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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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    Patterned growth of β-Ga2O3 thin films for solar-blind deep-ultraviolet photodetectors array and optical imaging application

    Chao XieXingtong LuYi LiangHuahan Chen...
    189-196页
    查看更多>>摘要：Solar-blind deep-ultraviolet (DUV) photodetectors based on Ga2O3 have attracted great attention due to their potential applications for many military and civil purposes.However,the development of device integration for optoelectronic system applications remains a huge challenge.Herein,we report a facile method for patterned-growth of high-quality β-Ga2O3 thin films,which are assembled into a photodetectors array comprising 8 × 8 device units.A representative detector exhibits outstanding photoresponse performance,in terms of an ultra-low dark current of～0.62 pA,a large Ilight/Idark ratio exceeding 104,a high responsivity of ～0.72 A W-1 and a decent specific detectivity of ～4.18 × 1011 Jones,upon 265 nm DUV illumination.What is more,the DUV/visible (250/400 nm) rejection ratio is as high as 103 with a sharp response cut-offwavelength at ～280 nm.Further optoelectronic analysis reveals that the photodetectors array has good uniformity and repeatability,endowing it the capability to serve as a reliable DUV light image sensor with a decent spatial resolution.These results suggest that the proposed technique offers an effective avenue for patterned growth of β-Ga2O3 thin films for multifunctional DUV optoelectronic applications.
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    Diffusion-induced abnormal tertiary dendrite during peritectic solidification in a temperature gradient

    Peng PengAnqiao ZhangJinmian YueXudong Zhang...
    197-201页
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    Anti-corrosive mechanism of poly (N-ethylaniline)/sodium silicate electrochemical composites for copper: Correlated experimental and in-silico studies

    Hao LiuBaomin FanGuifeng FanYucong Ma...
    202-216页
    查看更多>>摘要：Poly (N-ethylaniline) (PNEA) composites with varying silicate content were fabricated on copper through a novel electropolymerized strategy in acidic solution.Thickness,compactness,conductivity and adhesive strength of the composite (PNEA-10Si) were optimized as silicate content reached 10 mM.Electrochemical,morphological and solution analyses were employed to evaluate the protective performance of PNEA and PNEA-10Si coatings for copper in 3.5 ％ NaCl solution.Results of electrochemical analyses indicated that as-prepared coatings retarded the oxygen reduction process efficiently for copper in 3.5 ％ NaCl solution,drained corrosion current density and elevated interfacial charge transfer resistance.Due to favorable barrier effect,compact structure and low porosity index,PNEA-10Si composite exhibited superior anti-corrosive performance,which was more tolerant than PNEA during long-time immersion.PNEA-10Si coated sample exhibited a stable topography after 144 h immersion with the minimum concentration of released ions revealing the improved protection capacity.Electronic/atomic-multiscale calculations were conducted to clarify the deposition and protection mechanism of as-prepared coatings.Outcomes of density functional theory corroborated that silicate is stabilized in the PNEA layer via electrostatic force;and immobile silicate positively contributed to the charge transfer barrier of the composite.Molecular dynamics simulations evidenced that the favorable compatibility between PNEA and silicate facilitated polymer deposition and confined in-situ ions diffusion.
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    Additive manufacturing of steel-copper functionally graded material with ultrahigh bonding strength

    Chaolin TanYouxiang ChewGuijun BiDi Wang...
    217-222页
    查看更多>>摘要：Additive manufacturing enables processing of functionally graded materials (FGMs) with flexible spatial design and high bonding strength.A steel-copper FGM with high interfacial strength was developed using laser powder bed fusion (LPBF).The effect of laser process parameters on interfacial defects was evaluated by X-ray tomography,which indicates a low porosity level of 0.042 ％ therein.Gradient/fine dendritic grains in the interface are incited by high cooling rates,which facilitates interface strengthening.Multiple mechanical tests evaluate the bonding reliability of interface;and the fatigue tests further substantiate the ultrahigh bonding strength in FGMs,which is superior to traditional manufacturing methods.Mechanisms of the high interfacial bond strength were also discussed.
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    Structural integrity and damage of ZrB2 ceramics after 4 MeV Au ions irradiation

    Weichao BaoStuart RobertsonJia-Wei ZhaoJi-Xuan Liu...
    223-230页
    查看更多>>摘要：Ultra-high temperature ceramics have been considered as good candidates for plasma facing materials due to their combination of high melting point,high strength and hardness,high thermal conductivity as well as good chemical inertness.In this study,zirconium diboride has been chosen to investigate its irradiation damage behavior.Irradiated by 4 MeV Au2+ with a total fluence of 2.5 × 1016 cm-2,zirconium diboride ceramic shows substantial resilience to irradiation-induced damage with its structural integrity well maintained but mild damage at lattice level.Grazing incident X-ray diffraction evidences no change of the hexagonal structure in the irradiated region but its lattice parameter a increased and c decreased,giving a volume shrinkage of ～0.46％.Density functional theory calculation shows that such lattice shrinkage corresponds to a non-stoichiometric compound as ZrB1.97.Electron energy-loss spectroscopy in a transmission electron microscope revealed an increase of valence electrons in zirconium,suggesting boron vacancies were indeed developed by the irradiation.Along the irradiation depth,long dislocations were observed inside top layer with a depth of～750 nm where the implanted Au ions reached the peak concentration.Underneath the top layer,a high density of Frank dislocations is formed by the cascade collision down to a depth of 1150nm.All the features show the potential of ZrB2 to be used as structural material in nuclear system.
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