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Correction to: Effect of Hot Deformation Parameters on the Dissolution of γ′ Precipitates for As-Cast Ni-Based Superalloys

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Journal of materials Engineering and Performance 2021年第2期31卷 1607-1608页

作者： Wan, Zhi-Peng Shen, Jing-Yuan Wang, Tao Wei, Kang Li, Zhao Yan, Sen Liu, Meng Hu, Lian-Xi Science and Technology on Advanced High Temperature Structural Materials Laboratory AECC Beijing Institute of Aeronautical Materials Beijing People’s Republic of China National Key Laboratory for Precision Hot Processing of Metals Harbin Institute of Technology Harbin People’s Republic of China AVIC Shangda Superalloys Co. Ltd Xingtai People’s Republic of China

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Unveiling High-Pressure Behavior of Sc3AlC MAX Phase: A Comprehensive Theoretical Study on Structural, Mechanical, Dislocation, and Electronic Properties

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Metals 2025年第5期15卷 492-492页

作者： Junping Xi Zhipeng Wang Linkun Zhang Li Ma Pingying Tang Department of Mechanical and Automotive Engineering Science and Technology College of Hubei University of Arts and Science Xiangyang 441025 China State Key Laboratory of Advanced Design and Manufacturing Technology for Vehicle Hunan University Changsha 410082 China State Key Laboratory for Powder Metallurgy Central South University Changsha 410083 China Guangxi Key Laboratory of Functional Information Materials and Intelligent Information Processing Nanning Normal University Nanning 530001 China

The structural, mechanical, dislocation, and electronic properties of the Sc3AlC MAX phase under applied pressure are investigated in detail using first-principles calculations. key parameters, including lattice parameter ratios, elastic constants, Young’s modulus, bulk modulus, shear modulus, brittle-to-ductile behavior, Poisson’s ratio, anisotropy, Cauchy pressure, yield strength, Vickers hardness, and energy factors, are systematically analyzed as a function of applied pressure. The results demonstrate that the Sc3AlC MAX phase exhibits remarkable mechanical stability within the pressure range of 0 to 60 GPa. Notably, applied pressure markedly improves its mechanical properties, such as resistance to elastic, bulk, and shear deformations. The B/G ratio suggests a tendency toward ductile behavior with increasing pressure, and the negative Cauchy pressure indicates the directional characteristics of interatomic bonding in nature. Vickers hardness and yield strength increase under pressures of 0 to 10 GPa and then decrease sharply above 50 GPa. High pressure suppresses dislocation nucleation due to the increased energy factors, along with twinning deformation. Furthermore, electronic structure analysis confirms that high pressure enhances the interatomic bonding in the Sc3AlC MAX phase, while the enhancement effect is not substantial. This study offers critical insights for designing MAX phase materials for extreme environments, advancing applications in aerospace and electronics fields.

关键词： MAX phase first-principles calculations mechanical properties energy factor high pressure

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Effective enhancement of the emission efficiency of tetraphenylporphyrin in solid state by tetraphenylethene modification

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Chinese Chemical Letters 2019年第1期30卷 143-148页

作者： Nan Jiang Yijia Wang Anjun Qin Jing Zhi Sun Ben Zhong Tang MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Guangdong Innovative Research Team State Key Laboratory of Luminescent Materials and Devices South China University of Technology Department of Chemistry Institute for Advanced Study Institute of Molecular Functional Materials and State Key Laboratory of Molecular Neuroscience The Hong Kong University of Science & Technology

Tetraphenylporphyrin(TPP) is a typical red-emitting luminogen showing evident aggregation caused quenching(ACQ) effect. To enhance its emission efficiency in solid state, four tetraphenylethene(TPE)units were attached to the four meso-positions of TPP core via ester group through a facile and efficient route. The derived compound(4(TPE-COO)-TPP) emits red fluorescence(peak at 655 nm) with a good quantum efficiency(F) of 7.5%, which is much higher than that of TPP(Φ～ 0.1%). In molecular aggregate formed in tetrahydrofuran(THF) and water mixtures, 4(TPE-COO)-TPP has a relative high F of 12%. The evidently subdued ACQ behavior can be ascribed to the propeller shape and bulky size of the TPE units,which prevent the close packing and strong p-p interaction of TPP cores. The loose molecular packing and weak interchromophore interactions were validated by different characterization methods including UV-visible absorption, steady state and transient fluorescence spectroscope, X-ray diffraction and scanning electronic microscope observations. It is noted that 4(TPE-COO)-TPP has an emission efficiency of 14.4% in dilute THF solution. This is due to the conjugation break between the TPP and TPE moieties, the rotational and vibrational motions of the phenyl groups cannot quench the fluorescence of 4(TPE-COO)-TPP.

关键词： Aggregation-induced emission Tetraphenylethene Porphyrin Red emission Molecular packing

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Single-Component MLCT-Active Photodetecting Material Based on a Two-Dimensional Coordination Polymer

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CCS Chemistry 2020年第1期2卷 655-662页

作者： Qing-Qing Huang Yan-Zhou Li Zhi Zheng Xiao-Ming Jiang Shan-Shan Sun Hui-Jie Jiang Wei-Hua Deng Guan-E Wang Tian-You Zhai Ming-De Li Gang Xu State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of Sciences(CAS)FuzhouFujian 350002(China) University of Chinese Academy of Sciences(UCAS) Beijing 100049(China) State Key Laboratory of Material Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and Technology(HUST)Wuhan 430074(China) Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province Shantou UniversityShantou 515063(China)

Conductive coordination polymers(CCPs)have shown great potential for electronic ***,their applications in photodetection have been limited by poor sensitivity,low on/off current ratio,and slow response owing to the low charge generation and/or separation *** this work,metal-to-ligand chargetransfer(MLCT)in PhSeAg was used to fabricate a single-component MLCT photodetecting material for the first time to solve the above *** material obtained possesses ultrahigh sensitivity to weak-light intensity(0.03 mW cm^(−2)),the highest on/off ratio,and the fastest response speed than other wellknown CCPs materials *** work might provide a simple but common strategy for designing high-performance CCPs composites for optoelectrical applications.

关键词： coordination polymer metal-organic chalcogenide metal-to-ligand charge transfer semiconductor optoelectronic material

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Long-term corrosion behaviors and wear behavior of Fe-based amorphous coatings in different humidity environments

Corrosion Communications

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Corrosion Communications 2025年

作者： Shuai Cui Haimin Zhai Zihan Feng Xuqiang Li Wensheng Li Xiangjuan Fan Dangsheng Xiong School of Materials Science and Engineering Nanjing University of Science and Technology Nanjing 210094 China State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals Lanzhou University of Technology Lanzhou 730050 China College of Physics and Electronic Engineering Northwest Normal University Lanzhou 730070 China

Fe-based amorphous coatings (Fe-based AMCs) were successfully prepared on Q235 carbon steel by detonation spray under different spraying parameters. The corrosion and tribology behaviors of coatings were systematically tested. The droplets show disk-like morphology with the highest circularity and expansion factor, which is crucial to reduce the defects of coatings and to form fine-lamellar-structures coatings with dense microstructure. A higher incidence of porosity defects in the coating is associated with reduced long-term corrosion resistance. Moreover, the tribo-chemical reactions between Si 3 N 4 balls and water molecules play a significant role in wear behaviors for coating in different humidity conditions. The friction coefficient and wear rate of coatings decrease as the humidity conditions increase.

关键词： Detonation spray Corrosion Tribology behaviors Humidity conditions

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High performance of La-doped Y2O3 transparent ceramics

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Journal of advanced Ceramics 2020年第4期9卷 493-502页

作者： Lei Zhang Jun Yang Hongyu Yu Wei Pan Shenzhen Institute of Wide-Bandgap Semiconductors and Engineering Research Center of Integrated Circuits for Next-Generation Communications of Ministry of Education School of MicroelectronicsSouthern University of Science and TechnologyShenzhen518055China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing100084China Department of General Education Army Engineering University of PLANanjing211101China

As an optical material,Y2O3 transparent ceramics are desirable for application as laser host ***,it is difficult to sinter and dense of Y2O3 hinders the preparation of high-quality optical ceramics via traditional *** this work,we use La2O3 as a sintering aid for fabricating high-transparency Y2O3 ceramics using a vacuum sintering *** is demonstrated that the in-line optical transmittance of 15.0 at%La-doped Y2O3 at a wavelength of 1100 nm achieves a transmittance of 81.2%.A sintering kinetics analysis reveals that a grain-boundary-diffusion-controlled mechanism dominates the faster densification at high La3+*** is also shown that both the mechanical and thermal properties of Y2O3 transparent ceramics are significantly improved upon the increase of La2O3 sintering *** results indicate that a La-doped Y2O3 transparent ceramic is a promising candidate for a laser host material.

关键词： Y2O3 transparent ceramics optical transmittance sintering kinetics mechanical properties thermal properties

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Refining microstructure and improving mechanical-corrosion properties of high Zn containing single β-phase Mg-Li alloy via friction stir processing

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materials Letters 2025年 397卷

作者： Yingxin Geng Mengran Zhou Yixing Zhu Tongzheng Xin Song Tang Zhuoran Zeng Gaoqiang Chen Ruizhi Wu Qingyu Shi State Key Laboratory of Clean and Efficient Turbomachinery Power Equipment Department of Mechanical Engineering Tsinghua University Beijing 100084 China Key Laboratory for Advanced Materials Processing Technology Ministry of Education Beijing 100084 China Key Laboratory of Solidification Control and Digital Preparation Technology (Liaoning Province) School of Materials Science and Engineering Dalian University of Technology Dalian 116024 China Herbert Gleiter Institute of Nanoscience School of Materials Science and Engineering Nanjing University of Science and Technology Jiangsu 210094 China State Key Laboratory of Advanced Design and Manufacturing Technology for Vehicle Hunan University Changsha 410082 China College of Materials Science and Engineering Hunan University Changsha 410082 China Key Laboratory of Superlight Materials & Surface Technology (Ministry of Education) Harbin Engineering University Harbin 150001 China

In this study, a β-phase Mg-14Li-22Zn alloy with high Zn content was fabricated via friction stir processing, demonstrating great potential for high-performance lightweight applications. The influence of tool rotation speed on microstructure evolution, mechanical properties, and corrosion behavior was investigated. Notably, significant improvements in compressive strength, work-hardening rate, and corrosion resistance were achieved, particularly at a tool rotation speed of 400 rpm, due to the uniform dispersion of MgZn 2 and MgLi 2 Zn phases within the fine-grained microstructure.

关键词： Compressive strength

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“One-Stone, Two-Birds”: Zinc-Rich Metal–Organic Frameworks as Precursors for High-Entropy Zn-Air Battery Electrocatalysts with Hierarchical Pore Structures

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Angewandte Chemie 2024年第1期137卷

作者： Jianwen Su Yinji Wan Long Feng Dingding Huang Hsing Kai Chu Xuan Zhang Xiaoye Geng Yonggang Wang Ruiqin Zhong Ruqiang Zou State Key Laboratory of Heavy Oil Processing China University of Petroleum Beijing No. 18 Fuxue Road Changping District 102249 Beijing China Beijing Key Laboratory for Theory and Technology of Advanced Battery Materials School of Materials Science and Engineering Peking University No. 5 Yiheyuan Road Haidian District 100871 Beijing China

The active sites of inexpensive transition metal electrocatalysts are sparse and singular, thus high-entropy alloys composed of non-precious metals have attracted considerable attention due to their multi-component synergistic effects. However, the facile synthesis of high-entropy alloy composites remains a challenge. Herein, we report a “one-stone, two-birds” method utilizing zinc (Zn)-rich metal–organic frameworks as precursors, by virtue of the low boiling point of Zn (907 °C) and its high volatility in alloys, high-entropy alloy carbon nanocomposite with a layered pore structure was ultimately synthesized. The experimental results demonstrate that the volatilization of zinc can prevent metal agglomeration and contribute to the formation of uniformly dispersed high-entropy alloy nanoparticles at slower pyrolysis and cooling rates. Simultaneously, the volatilization of Zn plays a crucial role in creating the hierarchically porous structure. Compared to the zinc-free HEA/NC-1, the HEA/NC-5 derived from the precursor containing 0.8 Zn exhibit massive micropores and mesopores. The resulting nanocomposites represent a synergistic effect between highly dispersed metal catalytic centers and hierarchical adsorption sites, thus achieving excellent electrocatalytic oxygen reduction performance with low catalyst loading compared to commercial Pt/C. This convenient zinc-rich precursor method can be extended to the production of more high-entropy alloys and various application fields.

关键词： High-Entropy Hierarchical Pore Structure Zn-rich Metal–Organic Frameworks Zn-Air Battery

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A Blinking Mesoporous TiO2−x Composed of Nanosized Anatase with Unusually Long-Lived Trapped Charge Carriers

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Angewandte Chemie 2020年第35期132卷 15110-15117页

作者： Zhang T. Low J. Yu J. Tyryshkin A.M. Mikmeková E. Asefa T. Department of Chemical and Biochemical Engineering Rutgers The State University of New Jersey 98 Brett Road Piscataway NJ 08854 United States State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology 122 Luoshi Road Wuhan Hubei 430070 China Department of Chemistry and Chemical Biology Rutgers The State University of New Jersey 610 Taylor Road Piscataway NJ 08854 United States Institute of Scientific Instruments of the ASCR Czech Academy of Sciences Královopolská 147 Brno 612 64 Czech Republic

A mesoporous TiO2−x material comprised of small, crystalline, vacancy-rich anatase nanoparticles (NPs) shows unique optical, thermal, and electronic properties. It is synthesized using polymer-derived mesoporous carbon (PDMC) as a template. The PDMC pores serve as physical barriers during the condensation and pyrolysis of a titania precursor, preventing the titania NPs from growing beyond 10 nm in size. Unlike most titania nanomaterials, during pyrolysis the NPs undergo no transition from the anatase to rutile phase and they become catalytically active reduced TiO2−x. When exposed to a slow electron beam, the NPs exhibit a charge/discharge behavior, lighting up and fading away for an average period of 15 s for an extended period of time. The NPs also show a 50 nm red-shift in their UV/Vis absorption and long-lived charge carriers (electrons and holes) at room temperature in the dark, even long after UV irradiation. The NPs as photocatalysts show a good activity for CO2 reduction. © 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

关键词： blinking nanoparticles carbon dioxide reduction long-lived charge carriers photocatalytic energy conversions titanium dioxide

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Correction to: Microbiologically Influenced Corrosion of AA 6061 with Bacillus Species in an Environment Containing an Organic Nitrogen Source

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Journal of materials Engineering and Performance 2021年第3期31卷 1881-1882页

作者： Bai, Ziheng Xiao, Kui Yao, Qiong Dong, Chaofang Zhang, Dongjiu Wu, Junsheng Zou, Shiwen Institute for Advanced Materials and Technology University of Science and Technology Beijing Beijing People’s Republic of China National Materials Corrosion and Protection Date Center University of Science and Technology Beijing Beijing People’s Republic of China Key Laboratory of Space Launching Site Reliability Technology Haikou People’s Republic of China Aerospace Research Institute of Materials and Processing Technology Beijing People’s Republic of China

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