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Rare Metals 2009年第2期28卷 169-174页

作者： Liu, Zheng lin, jixing Jing, Qingxiu Faculty of Material and Chemical Engineering Jiangxi University of Science and Technology Ganzhou 341000 China

The effects of mixed rare earth oxides and CaCO3 on the microstructure of an in-situ Mg2Si/Al-Si hypereutectic alloy composite were investigated by optical microscope,scanning electron microscope,and energy dispersive spectrum analysis. The results showed that the morphol-ogy of the primary Mg2Si phase particles changed from irregular or crosses to polygonal shape,their sizes decreased from 75 μm to about 25 μm,and the compound of both the oxide and CaCO3 was better than either the single mixed rare earth o...

关键词： hypereutectic alloys Al-Si alloys composite rare earth oxides modification

Improvements in mechanical, corrosion, and biocompatibility properties of Mg–Zr–Sr–Dy alloys via extrusion for biodegradable implant applications

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Journal of Magnesium and Alloys 2023年第10期11卷 3840-3865页

作者： Faisal Kiani jixing lin Khurram Munir Cuie Wen Yuncang Li School of Engineering RMIT UniversityMelbourneVictoria 3001Australia School and Hospital of Stomatology Wenzhou Medical UniversityWenzhou 325027China

In this study,extrusion was performed on Mg-Zr-Sr-Dy alloys for improving their mechanical,corrosion,and biocompatibility *** of extrusion and alloying elements on the microstructural characteristics,tensile and compressive strengths,corrosion behavior,and biocompatibility were *** Mg-Zr-Sr-Dy alloys were composed of an α-Mg matrix containing {10■2} extension twins and secondary phases of intermetallic compounds Mg_(17)Sr_(2) and Mg_(2)*** of basal and rare earth(RE) textures was observed in the extruded alloys and an increase in Dy content to 2 wt.% resulted in texture randomization and strengthening of the RE component,mainly due to particle-stimulated nucleation and a change from discontinuous dynamic recrystallization to continuous dynamic recrystallization,which also led to an improved tension-compression yield asymmetry of *** of the alloys significantly enhanced their tensile and compressive properties due to improved distribution of alloying elements and formation of *** rates tested by hydrogen evolution testing,potentiodynamic polarization,and electrical impedance spectroscopy showed similar trends for each composition,and the lowest corrosion rate of 3.37 mmy^(-1) was observed for the Mg-1Zr-0.5Sr-1Dy in the potentiodynamic polarization ***_(2)O_(3) was observed in the inner layers of the Mg(OH)_(2) protective films,whose protective efficacy was confirmed by charge-transfer and film resistances.A comparison among the minimum CRs observed in this study and previously studied as-cast Mg-Zr-Sr-Dy and extruded Mg-Zr-Sr alloys,demonstrates that both the extrusion process and addition of Dy in Mg-Zr-Sr improved the ***,extruded Mg-Zr-Sr-Dy alloys showed improved cell viability and adhesion of human osteoblast-like SaOS2 cells due to increased corrosion resistance and enhanced Sr distribution within the Mg matrix.

关键词： Corrosion Microstructure mechanical properties Cytotoxicity Mg–Zr–Sr–Dy alloy

Development of Ti-26Nb-1.2TiC shape memory composite for biomedical applications

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Journal of Materials Science & Technology 2023年第22期153卷 128-138页

作者： Quanxiang Sun Dechuang Zhang Xian Tong Jianguo lin jixing lin Yuncang Li Cuie Wen School of Materials Science and Engineering Xiangtan UniversityXiangtan 411105China Key Laboratory of Low Dimensional Materials&Application Technology Xiangtan UniversityMinistry of EducationHunan 411105China Institute of Stomatology School and Hospital of StomatologyWenzhou Medical UniversityWenzhou 325027China School of Engineering RMIT UniversityMelbourneVictoria 3001Australia

Ti-Nb alloys have great potential in biomedical applications as bone-implant materials due to their low elastic modulus,superelasticity,high corrosion resistance,and good ***,the low yield strength and poor superelasticity of Ti-Nb alloys restrict their practical clinical ***,we report the mechanical properties and superelasticity,corrosion behavior,and biocompatibility of a Ti-26 at.%Nb-1.2 vol.%TiC(Ti-26Nb-1.2TiC)shape memory composite(SMC)prepared by vacuum arc melting and hot *** yield strength,critical stress for inducing martensitic transformation,and elongation of the Ti-26Nb-1.2TiC SMC and a Ti-26Nb alloy were 460 and 337 MPa,251 and 115 MPa,and 27.2%and 24.1%,*** recovery rate of the SMC under 4%pre-strain reached 91.4%,which was 1.2 times that of the *** tests in Hanks’solution revealed that the corrosion current density,passive current density,and corrosion rate of the SMC were lower than those of the *** the Ti-26Nb alloy and Ti-26Nb-1.2TiC SMC showed good cell viability with grade 0 cytotoxicity in relation to MG-63 osteosarcoma cells.

关键词： Corrosion resistance Cytotoxicity Mechanical properties Superelasticity Ti-Nb alloy Ti-Nb-TiC shape memory composite

Impact of scandium and terbium on the mechanical properties,corrosion behavior,and biocompatibility of biodegradable Mg-Zn-Zr-Mn alloys

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Journal of Magnesium and Alloys 2024年第2期12卷 546-572页

作者： Khurram Munir jixing lin Xian Tong Arne Biesiekierski Yuncang Li Cuie Wen School of Engineering RMIT UniversityMelbourneVictoria 3001Australia School and Hospital of Stomatology Wenzhou Medical UniversityWenzhou 325027China

Magnesium(Mg)-based bone implants degrade rapidly in the physiological environment of the human body which affects their structural integrity and biocompatibility before adequate bone *** earth elements(REEs)have demonstrated their effectiveness in tailoring the corrosion and mechanical behavior of Mg *** study methodically investigated the impacts of scandium(Sc)and terbium(Tb)in tailoring the corrosion resistance,mechanical properties,and biocompatibility of Mg–0.5Zn–0.35Zr–0.15Mn(MZZM)alloys fabricated via casting and hot *** indicate that addition of Sc and Tb improved the strength of MZZM alloys via grain size reduction and solid solution strengthening *** extruded MZZM–(1–2)Sc–(1–2)Tb(wt.%)alloys exhibit compressive strengths within the range of 336–405 MPa,surpassing the minimum required strength of 200 MPa for bone implants by a significant *** polarization tests revealed low corrosion rates of as–cast MZZM(0.25 mm/y),MZZM–2Tb(0.45 mm/y),MZZM–1Sc–1Tb(0.18 mm/y),and MZZM–1Sc–2Tb(0.64 mm/y),and extruded MZZM(0.17 mm/y),MZZM–1Sc(0.15 mm/y),MZZM-2Sc(0.45 mm/y),MZZM-1Tb(0.17 mm/y),MZZM-2Tb(0.10 mm/y),MZZM–1Sc-1Tb(0.14 mm/y),MZZM-1Sc-2Tb(0.40 mm/y),and MZZM–2Sc–2Tb(0.51 mm/y)alloys,which were found lower compared to corrosion rate of high-purity Mg(~1.0 mm/y)reported in the ***,addition of Sc,or Tb,or Sc and Tb to MZZM alloys did not adversely affect the viability of SaOS2 cells,but enhanced their initial cell attachment,proliferation,and spreading shown via polygonal shapes and *** study emphasizes the benefits of incorporating Sc and Tb elements in MZZM alloys,as they effectively enhance corrosion resistance,mechanical properties,and biocompatibility simultaneously.

关键词： Corrosion property In vitro cytotoxicity Magnesium alloys Mechanical property Rare earth elements

Microstructures, mechanical properties, corrosion, and biocompatibility of extruded Mg-Zr-Sr-Ho alloys for biodegradable implant applications

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Journal of Magnesium and Alloys 2023年第1期11卷 110-136页

作者： Faisal Kiani jixing lin Alireza Vahid Khurram Munir Cuie Wen Yuncang Li School of Engineering RMIT UniversityMelbourneVictoria 3001Australia School and Hospital of Stomatology Wenzhou Medical UniversityWenzhou 325027China Institute for Frontier Materials Deakin UniversityGeelongVictoria 3217Australia

In this study,the microstructures,mechanical properties,corrosion behaviors,and biocompatibility of extruded magnesium-zirconiumstrontium-holmium(Mg-Zr-Sr-Ho)alloys were comprehensively *** effect of different concentrations of Ho on the microstructural characteristics,tensile and compressive properties,corrosion resistance,and biocompatibility were *** microstructures of the extruded Mg-1Zr-0.5Sr-xHo(x=0.5,1.5,and 4 wt.%)alloys consisted ofα-Mg matrix,fineα-Zr particles,and intermetallic phase particles of Mg_(17)Sr_(2) and Ho_(2)Mg mainly distributed at the grain ***{1012}tensile twins were observed in the partially recrystallized samples of Mg-1Zr-0.5Sr-0.5Ho and *** addition of Ho to 4 wt.%resulted in a complete recrystallization due to activation of the particle stimulated nucleation around the Mg_(17)Sr_(2) *** evolution of a rare earth(RE)texture was observed with the Ho addition,which resulted in the weakened basal and prismatic ***,a drastic increase of 200%in tensile elongation and 89%in compressive strain was observed with Ho addition increased from 0.5 to 4 wt%,*** tension-compression yield asymmetry was significantly decreased from 0.62 for Mg-1Zr-0.5Sr-0.5Ho to 0.98 for Mg-1Zr-0.5Sr-4Ho due to the weakening of *** analysis of the extruded Mg-Zr-Sr-Ho alloys revealed the presence of pitting corrosion.A minimum corrosion rate of 4.98 mm y^(−1) was observed in Mg-1Zr-0.5Sr-0.5Ho *** enhanced corrosion resistance is observed due to the presence of Ho_(2)O_(3) in the surface film which reduced galvanic *** formation of a stabilized surface film due to the Ho_(2)O_(3) was confirmed through the electrical impedance spectroscopy and XPS *** in vitro cytotoxicity assessment revealed good biocompatibility and cell adhesion in relation to SaOS2 cells.

关键词： Mg-Zr-Sr-Ho alloy Mechanical properties Corrosion Cytotoxicity EBSD Electrical impedance spectroscopy Potentiodynamic polarization

Binary Zn–Ti alloys for orthopedic applications:Corrosion and degradation behaviors,friction and wear performance,and cytotoxicity

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Journal of Materials Science & Technology 2021年第15期74卷 216-229页

作者： Kun Wang Xian Tong jixing lin Aiping Wei Yuncang Li Matthew Dargusch Cuie Wen Department of Material Engineering.Zhejiang Industry Trade Vocational College Wenzhou 325003China Key Laboratory of Materials Physics Institute of Solid State PhysicsChinese Academy of Sciences Heifei230031China School of Materials Science and Engineering Xiangtan University.Xiangtan 411105China School of Engineering.RMIT University.Melbourne Victoria 3001Australia Centre for Advanced Materials Processing and Manufacturing(AMPAM) The University of Queensland.Brisbane.Queensland 4072Australia

Zinc(Zn)and its biocompatible and biodegradable alloys have substantial potential for use in orthopedic ***,pure Zn with a hexagonal close-packed crystal structure has only two independent slip systems,therefore exhibiting extremely low elongation and yield strength in its ascast condition,which restricts its clinical *** this study,as-cast Zn–xTi(titanium)(x=0.05,0.10,0.20,and 0.30 wt.%)binary alloys were hot-rolled and their microstructures,mechanical properties,wear resistance,and cytocompatibility were comprehensively investigated for orthopedic implant *** microstructures of both as-cast and hot-rolled Zn–xTi alloys consisted of anα-Zn matrix phase and a TiZn16 phase,while Zn–0.2 Ti and Zn–0.3 Ti exhibited a finerα-Zn phase due to the grainrefining effect of *** hot-rolled Zn–0.2 Ti alloy exhibited the highest yield strength(144.5 MPa),ultimate strength(218.7 MPa),and elongation(54.2%)among all the Zn–x Ti *** corrosion resistance of Zn–xTi alloys in Hanks’solution decreased with increasing addition of Ti,and the hot-rolled Zn–0.3 Ti alloy exhibited the highest corrosion rates of 432μm/y as measured by electrochemical testing and 57.9μm/y as measured by immersion *** as-cast Zn–xTi alloys showed lower wear losses than their hot-rolled *** extracts of hot-rolled Zn–x Ti alloys at concentrations of≤25%showed no cytotoxicity to MG-63 osteosarcoma cells and the extracts of Zn–xTi alloys exhibited enhanced cytocompatibility with increasing Ti content.

关键词： Cytotoxicity Degradation behavior Mechanical property Wear resistance Zn–Ti alloy

Biodegradable Zn–3Cu and Zn–3Cu–0.2Ti alloys with ultrahigh ductility and antibacterial ability for orthopedic applications

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Journal of Materials Science & Technology 2021年第9期68卷 76-90页

作者： jixing lin Xian Tong Kun Wang Zimu Shi Yuncang Li Matthew Dargusch Cuie Wen Department of Material Engineering Zhejiang Industry&Trade Vocational CollegeWenzhou325003China School of Materials Science and Engineering Xiangtan UniversityXiangtan411105China Key Laboratory of Materials Physics Institute of Solid State PhysicsChinese Academy of SciencesHefei230031China School of Engineering RMIT UniversityMelbourneVictoria3001Australia Centre for Advanced Materials Processing and Manufacturing(AMPAM) The University of QueenslandBrisbaneQueensland.4072Australia

Zinc(Zn) and its alloys have been proposed as biodegradable implant materials due to their unique combination of biodegradability, biocompatibility, and biofunctionality. However, the insufficient mechanical properties of pure Zn greatly limit its clinical application. Here, we report on the microstructure, mechanical properties, friction and wear behavior, corrosion and degradation properties, hemocompatibility, and cytocompatibility of Zn–3 Cu and Zn–3 Cu–0.2 Ti alloys under three different conditions of as-cast(AC),hot-rolling(HR), and hot-rolling plus cold-rolling(HR + CR). The HR + CR Zn–3 Cu–0.2 Ti exhibited the best set of comprehensive properties among all the alloy samples, with yield strength of 211.0 MPa, ultimate strength of 271.1 MPa, and elongation of 72.1 %. Immersion tests of the Zn–3 Cu and Zn–3 Cu–0.2 Ti alloys in Hanks’ solution for 3 months indicated that the AC samples showed the lowest degradation rate,followed by the HR samples, and then the HR + CR samples, while the HR + CR Zn–3 Cu exhibited the highest degradation rate of 23.9 m/a. Friction and wear testing of the Zn–3 Cu and Zn–3 Cu–0.2 Ti alloys in Hanks’ solution indicated that the AC samples showed the highest wear resistance, followed by the HR samples, and then the HR + CR samples, while the AC Zn–3 Cu–0.2 Ti showed the highest wear *** diluted extracts of HR + CR Zn–3 Cu and Zn–3 Cu–0.2 Ti at a concentration of ≤25 % exhibited noncytotoxicity. Furthermore, both the HR + CR Zn–3 Cu and Zn–3 Cu–0.2 Ti exhibited effective antibacterial properties against S. aureus.

关键词： Cytotoxicity Degradation behavior Mechanical properties Zn-Cu biodegradable metals

Effect of thermomechanical treatment on the mechanical and microstructural evolution of a β-type Ti-40.7Zr–24.8Nb alloy

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Bioactive Materials 2019年第1期4卷 303-311页

作者： Sertan Ozan jixing lin Weijie Weng Yaowu Zhang Yuncang Li Cuie Wen School of Engineering RMIT UniversityBundooraVictoria3083Australia Department of Mechanical Engineering Yozgat Bozok University66100YozgatTurkey Advanced Material Research and Development Center Zhejiang Industry&Trade Vocational CollegeWenzhouZhejiang325003China

In this study,the microstructural evolution and mechanical properties of a newly developed Ti-40.7Zr-24.8Nb(TZN)alloy after different thermomechanical processes were ***-cast TZN alloy plates were solutiontreated at 890℃ for 1 h,after which the thickness of the alloy plates was reduced by cold rolling at reduction ratios of 20%,56%,76%,and 86%.Stress-induced α”formation,{332}β mechanical twinning,and kink band formation were observed in the cold-rolled TZN alloy *** the TZN sample after cold rolling at the 86%reduction ratio plus a recrystallization annealing at 890℃ for 1 h,the deformation products of a stressinducedα”phase,{332}β mechanical twinning,and kink bands disappeared,resulting in a fine,equiaxed singleβ *** alloy samples exhibited elongation at rupture ranging from 7%to 20%,Young's modulus ranging from 63 to 72 GPa and tensile strength ranging from 753 to 1158 *** TZN alloy sample after cold rolling and recrystallization annealing showed a yield strength of 803 MPa,a tensile strength of 848 MPa,an elongation at rupture of 20%,and an elastic admissible strain of 1.22%,along with the most ductile fractures during tensile testing.

关键词： TZN(Ti-Nb-Zr)alloy Orthopedic implants Thermomechanical process Deformation mechanism Mechanical properties

Titanium-niobium pentoxide composites for biomedical applications

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Bioactive Materials 2016年第2期1卷 127-131页

作者： Yuncang Li Khurram S.Munir jixing lin Cuie Wen School of Engineering RMIT UniversityMelbourneVictoria 3001Australia Department of Materials Science and Engineering Jilin UniversityChangchunJilin 130025China Advanced Material Research and Development Center Zhejiang Industry&Trade Vocational CollegeWenzhouZhejiang 325003China

The strength of titanium scaffolds with the introduction of high porosity decreases dramatically and may become inadequate for load bearing in biomedical *** simultaneously meet the requirements of biocompatibility,low elastic modulus and appropriate strength for orthopedic implant materials,it is highly desirable to develop new biocompatible titanium based materials with enhanced *** this study,we developed a niobium pentoxide(Nb2O5)reinforced titanium composite via powder metallurgy for biomedical *** strength of the Nb2O5 reinforced titanium composites(Ti-Nb2O5)is significantly higher than that of pure *** culture results revealed that the Ti-Nb2O5 composite exhibits excellent biocompatibility and cell *** osteoblast-like cells grew and spread healthily on the surface of the Ti-Nb2O5 *** study demonstrated that Nb2O5 reinforced titanium composite is a promising implant material by virtue of its high mechanical strength and excellent biocompatibility.

关键词： Titanium-niobium pentoxide composite Particulate-reinforcement Orthopedic implant Mechanical property Biocompatibility

Al-Ti共掺杂MoS2复合涂层润滑性能研究

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真空科学与技术学报 2019年第10期39卷 901-906页

作者：赵岚曹明林继兴浙江工贸职业技术学院材料工程系温州325003 吉林大学材料科学与工程学院长春130022

采用磁控射频(RF)与磁控直流(DC)分别溅射金属铝靶,制备了润滑RF-Al-Ti/MoS2和DC-Al-Ti/MoS2复合涂层,并在真空条件下对制备涂层进行热处理以提高涂层耐磨损性能。结果表明,RF-Al-Ti/MoS2复合涂层中S/Mo原子比为1.55,有利于MoS2(002)面... 详细信息

采用磁控射频(RF)与磁控直流(DC)分别溅射金属铝靶,制备了润滑RF-Al-Ti/MoS2和DC-Al-Ti/MoS2复合涂层,并在真空条件下对制备涂层进行热处理以提高涂层耐磨损性能。结果表明,RF-Al-Ti/MoS2复合涂层中S/Mo原子比为1.55,有利于MoS2(002)面的形成,涂层平均摩擦系数低至0.1;由于RF-Al-Ti/MoS2复合涂层原子沉积效率更大,导致涂层结构致密,且RF-Al-Ti/MoS2复合涂层中Al原子含量高,有利于提升涂层抗氧化能力及耐磨损性能。对RF-Al-Ti/MoS2和DC-Al-Ti/MoS2复合涂层进行真空热处理,Ti和Al间扩散形成Ti-Al中间相进一步提升了涂层抗氧化性能,DC-Al-Ti/MoS2复合涂层磨痕形貌显示其耐磨损能力得到了明显提升;经500℃处理后,RF-Al-Ti/MoS2和DC-Al-Ti/MoS2复合涂层平均摩擦系数分别降低至0.08和0.07。总体上,射频溅射更有利于提升Al-Ti/MoS2复合涂层摩擦学性能。

关键词：磁控溅射 Al-Ti/MoS2复合涂层摩擦学性能真空热处理