge potential as temporary bone substitute due to the favorable biocompatibility and mechanical compatibility. However, one issue deserves attention is the too fast degradation. In this work, mesoporous bioglass(MBG)with high pore volume(0.59 cc/g) and huge specific surface area(110.78 m^(2)/g) was synthesized using improved sol-gel method, and introduced into Mg-based composite via laser additive manufacturing. Immersion tests showed that the incorporated MBG served as powerful adsorption sites, which promoted the in-situ deposition of apatite by successively adsorbing Ca2+and HPO42-. Such dense apatite film acted as an efficient protection layer and enhanced the corrosion resistance of Mg matrix, which was proved by the electrochemical impedance spectroscopy measurements. Thereby, Mg based composite showed a significantly decreased degradation rate of 0.31 mm/year. Furthermore,MBG also improved the mechanical properties as well as cell behavior. This work highlighted the advantages of MBG in the fabrication of Mg-based implant with enhanced overall performance for orthopedic application.

关键词： Laser addictive manufacture Mg-based composite Mesoporous bioglass In-situ deposition Degradation behavior

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Microstructure development and biodegradation behavior of additively manufactured Mg-Zn-Gd alloy with LPSO structure

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Journal of Materials Science & Technology 2023年第13期144卷 1-14页

作者： youwen yang Chenrong Ling Yageng Li Shuping Peng Deqiao Xie Lida Shen Zongjun Tian Cijun Shuai Institute of Additive Manufacturing Jiangxi University of Science and TechnologyNanchang 330013China Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology BeijingBeijing 100083China The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education Xiangya HospitalCentral South UniversityChangsha 410078China NHC Key Laboratory of Carcinogenesis of Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine Cancer Research InstituteSchool of Basic Medical ScienceCentral South UniversityChangsha 410013China College of Mechanical and Electrical Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China State Key Laboratory of High Performance Complex Manufacturing Central South UniversityChangsha 410083China

Biodegradable magnesium(Mg)alloy has been considered as a new generation of orthopedic implant ***,local corrosion usually occurs since the severe micro-galvanic behavior amongα-Mg and precipitates,and results in too rapid *** this study,porous Mg-Zn-Gd part was fabricated using laser additive manufacturing combined with solution heat *** heat treatment,the precipitatedβ-(Mg,Zn)_(3) Gd phase dissolved inα-Mg,and reduced the energy threshold of stacking faults on basal planes,which finally triggered the formation of long period stacking ordered(LPSO)*** LPSO phases owned minor potential difference withα-Mg,thus causing less micro-galvanic corrosion ten-dency as compared toβ-(Mg,Zn)_(3) Gd *** importantly,they were uniformly distributed within theα-Mg grains and showed different orientations between adjacent *** a result,the LPSO-reinforced Mg-Zn-Gd tended to expand laterally during corrosion evolution,and achieved uniform degradation with a considerably reduced degradation rate of 0.34 mm/***,in-vitro cell tests further proved its favorable *** work highlighted the additively manufactured Mg-Zn-Gd with LPSO structure showed great potential for orthopedic application.

关键词： Additive manufacturing Mg alloy LPSO structure Biodegradation behavior Biocompatibility

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火电厂SCR多点独立分区测量的研究与应用

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自动化应用 2024年第3期65卷 181-183,187页

作者：胡小平严小龙杨有文江九稳国能重庆万州电力有限责任公司重庆404027

探讨了火电厂SCR多点独立分区测量系统的研究和应用,该系统通过等面积划分烟道,实现了烟气中NOx的多点准确测量,为SCR脱硝过程的优化运行提供了关键数据。系统的设计包括取样单元、预处理单元、控制单元,能实现任意流量域取样或全区域... 详细信息

探讨了火电厂SCR多点独立分区测量系统的研究和应用,该系统通过等面积划分烟道,实现了烟气中NOx的多点准确测量,为SCR脱硝过程的优化运行提供了关键数据。系统的设计包括取样单元、预处理单元、控制单元,能实现任意流量域取样或全区域取样。多管路预处理设计提高了处理效率,确保了样气的质量,多元化的控制与显示功能能满足不同测量要求,确保系统的灵活性和适应性。实际投运后,该系统在提高脱硝效率、降低氨逃逸量方面取得了显著成果,对于实现火电厂的NOx超低排放目标具有重要意义。

关键词：浓度分布 SCR脱销分区测量

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铸造工艺对Mg-12Zn-1Y合金组织与力学性能的影响

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特种铸造及有色合金 2024年第2期44卷 198-202页

作者：伍德超方晓刚张天阳刘继广杨友文吕书林吴树森合肥工业大学材料科学与工程学院合肥230009 高性能铜合金材料及成形教育部工程研究中心合肥230009 华中科技大学材料成形与模具技术全国重点实验室武汉430074

特定Zn、Y含量的Mg-Zn-Y合金能原位形成二十面体准晶增强I相(I-Mg_(3)Zn_(6)Y),但常规铸造凝固条件下形成的准晶组织粗大,难以发挥其性能优势。研究了重力铸造、挤压铸造及流变挤压铸造工艺制备的Mg-12Zn-1Y合金的组织和力学性能。结果... 详细信息

特定Zn、Y含量的Mg-Zn-Y合金能原位形成二十面体准晶增强I相(I-Mg_(3)Zn_(6)Y),但常规铸造凝固条件下形成的准晶组织粗大,难以发挥其性能优势。研究了重力铸造、挤压铸造及流变挤压铸造工艺制备的Mg-12Zn-1Y合金的组织和力学性能。结果表明,在重力铸造的合金组织中,大量粗大的I相和Mg_(7)Zn_(3)相聚集在一起。挤压铸造使I相转变为细小的层片状,且Mg_(7)Zn_(3)含量降低。对于流变挤压铸造的合金,随着制浆过程中超声功率增大,α-Mg晶粒得到较大程度的细化和球化,共晶组织间距明显减小,而随着超声功率持续增加到2400 W时,共晶组织出现一定程度富集。当超声功率为1600 W时,合金的力学性能最优,屈服强度、抗拉强度和伸长率分别为185 MPa、276 MPa和6.8%,相较于挤压铸造分别提高了35.0%、24.9%和142.9%。

关键词： Mg-Zn-Y合金准晶铸造工艺微观组织力学性能

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Interface engineering via molecules/ions/groups for electrocatalytic water splitting

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Nano Research 2024年第9期17卷 7864-7879页

作者： Defang Ding youwen Liu Fan Xia Engineering Research Center of Nano-Geomaterials of Ministry of Education Faculty of Materials Science and ChemistryChina University of GeosciencesWuhan 430074China State Key Laboratory of Materials Processing and Die&Mould Technology and School of Materials Science and Engineering Huazhong University of Science and Technology WuhanHubei 430074China

The electrochemical water splitting to produce hydrogen converts electric energy into clean hydrogen energy,which is a groundbreaking concept of energy *** achieve high efficiency,numerous strategies have been developed to enhance the performance of *** these,interface engineering with molecules/ions/groups,serves as a versatile approach for optimizing the performance of electrocatalysts in water *** the basis of numerous achievements in high-performance electrocatalysts engineered through molecules/ions/groups at interface,a comprehensive understanding of these advancements is crucial for guiding future ***,after providing a concise overview of the background,the interface engineering via molecules/ions/groups for electrocatalytic water splitting is demonstrated from three ***,the engineering of electronic state of electrocatalysts by molecules/ions/groups at interface to reduce the Gibbs free energy of the corresponding ***,the modification of local microenvironment surrounding electrocatalysts via molecules/ions/groups at interface to enhance the transfer of reactants and ***,the protection of electrocatalysts with molecule/ion/group fences improves their durability,including protecting active sites from leaching and defending them against harmful *** fundamental principles of these three aspects are outlined for each,along with pertinent ***,several research directions and challenges are proposed.

关键词： electrocatalyst water splitting interface engineering molecules/ions/groups

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