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Journal of Iron and Steel Research International 2018年第3期25卷 261-267页

作者： Bin Luo hong-xian shen Lin Lin Hai-chao Li Da-wei Xing Jian-fei Sun School of Mechatronics Engineering Harbin Institute ofTechnology Harbin 150001 Heilongjiang China School of Materials Science and Engineering HarbinInstitute of Technology Harbin 150001 Heilongjiang China

Gd50Al3oCo20 wires show excellent magnetocaloric properties and high heat exchange rate due to the microsize. The Weibull and lognormal methods were used for systematically analyzing its mechanical properties for matching the design requirements in cooling system. The wire exhibits average fracture strength of-969.5 MPa and typical fracture behavior of amorphous character. Moreover, the distributions of stresses for tensile strains at 10 values are estimated by probability plot and Chi-square goodness-of-fit test. The random stresses were best fitted by lognormal probability distribution for most studied cases; however, fracture strength was best fitted by Weibull probability distribution. It is interesting to note that the mean and standard deviation of the stresses （to reach specific tensile strain） increase as the tensile strain grows, accompanied by the coefficients of variation of stresses which decrease smoothly. It is concluded that the inhomogeneity of material does cause the scatter of stresses growth, and the scatter could be considerably large.

关键词： Gd50Al30Co20 amorphous wire Tensile property Statistical analysis Variation coefficient

Microstructure and magnetocaloric properties of melt-extracted SmGdDyCoAl high-entropy amorphous microwires

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Rare Metals 2024年第3期43卷 1234-1242页

作者： Shi-Jie Wei hong-xian shen Lun-Yong Zhang Lin Luo Xin-Xing Tang Jian-Fei Sun Xiao-Qing Li School of Materials Science and Engineering Harbin Institute of TechnologyHarbin150001China Applied Materials Physics Department of Materials Science and EngineeringKTH-Royal Institute of Technology10044StockholmSweden

This paper presents a systematic investigation of the microstructure and magnetocaloric properties of melt-extracted Sm_(20)Gd_(20)Dy_(20)Co_(20)Al_(20)high-entropy *** fabricated wires exhibited an amorphous structure,and the temperature interval of the undercooled liquid AT was 45 *** microwires underwent a second-order magnetic transition from a ferromagnetic to a paramagnetic state near the Curie temperature(T_(C)=52 K),The maximum magnetic entropy change(-ΔS_M^(max)),the relative cooling power and the refrigeration capacity reached 6.34 J·kg^(-1)·K^(-1).422.09 J·kg^(-1)and 332.94 J·kg^(-1),respectively,under a magnetic field change of 5 *** addition,the temperature-averaged entropy changes with two temperature lifts(3 and 10 K)were 6.32 and 6.27 J·kg^(-1)·K^(-1),*** good magnetocalorie performance highlights the significant potential for the Sm_(20)Gd_(20)Dy_(20)Co_(20)Al_(20)microwires to be used as magnetic refrigerant materials in low-temperature region *** work will serve as a valuable reference for future investigations on low-temperature high-entropy magnetocaloric materials.

关键词： Melt-extraction High-entropy amorphous microwires Magnetocaloric effect Magnetic refrigeration

Effect of Al22Si/ZL102 bimetal interface fabricated by extrusion at neareutectic temperature

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Journal of Iron and Steel Research International 2017年第4期24卷 469-474页

作者： Jun-feng Zhao Shan-guang Liu Xiao-guang Yuan Jian-fei Sun hong-jun Huang Fu-yang Cao hong-xian shen Yu-long Wang School of Materials Science and Engineering Shenyang University of TechnologyShenyang 110178LiaoningChina Beijing Institute of Aeronautical Materials Beijing 100095China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001HeilongjiangChina

The Al22Si/ZL102 bimetal was designed and prepared by extrusion at near-eutectic *** properties and fracture behaviors of different surface treatments between oxide film and zinc coating were compared between the Al22 Si and ZL102 *** average bonding strength of bimetal with intermittent oxide film interface was about 89.3MPa,which is higher than that of the bimetal fabricated by zinc coating method（about 76.3MPa）.During the process of extrusion,the oxidation film was extruded to crush and the metal was extruded through the micro-cracks of the oxidation film,then the two surfaces were joined ***,the results showed that extrusion at near-eutectic temperature is favorable for achieving a high-quality metallurgical bonded interface.

关键词： Bimetal Oxide film Interface bonding strength Zinc coating

Tensile properties and fracture reliability of a glass-coated Co-based amorphous microwire

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International Journal of Minerals,Metallurgy and Materials 2014年第6期21卷 583-588页

作者： Xiao-dong Wang Huan Wang hong-xian shen Fa-xiang Qin Da-wei Xing Jing-shun Liu Dong-ming Chen Jian-fei Sun School of Materials Science and Engineering Harbin Institute of Technology 1D Nanomaterials Group National Institute for Material Science

Co68.15Fe4.35Si12.25B15.25 （at%） amorphous microwires with a smooth surface and a circular cross-section were fabricated by the glass-coated melt spinning method. Their mechanical properties were evaluated through tensile tests of the glass-coated amorphous mi-crowires, and their fracture reliability was estimated using two-and three-parameter Weibull analysis. X-ray diffraction and transmission electron microscopy results showed that these glass-coated Co-based microwires were mostly amorphous. The coated Co-based microwires exhibit a tensile strength of 1145 to 2457 MPa, with a mean value of 1727 MPa and a variance of 445 MPa. Weibull statistical analysis showed that the tensile two-parameter Weibull modulus of the amorphous microwires is 4.16 and the three-parameter Weibull modulus is 1.61 with a threshold value as high as 942 MPa. These results indicate that the fabricated microwires exhibit good tensile properties and fracture reliability, and thus appear to be good candidates for electronics reliability engineering applications.

关键词： cobalt alloys amorphous alloys glass fracture tensile testing

Impacts of zinc layer and pouring method on interface performance for Al-22Si/ZL104 bi-metal

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China Foundry 2017年第1期14卷 39-45页

作者： Jun-feng Zhao Fu-yang Cao Jian-fei Sun Xiao-guang Yuan hong-xian shen Xin-yi Zhao School of Materials Science and Engineering Shenyang University of TechnologyShenyang 110178China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China

Bi-metal material consisting of spray-formed Al-22Si and ZL104 is a suitable candidate for applications in internal combustion engines. This research investigated the effects of surface treatment and appropriate gating system on the microstructures and mechanical properties in evaluating the optimal strategy for producing high quality bi-metal materials. The bi-metal materials were prepared using ZL104 gravity casting by different pouring types around the spray-formed AI-22Si with varied surface treatments. The wettability between AI-22Si and ZL104 was significantly improved when Zn coating was used to remove the natural oxide layer. This research also obtained the improved interfacial microstructures and interracial bonding strength for materials when applying the appropriate pouring method. The hardness profiles of AI-22Si/ZL104 bi-metal were consistent with the observed microstructures. The average tensile strength of the bi-metal material with zinc coating is -42.3 MPa, which is much higher than that with oxide film at -10 MPa. The process presented is a promising and effective approach for developing materials in the automotive industry.

关键词： bi-metal AI alloy interface bonding zinc coating

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海底沙波分类与演化研究进展

中国海洋大学学报（自然科学版） 2017年第10期47卷 73-82页

作者：单红仙沈泽中刘晓磊文明征朱超祁贾永刚中国海洋大学环境科学与工程学院山东青岛266100 山东省海洋环境地质工程重点实验室中国海洋大学山东青岛266100

海底沙波普遍存在且严重危害海底工程,成为人们日益关注的热点。为了加深对海底沙波研究的认识,总结论述了海底沙波的分类与成因,重点对海底沙波迁移的预测、观测进行了分析。结果表明,对海底沙波的成因认识逐步加深、分类逐步细化,成... 详细信息

海底沙波普遍存在且严重危害海底工程,成为人们日益关注的热点。为了加深对海底沙波研究的认识,总结论述了海底沙波的分类与成因,重点对海底沙波迁移的预测、观测进行了分析。结果表明,对海底沙波的成因认识逐步加深、分类逐步细化,成因及迁移过程是多种水动力因素共同作用的结果,但形成及迁移的机制至今仍未有系统理论形成。由于缺乏长期观测数据,无法对海底沙波的迁移进行准确预测。今后研究的方向主要是,将理论研究与现场观测紧密结合,设计新的原位长期观测方法,完善预测模型,建立全面的资料数据库为海底基础工程预警。

关键词：海底沙波分类成因迁移原位观测

Identifying RNA-binding proteins using multi-label deep learning

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Science China(Information Sciences) 2019年第1期62卷 217-219页

作者： Xiaoyong PAN Yong-xian FAN Jue JIA hong-Bin shen Department of Medical Informatics Erasmus MC Guangxi Key Laboratory of Trusted Software Guilin University of Electronic Technology Affiliated Hospital of Jiangsu University Department of Automation Shanghai Jiao Tong University Key Laboratory of System Control and Information Processing Ministry of Education of China

Dear editor,RNA-binding proteins (RBPs) are involved in both transcriptional and post-transcriptional gene regulation, such as RNA splicing and localization. In addition, their dysregulations are closely associated with many diseases [1]. For example, mutations in the RBPs FUS and TDP-43that can cause amyotrophic lateral sclerosis [2].

关键词： RBP RNA Identifying RNA-binding proteins using multi-label deep learning

Preparation of PMAA-coated Dysprosium Ferrite Ferrofluids and Study on the Superparamagnetism

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Chemical Research in Chinese Universities 2002年第1期18卷 30-33页

作者： ZHU Chuan-zheng shen Qin HU xian-luo ZHANG Jie ZHAO hong Department of Chemistry East China Normal UniversityShanghai 200062P.R.China

The present paper covers the unprecedented preparation of stable aqueous Dy-ferrite ferrofluids, whereby colloidal Dy_ δ Fe_ 3- δ O_4 ultrafine particles were dispersed by using polymeric surfactant PMAA. The stabilities of the series of the ferrofluids were studied according to the stability indexes. The susceptibility measurements were made with a Farady-type magnetic balance at various temperatures and magnetic field intensities. In terms of Langevin function, the σ versus H/T curves showed that Dy-ferrite ferrofluids exhibited superparamagnetism behavior and the blocking temperatures were in the range from 160 to 200 K. Moreover, the ferrofluids were characterized by means of Infra-red spectroscopy, transmission electron microscopy, X-ray diffraction, and Mssbauer spectroscopy.

关键词： Dy-ferrite ferrofluid Susceptibility Superparamagnetism Stability PMAA

Synthesis and optical properties of Cu_2SnZnS_4 films under different sulfur atmospheres

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Rare Metals 2018年第9期37卷 808-814页

作者： xian-Cong He hong-Lie shen Jin-hong Pi Chuan-xiang Zhang Yu Hao Xiao-Bo Shi Department of Materials Science and Engineering Nanjing Institute of Technology College of Materials Science and Technology Nanjing University of Aeronautics and Astronautics

The electrodeposited precursor is a mixture of Cu, Sn, and Zn alloys, these elements form Cu6Sn5 and CuZn binary phases, and subsequently these phases trans- form into many binary and ternary intermediates, such as CuS, ZnS, Cu2SnS3, and Cu2ZnSnS4 （CZTS） at low annealing temperature in pure sulfur and H2S atmospheres. Finally, CZTS films can be dizing at 550 ℃ for 1 h in completely formed by sulfi- pure sulfur and H2S atmo- spheres. However, the initial temperature of synthesizing CZTS in H2S atmosphere is higher than that in pure sulfur atmosphere, but the highest temperature of synthesizing CZTS in H2S atmosphere is lower than that in pure sulfur atmosphere. The direct band gaps of the CZTS films syn- thesized at 550 ℃ for 1 h in pure sulfur and H2S atmo- spheres are about 1.54 and 1.52 eV, respectively.

关键词： Cu2ZnSnS4 Electrodeposited precursor Annealing Optical properties

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铂修饰氮化铝纳米管对CO的吸附性能研究

原子与分子物理学报 2025年第1期42卷 88-94页

作者：任舒宁何建桥黄海深沈光先吴波贵州师范大学物理与电子科学学院贵阳550025 遵义师范学院物理与电子科学学院遵义563006

本文采用基于密度泛函理论的第一性原理研究了铂修饰的(5,5)氮化铝纳米管的几何结构、电子性质以及与一氧化碳(CO)之间的相互作用.结果表明:铂原子吸附于氮化铝纳米管表面氮原子的顶位时能量最低.铂原子附近可以吸附四个CO分子,平均吸... 详细信息

本文采用基于密度泛函理论的第一性原理研究了铂修饰的(5,5)氮化铝纳米管的几何结构、电子性质以及与一氧化碳(CO)之间的相互作用.结果表明:铂原子吸附于氮化铝纳米管表面氮原子的顶位时能量最低.铂原子附近可以吸附四个CO分子,平均吸附能在1.189-2.940 eV之间,铂原子的修饰有效提高了氮化铝纳米管对CO分子的吸附能力.本研究为实验上开发制备性能更加优良的CO气体传感器提供理论指导.

关键词：氮化铝纳米管第一性原理密度泛函理论