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The InSe/g-CN van der Waals hybrid heterojunction as a photocatalyst for water splitting driven by visible light

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Chinese Chemical Letters 2022年第1期33卷 404-409页

作者： Cheng He fusheng han Wenxue Zhang State Key Laboratory for Mechanical Behavior of Materials School of Materials Science and EngineeringXi'an Jiaotong UniversityXi'an 710049China. School of Materials Science and Engineering Chang'an UniversityXi'an 710064China

Designing and developing the highly efficient photocatalysts is full of significance to achieve spontaneous photolysis *** this work,using the first-principles calculations,we have performed a systematic theoretical study of water splitting photocatalytic activity of the InS e/g-CN *** is concluded that the In Se/g-CN heterojunction is a typical type-II semiconductor,whose electrons and holes can be effectively *** the potential of the conduction band minimum(CBM)and valence band maximum(VBM)satisfy the requirements for photolysis ***,the changes of Gibbs free energy(ΔG)of the oxygen evolution reaction(OER)and the hydrogen evolution reaction(HER)are calculated to investigate thermodynamic sustainability of photolysis *** results show that when pH=7,the potential driving force provided by the InSe/g-CN heterojunction can ensure the spontaneous progress of HER and *** addition,it is found that the solar conversion efficiency(η;)of the In Se/g-CN heterojunction is up to 13.7%,which indicates it has broad commercial application ***,the In Se/g-CN heterojunction is expected to be an excellent candidate for photolysis water.

关键词： Photolysis water First-principles Type-Ⅱsemiconductor Solar-to-hydrogen

A novel approach to fabricate Zn coating on Mg foam through a modified thermal evaporation technique

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Journal of Materials Science & Technology 2018年第9期34卷 1558-1563页

作者： Xingfu Wang Xinfu Wang Dan Wang Modi Zhao fusheng han Key Laboratory of Materials Physics Institute of Solid State Physics Chinese Academy of Sciences

Zn enriched coatings with distinct microstructures and properties were fabricated on Mg foams by a modified thermal evaporation technique using a tubular resistance furnace. As the temperature and kinetic energy of Zn vapor varied along the tubular system, a spatial variation of preparation conditions was created and the obtained coatings were found to follow two growth mechanisms： a thermal diffusion pattern in high-temperature zone and the a relatively low-temperature deposition model. AZn-based deposition coating with dense texture and nearly uniform structure was acquired while Mg foam was placed 20 cm far from the evaporation source, where the Zn vapor deposition model dominated the coating *** properties and bio-corrosion behaviors of the samples were investigated. Results showed that the Zn coatings brought dramatic improvements in compression strength, but exhibited differently in biodegradation performance. It was confirmed that the diffusion layer accelerated corrosion of Mg foam due to the galvanic effect, while the Zn-based deposition coating displayed excellent anti-corrosion performance, showing great potential as bone implant materials. This technique provides a novel and convenient approach to tailor the biodegradability of Mg foams for biomedical applications.

关键词： Biomaterials Mg foams Thermal evaporation technique Coatings Biodegradability

Three-Dimensional Hierarchical Structures of ZnO Nanorods as a Structure Adsorbent for Water Treatment

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Journal of Materials Science & Technology 2017年第8期33卷 864-868页

作者： Zhendong Li Yingjie Huang Xingfu Wang Dan Wang Xinfu Wang fusheng han Key Laboratory of Materials Physics Institute of Solid State PhysicsChinese Academy of SciencesHefei 230031China

Three-dimensional（3D） ZnO nanorods with good adsorption property was successfully fabricated via a facile hydrothermal method, and characterized by scanning electron microscopy（SEM）, X-ray diffraction（XRD）, Energy Dispersive X-ray spectrometer（EDX） and a UV-vis spectrophotometer. It was found that the ZnO nanorods with a diameter of 0.5 μm and the length of 10 μm were firmly grown on the struts of the open-cell aluminum foams, and the 3D hierarchical structured adsorbent Zn O nanorods/Al foam（r-ZnO/AF） exhibits a higher adsorption capacity for Brilliant Blue R（BBR） in aqueous solutions, more stable sorption regenerable behavior and solid–liquid separability in contrast to the corresponding n-ZnO powder sample. The kinetics of the adsorption process was also discussed.

关键词： Structured adsorbent Open-cell aluminum foam Zinc oxide Water treatment

Influence of macroscopic graphite particulates on the damping properties of Zn-Al eutectoid alloy

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Science China(Physics,Mechanics & Astronomy) 2009年第1期52卷 70-75页

作者： WEI JianNing SONG ShiHua HU KongGang XIE WeiJun MA MingLiang LI GenMei han fusheng College of Science Jiujiang UniversityJiujiang 332005China Department of Mechanical Engineering Jiujiang UniversityJiujiang 332005China Department of Materials Science and Engineering Jiujiang UniversityJiujiang 332005China Institute of Solid State Physics Chinese Academy of SciencesHefei 230031China

The paper presents in detail the effects of macroscopic graphite (Gr) particulates on the damping behavior of Zn-Al eutectoid alloy (Zn-Al). Macroscopic defects are graphite particulates with sizes of the order of a millimeter (0.5 mm and 1.0 mm). Macroscopic graphite particulate-reinforced Zn-Al eutectoid alloys were prepared by the air pressure infiltration process. The damping characterization was conducted on a multifunction internal friction apparatus (MFIFA). The internal friction (IF), as well as the relative dynamic modulus, was measured at different frequencies over the temperature range of 20 to 400°C. The damping capacity of the Zn-Al/Gr, with two different volume fractions of macroscopic graphite particulates, was compared with that of bulk Zn-Al eutectoid alloy. The damping capacity of the materials is shown to increase with increasing volume fraction of macroscopic graphite particulates. Two IF peaks were found in the IF-temperature curves. The first is a grain boundary peak, which is associated with the diffusive flux on a boundary between like phases, Al/Al. Its activation energy has been calculated to be 1.13±0.03 eV and the pre-exponential factor is 10?14 s in IF measurements. The second is a phase transition peak, which results from the transformation of Zn-Al eutectoid. In light of internal friction measurements and differential scanning calorimetry (DSC) experiments, its activation energy has been calculated to be 2.36±0.08 eV.

关键词： Zn-Al eutectoid alloy damping internal friction graphite particulate

Mechanical Behavior and Microstructure Evolution during Tensile Deformation of Twinning Induced Plasticity Steel Processed by Warm Forgings

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Journal of Wuhan University of Technology(Materials Science) 2024年第2期39卷 417-424页

作者：王文 ZHAO Modi WANG Xingfu 汪聃韩福生 School of Aerospace and Mechanical Engineering Flight College Changzhou Institute of TechnologyChangzhou 213032China Key Laboratory of Materials Physics Institute of Solid State PhysicsChinese Academy of SciencesHefei 230031China School of Physics and Electronic Information Yan’an UniversityYan’an 716000China

The mechanical behavior and microstructural evolution of an Fe-30Mn-3Al-3Si twinninginduced plasticity(TWIP)steel processed using warm forging was *** is found that steel processed via warm forging improves comprehensive mechanical properties compared to the TWIP steel processed via cold rolling,with a high tensile strength(R_(m))of 793 MPa,a yield strength(R_(P))of 682 MPa,an extremely large R_(P)/R_(m)ratio as high as 0.86 as well as an excellent elongation rate of 46.8%.The microstructure observation demonstrates that steel processed by warm forging consists of large and elongated grains together with fine,equiaxed *** micro-defect configurations were also observed within the steel,including dense dislocation networks and a few coarse deformation *** the plastic deformation proceeds,the densities of dislocations and deformation twins significantly ***,a great number of slip lines could be observed in the elongated *** findings reveal that a much more dramatic interaction between microstructural defect and dislocations glide takes place in the forging sample,wherein the fine and equiaxed grains propagated dislocations more rapidly,together with initial defect configurations,are responsible for enhanced strength ***,larger,elongated grains with more prevalently activated deformation twins result in high plasticity.

关键词： TWIP steel twinning mechanical property deformation mechanism microstructure

Fe-Al合金中与Al反位置原子弛豫有关的内耗峰

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金属学报 2007年第3期43卷 311-314页

作者：孙蔚吴杰韩福生浙江工贸职业技术学院温州325003 中国科学院固体物理研究所材料物理重点实验室合肥230031

利用内耗方法对Fe_(47)Al_(53)合金中Al反位置原子的运动特征进行了研究,在410℃附近观察到了一个与合金热历史相关的弛豫型内耗峰．在快冷样品中内耗峰高度明显高于慢冷样品时内耗峰的高度;而对于快冷样品,升温测量时内耗峰高度又明显... 详细信息

利用内耗方法对Fe_(47)Al_(53)合金中Al反位置原子的运动特征进行了研究,在410℃附近观察到了一个与合金热历史相关的弛豫型内耗峰．在快冷样品中内耗峰高度明显高于慢冷样品时内耗峰的高度;而对于快冷样品,升温测量时内耗峰高度又明显高于随后的降温测量时内耗峰的高度,内耗峰高度表明该内耗峰与快冷时残留的缺陷有关．由于该内耗峰激活能为1．88 eV,与Fe_(47)Al_(53)合金中Fe空位的迁移能相当,因而该峰应产生于应力诱导下Al反位置原子在Fe空位之间的运动．

关键词： FeAl(B2)合金内耗 Fe空位 Al反位置原子

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Fe-Al合金有序化过程中的内耗峰

金属学报 2009年第4期45卷 396-399页

作者：吴杰崔洪芝迟静姚树玉韩福生山东科技大学材料科学与工程学院青岛266510 中国科学院固体物理研究所材料物理重点实验室合肥230031

利用内耗方法对B2 Fe-Al合金的有序化过程进行了研究,并分析了有序化过程与原子换位运动之间的关系.对于油冷Fe_(47)Al_(53)合金,在570℃左右观察到一个内耗峰;但是对于炉冷样品,该峰并不出现.这个内耗峰具有典型的相变峰特征,XRD和DSC... 详细信息

利用内耗方法对B2 Fe-Al合金的有序化过程进行了研究,并分析了有序化过程与原子换位运动之间的关系.对于油冷Fe_(47)Al_(53)合金,在570℃左右观察到一个内耗峰;但是对于炉冷样品,该峰并不出现.这个内耗峰具有典型的相变峰特征,XRD和DSC显示,该峰的出现与样品的有序化过程有关,它产生于反位置原子通过最近邻的空位向自身亚晶格位置的跳动.油冷Fe_(57)Al_(43)合金中类似的峰出现在540℃附近.

关键词： B2 Fe-Al合金内耗有序度反位置原子

316L不锈钢表面激光熔覆Stellite-F合金层的电化学腐蚀行为

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金属热处理 2019年第1期44卷 176-179页

作者：钟晓康王幸福韩福生中国科学院固体物理研究所安徽合肥230031 中国科学技术大学安徽合肥230026

采用CO_2激光器在316L不锈钢表面熔覆Stellite-F合金,通过电化学方法研究了Stellite-F熔覆合金层在5wt%NaCl溶液中的腐蚀行为。结果表明:与316L不锈钢相比,与基材呈冶金结合的Stellite-F合金层自腐蚀电位较正、自腐蚀电流密度较小,无点... 详细信息

采用CO_2激光器在316L不锈钢表面熔覆Stellite-F合金,通过电化学方法研究了Stellite-F熔覆合金层在5wt%NaCl溶液中的腐蚀行为。结果表明:与316L不锈钢相比,与基材呈冶金结合的Stellite-F合金层自腐蚀电位较正、自腐蚀电流密度较小,无点腐蚀现象出现,耐海水腐蚀性能较好;研究发现,熔覆合金层物相主要由γ-Co固溶体与Ni_3C、Cr_(23)C_6碳化物构成,在盐溶液中其腐蚀失效机制为选择性腐蚀,即固溶体合金相作为阳极被腐蚀浸出,碳化物相得到阴极保护暴露析出,同时固溶体相中的Co、Ni组分优先被腐蚀浸出,其余组分形成海绵状结构。

关键词： 316L不锈钢激光熔覆 Stellite-F合金电化学腐蚀

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超轻开孔泡沫铝及其在航天领域的应用

航天器环境工程 2013年第6期30卷 570-575页

作者：韩福生中国科学院合肥物质科学研究院合肥230031

超轻开孔泡沫铝具有孔隙率高、质量小、比表面积大、比强度高等特征,是一种结构性与功能性兼备的新型材料,在航空航天、能源与环境等领域有广泛的应用前景。文章针对航天领域对轻质功能性材料的需求,介绍了超轻开孔泡沫铝的基本结构、... 详细信息

超轻开孔泡沫铝具有孔隙率高、质量小、比表面积大、比强度高等特征,是一种结构性与功能性兼备的新型材料,在航空航天、能源与环境等领域有广泛的应用前景。文章针对航天领域对轻质功能性材料的需求,介绍了超轻开孔泡沫铝的基本结构、性能特征以及相关研究进展,并对该材料在航天领域的应用进行了展望,希望为未来航天器的设计提供参考。

关键词：超轻开孔泡沫铝航空航天应用超轻泡沫金属功能性金属材料超轻开孔泡沫铝航空航天应用超轻泡沫金属功能性金属材料