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Zr-xNb-4Sn alloys with low Young's modulus and magnetic susceptibility for biomedical implants

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Progress in Natural Science:materials International 2021年第5期31卷 772-778页

作者： Renhao Xue Dong Wang Yueyan Tian Jiang Wang Libin Liu Ligang Zhang School of Material Science and Engineering Central South University Guangxi Key Laboratory of Information materials Guilin University of Electronic Technology State Key Laboratory of Powder Metallurgy Central South University

The microstructure,mechanical and magnetic properties of Zr-x(8,9,10,wt.%)Nb-4 Sn alloys were investigated to obtain novel Zr-based alloy with low Young’s modulus and magnetic susceptibility for biomedical *** homogenization annealing,hot forging and solution annealing,Zr-8 Nb-4 Sn,Zr-9 Nb-4 Sn and Zr-10 Nb-4 Sn alloys were composed of β+α" phase,β+α" phase,β+ω phase,*** temperature at which the α" and ωphase were transformed into β phase during the heating process was about 200 ℃ and the phase transformation temperature decreased with the increase of Nb *** all the Zr-x(x=8,9,10)Nb-4 Sn(wt.%) alloys,Zr-9 Nb-4 Sn alloy had the lowest Young’s modulus of 46.6 GPa and the low magnetic susceptibility of1.294×10-6cm~3 g-1,which has a good application prospect for biomedical applications.

关键词： Zirconium-based alloys Microstructure Mechanical properties Phase transformation biomedical materials

Synthesis and Characterization of Tb-incorporated Apatite Nano-scale Powders

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Journal of materials Science & Technology 2012年第9期28卷 773-778页

作者： L.J. Sun P.F. Ni D.G. Guo C.Q. Fang J. Wang F. Yang X.F. Huang Y.Z. Hao H. Zhu K.W. Xu State Key Laboratory for Mechanical Behavior of materials School of Materials Science and Engineering Xi'an Jiaotong University Xi'an 710049 China School of Printing and Packaging Engineering Xi'an University of Technology Xi'an 710048 China Xi'an University of Arts and Science Xi'an 710065 China

Nano-scale Tb-incorporated apatite （nano-Tb-AP） particles with different Tb contents （Tb/（Tb＋Ca）） of 0%, 5%, 10% and 20% were synthesized through a simple wet chemical method in this study. The crystal structure, thermal stabilities, chemical groups, crystal morphologies and crystal sizes of the nano--Tb-AP particles were characterized by X-ray diffraction （XRD）, Fourier transform infrared spectroscopy （FTIR）, and transmission electron microscopy （TEM）, respectively. It was found that lattice constants, particle sizes, crystalline and thermal stability varied with the doped Tb contents. With the increasing of Tb content, the lattice constants, particle size, length/diameter ratio, crystalline and thermal stability of nano-Tb-AP gradually decrease. Especially, almost all the 20%Tb-AP nano particles had been decomposed at 1200 ℃ while only a few of the decomposed products （β-TCP） were detected in the Tb-free nano apatite powders： This kind of nano-scale Tb-incorporated apatite exhibits an extremely potential clinic application because it integrates both the excellent biological functions of Tb element and apatite in human body.

关键词： Nano-scale powder Terbium (Tb) Wet chemical approach Apatite biomedical materials

Improving the fretting biocorrosion of Ti6Al4V alloy bone screw by decorating structure optimised TiO2 nanotubes layer

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Journal of materials Science & Technology 2020年第14期47卷 47-55页

作者： Jiajun Luo Maryam Tamaddon Changyou Yan Shuanhong Ma Xiaolong Wang Feng Zhou Chaozong Liu Institute of Orthopaedic&Musculoskeletal Science Division of Surgery&Interventional ScienceUniversity College LondonRoyal National Orthopaedic HospitalStanmoreHA74LPUnited Kingdom State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou730000China

TiO2 nanotubes(NT)has been demonstrated its potential in orthopaedic applications due to its enhanced surface wettability and ***,the fretting biocorrosion is the main concern that limited its successfully application in orthopaedic *** this study,a structure optimised thin TiO2 nanotube(SONT)layer was successfully created on Ti6Al4V bone screw,and its fretting corrosion performance was investigated and compared to the pristine Ti6Al4V bone screws and NT decorated screw in a bone-screw fretting simulation *** results have shown that the debonding TiO2 nanotube from the bone screw reduced significantly,as a result of structure *** SONT layer also exhibited enhanced bio-corrosion resistance compared pristine bone screw and conventionally NT modified bone *** is postulated that interfacial layer between TiO2 nanotube and Ti6Al4V substrate,generated during structure optimisation process,enhanced bonding of TiO2 nanotube layer to the Ti6Al4V bone screws that leading to the improvement in fretting corrosion *** results highlighted the potential SONT in orthopaedic application as bone fracture fixation devices.

关键词： Bone implant interface Bone screws biomedical materials TiO2 nanotubes Fretting corrosion

Biomanufacturing in Japan:frontier research from 2018 to 2023

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Bio-Design and Manufacturing 2023年第6期6卷 617-645页

作者： Qing Cao Yangqianhui Zhang Runyi Deng Kai Ren Huayong Yang Dong Han State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang UniversityHangzhou 310058China School of Mechanical Engineering Zhejiang UniversityHangzhou 310058China

Biomanufacturing(BM)is a multidisciplinary area incorporating the characteristics of living organisms and engineering principles to create valuable products for various sectors,including medicine,energy,and the *** has undergone a remarkable transformation in the last two decades,entering the era of BM4.0 and becoming a pivotal driver of the sustainable ***,Japan has made significant advances in BM,contributing to its development through the creation of innovative materials,advanced processes,and interdisciplinary ***,because of certain development policies,this research has not been widely recognized on an international *** paper provides a comprehensive summary of the research progress made by renowned Japanese laboratories and researchers in biomedical materials,bio-three-dimensional(3D)printing,and biomedical applications in the last five *** unique contributions are introduced and analyzed,illuminating the distinctive approaches and breakthroughs within each ***,this review highlights the current challenges and prospects of *** viewpoints presented in this paper are intended to serve as a valuable reference for scholars studying BM in Japan.

关键词： Biomanufacturing(BM) Japan biomedical materials Bio-3D printing biomedical applications

Influences of Reaction Parameters and Ce Contents on Structure and Properties of Nano-scale Ce-HA Powders

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Journal of materials Science & Technology 2014年第8期30卷 776-781页

作者： L.J.Sun D.G.Guo W.A.Zhao L.Y.Wang K.W.Xu State Key Laboratory for Mechanical Behavior of materials School of Materials Science and EngineeringXi'an Jiaotong University Chao Family Comprehensive Cancer Center Department of Pharmaceutical SciencesUniversity of California Irvine Sue and Bill Gross Stem Cell Research Center University of California Irvine The Key Laboratory of Bioactive materials Ministry of EducationCollege of Life SciencesNankai University Xi'an University of Arts and Science

Ce-incorporated apatite（Ce-HA） nano-scale particles with different Ce percentage contents（atomic ratio of Ce to Ce ＋ Ca is 5%,10%and 20%,respectively） were synthesized via a simple wet chemical method in this *** crystal structure,chemical groups,thermal stability,crystal morphologies and crystal sizes of the Ce-HA nano-particles were characterized by X-ray diffraction（XRD）,Fourier transform infrared spectroscopy（FTIR）,and transmission electron microscopy（TEM）.The influences of reaction temperature,reaction time,pH value,and the atomic ratio of Ce to Ce ＋ Ca on the structure and performance of Ce-HA particles were *** results show that the lattice constants,particle sizes,crystallinity and thermal stability of Ce-HA vary with the doped Ce *** the increase of Ce content,the lattice constants of the Ce-HA nano-particles remarkably increase but the particle size,crystallinity and thermal stability gradually *** reaction temperature as well as the reaction time has no significant effect on the properties of the final products,while the pH value has a direct relationship with their final chemical *** obtained Ce-HA nanosize particles possess potential application in preparing artificial bone implants,bone tissue engineering scaffold and other bioactive coatings.

关键词： Cerium Apatite Nano-scale powder Wet chemical approach biomedical materials

Direct extrusion of thin Mg wires for biomedical applications

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Transactions of Nonferrous Metals Society of China 2020年第2期30卷 373-381页

作者： K.TESAŘ K.BALÍK Z.SUCHARDA A.JÄGER department of materials faculty of nuclear sciences and physical engineeringczech technical university in praguetrojanova 13prague12000czech republic department of dielectrics institute of physicsczech academy of sciencesna slovance 2prague18221czech republic department of composites and carbon materials institute of rock structure and mechanicsczech academy of sciencesv holešovičkách 41prague18209czech republic department of mechanics faculty of civil engineeringczech technical university in praguethákurova 7prague16629czech republic

Biodegradable wires,able to provide load-bearing support for various biomedical applications,are the novel trends in current biomaterial research.A thin 99.92%Mg wire with a diameter of 250μm was prepared via direct extrusion with an extreme reduction ratio of 1:*** total imposed strain in a single processing step was *** was carried out at elevated temperatures in the range from 230 to 310℃and with various ram speeds ranging from^0.2 to^0.5 mm/*** resulting wires show very good mechanical properties which vary with extrusion *** true tensile stress at room temperature reaches^228 MPa and ductility reaches^13%.The proposed single-step direct extrusion can be an effective method for the production of Mg wires in sufficient quantities for *** fractographic analysis revealed that failure of the wires may be closely connected with inclusions(e.g.,Mg O particles).The results are essential for determining the optimal processing conditions of hot extrusion for thin Mg *** smaller grain size,as the outcome of the lower extrusion temperature,is identified as the main parameter affecting the tensile properties of the wires.

关键词： biomedical materials mechanical properties fracture nonferrous metals magnesium

TWIP-assisted Zr alloys for medical applications:Design strategy,mechanical properties and first biocompatibility assessment

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Journal of materials Science & Technology 2024年第17期184卷 32-42页

作者： Junhui Tang Hongtao Yang Bingnan Qian Yufeng Zheng Philippe Vermaut Frédéric Prima Fan Sun Chimie ParisTech CNRS-UMR8247Institut de Recherche de Chimie ParisPSL Research UniversityParis 75005France School of materials Science and Engineering Peking UniversityBeijing 100871China School of Engineering Medicine Beihang UniversityBeijing 100191China Department of Mechanical and Energy Engineering Southern University of Science and TechnologyShenzhen 518055China Sorbonne University UPMC University ParisUFR926Paris 75005France

This study proposes a novel strategy for the design of a new family of metastable Zr *** al-loys offer improved mechanical properties for implants,particularly in applications where conventional stainless steels and Co-Cr alloys are currently used but lack *** design approach is based on the controlled twinning-induced plasticity(TWIP)effect,significantly enhancing the ductility and strain-hardenability of the Zr *** order to draw a“blueprint”for the compositional design of biomedical T WIP(Bio-T WIP)Zr alloys-using only non-toxic elements,the study combines D-electron phase stability calculations(specifically bond order(Bo)and mean d-orbital energy(Md))with a systematic experimental screening of active deformation mechanisms within the Zr-Nb-Sn alloy *** research aids in ac-curately identifying the TWIP line,which signifies the mechanism shift between TWIP and classic slip as the primary deformation *** demonstrate the efficacy of the TWIP mechanism in enhancing mechanical properties,Zr-12Nb-2Sn,Zr-13Nb-1Sn,and Zr-14Nb-3Sn alloys are *** indicate that the TWIP mechanism leads to a significant improvement of strain-hardening rate and a uniform elongation of∼20%in Zr-12Nb-2Sn,which displays both{332}mechanical twinning and disloca-tion slip as the primary deformation ***,Zr-14Nb-3Sn exhibits the typical mechan-ical properties found in stable body-centered cubic(BCC)alloys,characterized by the sole occurrence of dislocation *** viability tests confirm the superior biocompatibility of Zr-Nb-based alloys with deformation twins on the surface,in line with existing *** on the whole set of results,a comprehensive design diagram is proposed.

关键词： Zr alloys Strain-hardening Twinning-induced plasticity(TWIP) Bo-Md diagram Biocompatibility biomedical materials

As-cast microstructure and properties of non-equal atomic ratio TiZrTaNbSn high-entropy alloys

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China Foundry 2022年第6期19卷 481-488页

作者： Teng-fei Ma Qiao-yu Li Yu-liang Jin Xi Zhao Xiao-hong Wang Duo Dong Dong-dong Zhu Key Laboratory of Air-driven Equipment Technology of Zhejiang Province Quzhou UniversityQuzhou 324000ZhejiangChina Northwest Institute for Nonferrous Metal Research Xi'an 710016China

High-entropy alloys have been proved to be potential candidate materials in the biomedical field due to their balanced mechanical properties and excellent *** effects of atomic ratios on the as-cast microstructural evolution,mechanical properties,and electrochemical property of TiZrTaNbSn high-entropy alloys were studied *** crystal structure of TiZrTaNbSn high-entropy alloys is single BCC phase,and the microstructural evolution is based on atomic *** dendric structure,peritectic structure,pseudo eutectic and equiaxed grain,which are associated with element segregation,can be obtained by non-equal atomic ***_(30)Zr_(20)Ta_(20)Nb_(20)Sn_(10)alloy demonstrates a high compressive strength and fracture strain,which are 2,571.8 MPa and 12%,respectively,and the fracture behavior is quasicleavage *** Ti_(45)Zr_(35)Ta_(5)Nb_(5)Sn_(10),Ti_(30)Zr_(20)Ta_(20)Nb_(20)Sn_(10)and Ti_(35)Zr_(25)Ta_(15)Nb_(15)Sn_(10)alloys show excellent corrosion resistance according to Nyquist diagram,polarization curves and corrosion *** with TiZrTaNbSn alloy,the corrosion rate of Ti_(45)Zr_(35)Ta_(5)Nb_(5)Sn_(10) alloy increases by about 98.9%.It can be concluded that non-equal atomic ratios are effective for microstructure control and performance optimization.

关键词： high-entropy alloy biomedical materials microstructure electrochemical property

Charm of Calixarenes on biomedical Applications

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Charm of Calixarenes on Biomedical Applications