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材料科学技术（英文版）
材料科学技术（英文版）

胡壮麟

月刊

1005-0302

jmst@imr.ac.cn

024-83978208

110016

沈阳市沈河区文化路72号

材料科学技术（英文版）/Journal Journal of Materials Science & TechnologyCSCDCSTPCD北大核心EISCI
查看更多>>本刊简称《JMST》，（ISSN 1005-0302，CN 21-1315/TG）。1985年创刊。是中国科协主管，中国金属学会，中国材料研究学会和中国科学院金属研究所联合主办的国际性英文期刊，以“加强国际交流，扩大学术影响，服务经济建设”为办刊宗旨，刊登世界各国的具有创新性和较高学术水平的原始性论文，并设有物约综述、快报、简讯及国内外材料界杰出学者简介等栏目，内容包括金属材料、无机非金属材料、复合材料及有机高分子材料等。
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    Insight into the formation mechanism and interaction of matrix/TiB whisker textures and their synergistic effect on property anisotropy in titanium matrix composites

    Jianwen LeYuanfei HanPeikun QiuShaopeng Li...
    1-13页
    查看更多>>摘要：Considerable studies on processed pure titanium and titanium alloys have proved the possibility of prop-erty anisotropy induced by crystallographic textures,but limited information is available for the intrinsic coupling of matrix and reinforcement textures and their synergistic effect on property anisotropy in tita-nium matrix composite(TMCs).In the present work,an advanced EBSD/EDS coupling method was used to investigate the formation mechanism of primary α and secondary α textures in the matrix alloy.It is revealed for the first time that the reinforcement TiBw displays a{100}<010>texture after hot rolling and has little effect on the matrix texture component but weakens texture intensity.Significant anisotropies in the tensile strength and ductility can be all noted at room and high-temperatures,which is the syn-ergistic effect of the matrix texture and the aligned TiBw.The mean Schmid factor of each slip system was calculated to evaluate the influence of matrix texture on the minimum active stress of slip deforma-tion in the different tensile directions.The analysis shows that the strong T-type matrix texture results in higher strength but lower ductility when loaded in the transverse direction.Moreover,a generalized shear-lag model was modified to quantitatively evaluate the strengthening contribution of aligned TiBw,which decreases with increasing off-axis angle and test temperature.A new parameter,defined as the critical aspect ratio of the off-axis whisker,was proposed to rationalize why the TiBw failure mechanism converts from TiBw fracture to TiBw/matrix interfacial debonding with increasing off-axis angle and test temperature.
      原文链接:
    • 维普
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    Dual-functional bacterial cellulose modified with phase-transitioned proteins and gold nanorods combining antifouling and photothermal bactericidal properties

    Luohuizi LiGuize LiYong WuYuancheng Lin...
    14-23页
    查看更多>>摘要：Bacterial cellulose(BC)is one of the most versatile natural biopolymers with unique physical,chemical,and biological features.However,the lack of intrinsic antibacterial property of native BC limits its broad biomedical applications where such property is highly required to prevent contamination or infection caused by attached bacteria.In this work,we developed a simple and facile method to fabricate a dual-functional BC membrane by physical incorporation of gold nanorods(GNRs)followed by deposition of a phase-transitioned bovine serum albumin(PTB)film.Due to the broad-spectrum antifouling property of the PTB film,the resulting membrane could prevent the adhesion and accumulation of bacteria.A few bacteria that broke through the protection of the PTB film could be eradicated under short-term irradia-tion of a near-infrared laser due to the excellent photothermal property of incorporated GNRs.The whole fabrication was conducted in a simple and environmentally friendly manner,avoiding complicated pro-cesses and toxic organic solvents.Moreover,because all the components were biocompatible,the result-ing membrane showed negligible cytotoxicity in vitro and good histocompatibility in vivo.This work thus provided a reliable way to endow BC with antibacterial property,being beneficial for diverse biomedical applications.
      原文链接:
    • 维普
    • 万方数据

    Highly oxidation-resistant Ti-Mo alloy with two-scale network Ti5Si3 reinforcement

    Qiong LuYaozha LvChi ZhangHongbo Zhang...
    24-34页
    查看更多>>摘要：There is keen interest in using Ti alloys as lightweight structural materials for aerospace and automo-tive industries.However,a long-standing problem for these materials is their poor oxidation resistance.Herein,we designed and fabricated a Ti5Si3 reinforced Ti-4(wt.％)Mo composite with two-scale network architecture by low energy milling and spark plasma sintering.It displays superior oxidation resistance at 800℃owing to the in-situ formation of a multi-component surface layer.This oxide layer has a dense grain size gradient structure that consists of an outer TiO2 layer and an inner SiO2-padding-TiO2 layer,which has remarkable oxidation resistance and thermal stability.Furthermore,it was revealed that the hitherto unknown interaction between Ti5Si3 reinforcement and nitrogen during oxidation would con-tribute to the formation of a TiN nano-twin interface layer,which accommodates the thermal mismatch strain between the oxide layer and matrix.This,along with high adhesion,confers excellent thermal cy-cling life with no cracking or spallation during long-term oxidation.In this regard,the secure operating temperature of this new composite can be increased to 800℃,which provides a design pathway for a new family of Ti matrix composites for high-temperature applications.
      原文链接:
    • 万方数据

    Facile fabrication of highly durable superhydrophobic strain sensors for subtle human motion detection

    Li-Chuan JiaChang-Ge ZhouKun DaiDing-Xiang Yan...
    35-42页
    查看更多>>摘要：Endowing strain sensors with superhydrophobicity is of great importance to guarantee their long-term service under harsh environments(such as wet,acid,alkali and salt atmospheres),whereas,the develop-ment of superhydrophobic strain sensors remains a great challenge.Herein,we realized a superhydropho-bic and highly sensitive sensor for subtle human motion detection by designing a superhydrophobic and electrically conductive coating on cotton textile,via a facile drop-coating method.The resultant strain sensor showed a large water contact angle of 161.3° and a low sliding angle of 3.8° The superhydrophobic characteristics can keep almost unchanged even after undergoing 1000 peeling cycles,1000 stretching-release cycles,and 1000 bending-releasing cycles,revealing its excellent mechanical robustness.High sen-sitivity with the maximum gage factor of 169 was achieved for the strain sensor under a small strain of 0-10％,and the sensing performance also showed well durability.Moreover,our sensor can effectively detect various subtle human physiological signals and body motions even under harsh conditions.These admirable features make the sensor promising applications in wearable electronics,personalized health monitoring,sound recognition,and so on.
      原文链接:
    • 维普
    • 万方数据

    Laser surface treatment-introduced gradient nanostructured TiZrHfTaNb refractory high-entropy alloy with significantly enhanced wear resistance

    Jiasi LuoWanting SunRanxi DuanWenqing Yang...
    43-56页
    查看更多>>摘要：Heterogeneous gradient nanostructured metals have been shown to achieve the strength-ductility syn-ergy,thus potentially possessing the enhanced tribological performance in comparison with their homo-geneous nanograined counterparts.In this work,a facile laser surface remelting-based surface treatment technique is developed to fabricate a gradient nanostructured layer on a TiZrHfTaNb refractory high-entropy alloy.The characterization of the microstructural evolution along the depth direction from the matrix to the topmost surface layer shows that the average grain size in the～100 μm-thick gradient nanostructured layer is dramatically refined from the original～200 μm to only～8 nm in the top sur-face layer.The microhardness is therefore gradually increased from～240 HV in matrix to～650 HV in the topmost surface layer,approximately 2.7 times.Noticeably,the original coarse-grained single-phase body-centered-cubic TiZrHfTaNb refractory high-entropy alloy is gradually decomposed into TiNb-rich body-centered-cubic phase,TaNb-rich body-centered-cubic phase,ZrHf-rich hexagonal-close-packed phase and TiZrHf-rich face-centered-cubic phase with gradient distribution in grain size along the depth direction during the gradient refinement process.As a result,the novel laser surface treatment-introduced gra-dient nanostructured TiZrHfTaNb refractory high-entropy alloy demonstrates the significantly improved wear resistance,with the wear rate reducing markedly by an order of magnitude,as compared with the as-cast one.The decomposed multi-phases and gradient nanostructures should account for the enhanced wear resistance.Our findings provide new insights into the refinement mechanisms of the laser-treated refractory high-entropy alloys and broaden their potential applications via heterogeneous gradient nanos-tructure engineering.
      原文链接:
    • 维普
    • 万方数据

    Grain growth kinetics and densification mechanism of(TiZrHfVNbTa)C high-entropy ceramic under pressureless sintering

    Wen ZhangLei ChenChenguang XuXuming Lv...
    57-64页
    查看更多>>摘要：The grain growth kinetics and densification mechanism of(TiZrHfVNbTa)C high-entropy carbide ceramic are investigated in this work.A single phase carbide with a rock-salt structure is formed until 2300℃,below which an apparent aggregation of V,Zr and Hf exists.It is associated with the slow diffusion rate of V element as well as the relatively poor solubility of VC in HfC(as well as ZrC).The grain growth mechanism gradually changes from surface diffusion to volume diffusion and then grain boundary dif-fusion with increasing sintering temperature.This is attributed to the variation of activation energy of grain growth.The densification mechanism is principally dominated by the mass transport through lat-tice diffusion with the activation energy of 839±53 kJ/mol.Through the design of two-step sintering,it is verified that the solid solution formation can effectively promote the densification process.
      原文链接:
    • 维普
    • 万方数据

    Large-area flexible and transparent UV photodetector based on cross-linked Ag NW@ZnO NRs with high performance

    Lin ZhangNuomei LiQiuchen MaJiahui Ding...
    65-72页
    查看更多>>摘要：A series of large-area,flexible and transparent ultraviolet(UV)photodetectors(PDs)based on Ag nanowire(NW)@ZnO nanorods(NRs)are fabricated by an inexpensive,facile and effective approach.These Ag NW@ZnO NRs are successfully synthesized using a two-step method in an oil bath with a high surface-to-volume ratio and good crystallinity.The PDs are fabricated by drop-coating with differ-ent drop-coating times on the surface of polyethylene terephthalate(PET)coupled with Au electrodes.By optimizing the cross-linked network of Ag NW@ZnO NRs,PD2 with a size greater than 25 mm exhibits excellent photoresponse under UV light illumination of 365 nm(1.3 mW cm-2)with a bias of 5 V:a high sensitivity of over 103,and a much shorter rise/decay time of 2.6 s/2.3 s.Simultaneously,the detector exhibits an average transmittance of more than 70％in the visible light region,as well as good flexibil-ity and excellent mechanical stability under a bending angle of 120° over 1000 circles bending.These integral advantages have significant potential for practical applications and mass production.
      原文链接:
    • 维普
    • 万方数据

    Robust Fe2+-doped nickel-iron layered double hydroxide electrode for electrocatalytic reduction of hexavalent chromium by pulsed potential method

    Zhifei WangJinbo XueYong LiQianqian Shen...
    73-83页
    查看更多>>摘要：Electrocatalytic reduction of Cr(Ⅵ)to less toxic Cr(Ⅲ)is deemed as a promising technique.Conventional electrocatalytic reduction is always driven by a constant cathodic potential,which exhibits a repelling action to Cr(Ⅵ)oxyanions in wastewater and consequently suppresses reduction kinetics.In order to remarkably accelerate Cr(Ⅵ)electrocatalytic reduction,we applied a pulsed potential on an Fe2+-NiFe LDH/NF electrode synthesized by in situ growth of Fe2+-doped NiFe LDH nanosheets on Ni foam using a spontaneous redox reaction.Under anodic potential section,HCrO4-anions are adsorbed on the electrode surface and reduced to Cr(Ⅲ)by Fe2+.Then,Cr(Ⅲ)ions are desorbed from the electrode surface under coulombic force.The regeneration of Fe2+and direct reduction of Cr(Ⅵ)are achieved under cathodic potential section.The pulsed potential can achieve complete elimination of Cr(Ⅵ)within 60 min at an initial concentration of 10 mg L-1,and the removal efficiency shows a 60％increase with respect to that under constant cathodic potential.
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    Highly ductile hypereutectic Al-Si alloys fabricated by selective laser melting

    Yafeng YangKang GengShaofu LiMichael Bermingham...
    84-95页
    查看更多>>摘要：In the endeavor to maximize the refinement effect of primary Si and alleviate the inherent brittleness of hypereutectic Al-Si alloy,the approach of coating P as a modifier on powder was adopted.The ulti-mate aim was to create more heterogeneous fine AlP nucleus and enhance the nucleation efficiency of primary Si on AlP to refine the coarse primary Si to nano-scale during 3D printing.In the combination of large undercooling and high density of nucleation sites,the size of primary Si was successfully refined to 200-300 nm and the divorced eutectic was also induced to modify the microstructure of matrix.In the presence of nano-scale primary Si,the melting pool boundary(MPB)feature disappeared and the fracture mechanism also changed from load transfer to interfacial fracture.Compared with the pristine alloy,the ductility was increased four times without significantly changing the ultimate tensile strength(UTS)and wear resistance.The improvement of ductility is attributed to the refinement of primary Si,the disappearance of MPB features and the formation of divorced eutectic.The optimal tensile properties were:UTS-482 MPa,yield strength-320 MPa and ductility of 8.1％at 0.05 wt.％P.These are comparable to those for high-strength Al alloys.
      原文链接:
    • 维普
    • 万方数据

    Catalytic reduction of carbon dioxide over two-dimensional boron monolayer

    Chuangwei LiuTianyi WangDerek HaoQinye Li...
    96-102页
    查看更多>>摘要：Carbon dioxide reduction(CRR)is an attractive strategy for alleviating global warming and produc-ing valuable fuels.In this work,we study the catalytic conversion of CO2 to C1-C3 products on boron nanosheet in the presence of compressive strain by using density functional theory.Thermodynamic and microkinetic models are applied to demonstrate the favorable products,critical steps,and hydrogenation mechanisms.As demonstrated,the strain can turn metallic two-dimensional boron nanosheet to semicon-ductor,not only making boron sheets possess photo(electro)catalytic activity,but also improving energy efficiency and selectivity performance against hydrogen evolution reaction.By introducing the aqueous electrolytes,the hydrated alkali cations not only effect on the CO2 concentration,but also produce a big-ger surface charge density and stronger interfacial electric filed.Especially,the selectivity of C2+products is enhanced with the increase of alkali cations size by decreasing the kinetic barrier for CO dimerization and stabilizing the intermediates.The results highlight the significance of metal-free catalysts for CRR by the photoelectrochemical method and provide novel avenues for the development of new solar-energy utilization catalysts.
      原文链接:
    • 维普
    • 万方数据