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| 1 | 处在变革中的医用金属材料显示文摘进入21世纪,医用金属材料正在发生变革。以可降解金属、纳米晶金属、大块非晶合金为代表的新型医用金属材料被尝试作为植入材料,材料属性正在从生物惰性向生物活性和生物功能化(抗菌、抗增生、抗肿瘤)方向发展,同时3D打印技术和薄膜技术也在被尝试用于金属植入器械的先进制造以及智能化。本文综合评述了处于变革中的医用金属材料研究现状,展望了新型医用金属材料功能化、复合化、智能化的未来发展趋势。 | 郑玉峰 吴远浩 | 2017 | 金属学报2017，53，3： | 53 |
| 2 | In vitro degradation of MAO/PLA coating on Mg-1.21Li-1.12Ca-1.0Y alloy显示文摘 | Rong-Chang ZENG Wei-Chen QI Ying-Wei SONG Qin-Kun HE Hong-Zhi CUI En-Hou HAN | 2014 | Frontiers of Materials Science2014，8，4： | 7 |
| 3 | 镁合金表面可降解聚合物改性涂层研发及应用进展显示文摘相比于钛合金、不锈钢、钴基合金等传统生物医用金属材料,镁合金不仅具有生物可降解特性,而且其弹性模量与人体骨骼很接近,不容易产生“应力屏蔽”,被誉为“新一代先进生物材料”。但镁合金在人体内降解速率过快,由此产生的力学失稳和过量降解产物在体内的代谢吸收隐患限制了其在外科植介入医疗领域的大量推广应用。而可生物降解或可吸收的天然和合成高分子(聚合物)是全球量大面广的一类质轻、多功效、生物安全性好的生物医用材料,若将其作为可降解镁合金表面的特种防护涂层并解决好两者表界面之间的生物功能性和力学相容性,将是开发先进镁合金材料及其应用的重要发展方向。本文综述了生物可降解的镁基合金表面天然及合成高分子涂层的最新研究进展,并对其未来的研发及应用发展趋势提出展望。 | 冯名城 李卫 符青云 余森 于振涛 | 2021 | 稀有金属材料与工程2021，50，9： | 6 |
| 4 | In vitro corrosion of Mg–1.21Li–1.12Ca–1Y alloy显示文摘The influence of the microstructure on mechanical properties and corrosion behavior of the Mg–1.21Li–1.12Ca–1Y alloy was investigated using OM, SEM, XRD, EPMA, EDS, tensile tests and corrosion measurements. The results demonstrated that the microstructure of the Mg–1.21Li–1.12Ca–1Y alloy was characterized by α-Mg substrate and intermetallic compounds Mg2 Ca and Mg24Y5. Most of the fine Mg2 Ca particles for the as-cast alloy were distributed along the grain boundaries, while for the as-extruded along the extrusion direction. The Mg24Y5 particles with a larger size than the Mg2 Ca particles were positioned inside the grains. The mechanical properties of Mg–1.21Li–1.12Ca–1Y alloy were improved by the grain refinement and dispersion strengthening. Corrosion pits initiated at the α-Mg matrix neighboring the Mg2 Ca particles and subsequently the alloy exhibited general corrosion and filiform corrosion as the corrosion product layer of Mg(OH)2and Mg CO3 became compact and thick. | Rongchang Zeng Weichen Qi Fen Zhang Hongzhi Cui Yufeng Zheng | 2014 | Progress in Natural Science:Materials International2014，24，5： | 4 |
| 5 | Preparation, microstructure and degradation performance of biomedical magnesium alloy fine wires显示文摘With the development of new biodegradable Mg alloy implant devices, the potential applications of biomedical Mg alloy fine wires are realized and explored gradually. In this study, we prepared three kinds of Mg alloy fine wires containing 4 wt% RE(Gd/Y/Nd) and 0.4 wt% Zn with the diameter less than 0.4 μm through casting, hot extruding and multi-pass cold drawing combined with intermediated annealing process. Their microstructures, mechanical and degradation properties were investigated. In comparison with the corresponding as-extruded alloy, the final fine wire has significantly refined grain with an average size of 3–4 μm, and meanwhile shows higher yield strength but lower ductility at room temperature. The degradation tests results and surface morphologies observations indicate that Mg–4Gd–0.4Zn and Mg–4Nd–0.4Zn fine wires have similar good corrosion resistance and the uniform corrosion behavior in SBF solution. By contrast, Mg–4Y–0.4Zn fine wire shows a poor corrosion resistance and the pitting corrosion behavior. | Jing Bai Lingling Yin Ye Lu Yiwei Gan Feng Xue Chenglin Chu Jingli Yan Kai Yan Xiaofeng Wan Zhejun Tang | 2014 | Progress in Natural Science:Materials International2014，24，5： | 3 |
| 6 | Preliminary study on modelling, fabrication by photo-chemical etching and in vivo testing of biodegradable magnesium AZ31 stents显示文摘Magnesium metal(Mg)is a promising material for stent applications due to its biocompatibility and ability to be resorbed by the body.Manufacturing of stents by laser cutting has become an industry standard.Our alternative approach uses photo-chemical etching to transfer a pattern of the stent onto a Mg sheet.In this study,we present three stages of creating and validating a stent prototype,which includes design and simulation using finite element analysis(FEA),followed by fabrication based on AZ31 alloy and,finally,in vivo testing in peripheral arteries of domestic pigs.Due to the preliminary character of this study,only six stents were implanted in two domestic farm pigs weighing 25-28 kg and they were evaluated after 28 days,with an interim follow-up on day 14.The left and right superficial femoral,the left iliac,and the right renal artery were selected for this study.The diameters of the stented artery segments were evaluated at the time of implantation,on day 14 and then,finally,on day 28,by quantitative vessel analysis(QVA)using fluoroscopic imaging.Optical Coherence Tomography(OCT)imaging displayed some malposition,breaks,stacking,and protrusion into the lumen at the proximal,distal,and mid-sections of the stented arteries.The stents degraded with time,but simultaneously became embedded in the intima.After 28 days,the animals were euthanized,and explanted vessels were fixed for micro-CT imaging and histology studies.Micro-CT imaging revealed stent morphological and volumetric changes due to the in-body degradation.An in vivo corrosion rate of 0.75 mm/year was obtained by the CT evaluation.The histology suggested no-life threatening effects,although moderate injury,inflammation,and endothelialization scores were observed. | Bala Subramanya Pavan Kumar Kandala Guangqi Zhang Capucine LCorriveau Mark Paquin Madeleine Chagnon Dana Begun Vesselin Shanov | 2021 | Bioactive Materials2021，6，6： | 2 |
| 7 | Impact behaviors of poly-lactic acid based biocomposite reinforced with unidirectional high-strength magnesium alloy wires显示文摘A novel poly-lactic acid(PLA) based biocomposite reinforced with unidirectional high-strength magnesium alloy(Mg-alloy) wires for bone fracture fixation was fabricated by hot-compressing process. The macroscopical and microscopical impact behaviors of the biocomposite were investigated using impact experiments and finite element method(FEM), respectively. The results indicated that the biocomposite had favorable impact properties due to the plastic deformation behavior of Mg-alloy wires during impact process. While the content of Mg-alloy wires reached20 vol%, the impact strength of the composite could achieve 93.4 k J/m2, which is approximate 16 times larger than that of pure PLA fabricated by the same process. According to FEM simulation results, the complete destruction life of the composites during impact process increased with increasing volume fraction of Mg-alloy wires, indicating a high impact-bearing ability of the composite for bone fracture fixation.Simultaneously, the energy absorbed by Mg-alloy wires in the composites had a corresponding increase. In addition, it denoted that the impact properties of the composites are sensitive to the initial properties of the matrix material. | Xuan Li Chao Guo Xiaokai Liu Lei Liu Jing Bai Feng Xue Pinghua Lin Chenglin Chu | 2014 | Progress in Natural Science:Materials International2014，24，5： | 1 |
| 8 | Development and prospects of degradable magnesium alloys for structural and functional applications in the fields of environment and energy显示文摘Magnesium and its alloys have such advantages with lightweight, high specific strength, good damping, high castability and machinability,which make them an attractive choice for applications where weight reduction is important, such as in the aerospace and automotive industries.However, their practical applications are still limited because of their poor corrosion resistance, low high temperature strength and ambient formability. Based on such their property shortcomings, recently degradable magnesium alloys were developed for broadening their potential applications. Considering the degradable Mg alloys for medical applications were well reviewed, the present review put an emphasis on such degradable magnesium alloys for structural and functional applications, especially the applications in the environmental and energy fields. Their applications as fracture ball in fossil energy, sacrificial anode, washing ball, and as battery anodes, transient electronics, were summarized. The roles of alloying elements in magnesium and the design concept of such degradable magnesium alloys were discussed. The existing challenges for extending their future applications are explored. | Yuanding Huang Yaping Zhang Jiangfeng Song Fusheng Pan Regine Willumeit-Römer Karl Ulrich Kainer Norbert Hort | 2023 | Journal of Magnesium and Alloys2023，11，11： | 0 |
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