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Rare Metals 2024年第10期43卷 4639-4776页

作者： wen-Tao Zhang wen Huang Fu-Jie Yu Qi Zhao Xin-Dong Zhu Tao Feng Yao jiang Xiao-Ming Li Xue-Fei Miao He Zhu Si Lan Xue-Qian Wang Bao-Long Shen Zhe Jia Feng-Qi Zhang Wei Wang Qi Liu Yang Ren Xun-Li Wang Xiao-Ya Cui Xiao-Yang Wang Ya-nan Chen Bing-Bing Fan Meng-Ru Li Qi-Long Gao Jia-Ming Guo Zeng-Bao Jiao Zhi-Min Guo Yu-Ping Zhao Qian Yu Rui Huang Ling-Kun Zhang Yi-Ping Lu Xu-Bo Li Huai-Jun Lin Yan Ma Wei-Ming Yang Zhi-Hua Shen Hai-Yan He Yong-Gang Sun Yong-jiang Huang De-Zhuang Wang Qing-Feng Liu Fei-Yang Wang Hui Liu Hong-Hui Wu Li-Qiang Wang Yang Lu nan Wang Tian-Li Wang Wei-Bing Liao Yi-Han Wang Yuan Wu Yu-Zhen Yin Jie Pan Yi Zhang Qing Wang Jian-Yang Zhang Tao Yang Yasir Sohail Jin-Yu Zhang Hua Ji Qiang Li Wei-Di Liu Zhi-Gang Chen Xiong-Jun Liu wen Ma Liang Mao Zhen-Duo Wu School of Materials Science and Engineering Nanjing University of Science and Technology jiangsu key laboratory for Advanced Metallic Materials School of Materials Science and Engineering Southeast University Department of Physics City University of Hong Kong School of Materials Science and Engineering Tianjin University School of Physics and Microelectronics Zhengzhou University Department of Mechanical Engineering Research Institute for Advanced Manufacturing The Hong Kong Polytechnic University center of Electron Microscopy and state key laboratory of Silicon Materials School of Materials Science and Engineering Zhejiang University key laboratory of Solidification Control and Digital Preparation Technology (Liaoning Province) School of Materials Science and Engineering Dalian University of Technology Institute of Advanced Wear & Corrosion Resistance and Functional Materials Jinan University School of Mechanics and Civil Engineering China University of Mining and Technology School of Physical Sciences Great Bay University School of Materials Science andEngineering Harbin Institute of Technology state key laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University Beijing Advanced Innovation center for Materials Genome Engineering Research Institute for Carbon Neutrality University of Science and Technology Beijing Department of Mechanical Engineering The University of Hong Kong School of Computing Macquarie University key laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic Engineering Shenzhen University state key laboratory for Advanced Metals and Materials University of Science and Technology Beijing state key laboratory of Materials processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Institute of materials Shanghai University Department of Materials Science and Engineering C

Owing to their exceptional properties, high-entropy alloys(HEAs) and high-entropy materials have emerged as promising research areas and shown diverse applications. Here,the recent advances in the field are comprehensively reviewed,organized into five sections. The first section introduces the background of HEAs, covering their definition, significance,application prospects, basic properties, design principles, and microstructure. The subsequent section focuses on cutting-edge high-entropy structural materials, highlighting developments such as nanostructured alloys, grain boundary engineering,eutectic systems, cryogenic alloys, thin films, micro-nano-lattice structures, additive manufacturing, high entropy metallic glasses, nano-precipitate strengthened alloys, composition modulation, alloy fibers, and refractory systems. In the following section, the emphasis shifts to functional materials, exploring HEAs as catalysts, magneto-caloric materials, corrosion-resistant alloys, radiation-resistant alloys, hydrogen storage systems, and materials for biomedicine. Additionally, the review encompasses functional high-entropy materials outside the realm of alloys, including thermoelectric, quantum dots, nanooxide catalysts, energy storage materials, negative thermal expansion ceramics,and high-entropy wave absorption materials. The paper concludes with an outlook, discussing future directions and potential growth areas in the field. Through this comprehensive review,researchers, engineers, and scientists may gain valuable insights into the recent progress and opportunities for further exploration in the exciting domains of high-entropy alloys and functional materials.

关键词： Cutting-edge structural materials Cutting-edgefunctional materials High entropy alloys

High electrocaloric cooling power of relaxor ferroelectric BaZr_xTi_(1–x)O_3 ceramics within broad temperature range

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Science Bulletin 2018年第6期63卷 356-361页

作者： Jianfeng Qian Penghao Hu Chen Liu Jianyong jiang Zhenkang Dan Jing Ma Yuanhua Lin ce-wen nan Yang Shen School of Materials Science and Engineering and State Key Laboratory of New Ceramics and Fine Processing Tsinghua University Institute for Advanced Materials and Technology University of Science & Technology Beijing

Electrocaloric effect （Ece） is much promising to realize high efficiency and environment friendly solution in solid cooling devices. Relaxor ferroelectrics are good candidates for the materials with high elec-trocaloric cooling power. In this paper, relaxor ferroelectric Ba（ZrxTil_x）O3 （BZT, x = 0.2, 0.21, 0.22, 0.23） ceramics were prepared with their temperature change （AT） induced by the Ece and electrocaloric strength （AT/E） measured within broad temperature range. It is found that the BZT21 （x = 0.21) exhibits the largest ATof-4.67 K and a high AT/E value of-0.46 km/MV at 9.9 MV/m and 25℃. BZT21 also exhi-bits apparent relaxor ferroelectric response, showing a very broad EC peak in the temperature interval between 15℃ and 50℃. Moreover, the relationship between EC properties and relaxor features was analyzed by piezoresponse force microscopy test. The results reveal that more dispersed phase structures induce additional configurational entropy, which is in favor for the enhanced EC performance. The inter-play and compromise between the kinetic and thermodynamic mechanisms of domain switching deter-mines the optimal composition for the EC performances of the BZT ceramics.

关键词： Electrocaloric effectRelaxor ferroelectricsPiezoresponse force microscopy Domain structure

Stretchable polymer composites with ultrahigh piezoelectric performance

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National Science Review 2023年第8期10卷 203-210页

作者： Tongxiang Tang Zhonghui Shen Jian Wang Shiqi Xu Jiaxi jiang Jiahui Chang Mengfan Guo Youjun Fan Yao Xiao Zhihao Dong Houbing Huang Xiaoyan Li Yihui Zhang Danyang Wang Long-Qing Chen Ke Wang Shujun Zhang ce-wen nan Yang Shen state key Lab of new ceramics and fine processing School of Materials Science and Engineering Tsinghua University state key laboratory of Advanced Technology for Materials Synthesis and processing Center of Smart Materials and Devices Wuhan University of Technology Advanced Research Institute of Multidisciplinary Science Beijing Institute of Technology Applied Mechanics laboratory Department of Engineering Mechanics Tsinghua University center for Flexible Electronics Technology Tsinghua University School of Materials Science and Engineering University of New South Wales Department of Materials Science and Engineering The Pennsylvania State University State College Institute for Superconducting and Electronic Materials Australian Institute for Innovative MaterialsUniversity of Wollongong

Flexible piezoelectric materials capable of withstanding large deformation play key roles in flexible electronics. Ferroelectric ceramics with a high piezoelectric coefficient are inherently brittle, whereas polar polymers exhibit a low piezoelectric coefficient. Here we report a highly stretchable/compressible piezoelectric composite composed of ferroelectric ceramic skeleton, elastomer matrix and relaxor ferroelectric-based hybrid at the ceramic/matrix interface as dielectric transition layers, exhibiting a giant piezoelectric coefficient of 250 picometers per volt, high electromechanical coupling factor keff of 65%,ultralow acoustic impedance of 3MRyl and high cyclic stability under 50% compression strain. The superior flexibility and piezoelectric properties are attributed to the electric polarization and mechanical load transfer paths formed by the ceramic skeleton, and dielectric mismatch mitigation between ceramic fillers and elastomer matrix by the dielectric transition layer. The synergistic fusion of ultrahigh piezoelectric properties and superior flexibility in these polymer composites is expected to drive emerging applications in flexible smart electronics.

关键词： polymer composites piezoelectric materials structure design flexible electronics

Tuning ferroelectricity of polymer blends for flexible electrical energy storage applications

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Science China Materials 2021年第7期64卷 1642-1652页

作者： Xin Zhang Yanda jiang Ruoqi Gao Xinhui Li Zhonghui Shen Bao-wen Li Qingfeng Zhang Shujun Zhang ce-wen nan state key laboratory of Advanced Technology for Materials Synthesis and processing Center of Smart Materials and DevicesWuhan University of TechnologyWuhan 430070China International School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China Hubei key Lab of Ferro&Piezoelectric Materials and Devices School of Materials Science&EngineeringHubei UniversityWuhan 430062China Institute for Superconducting and Electronic Materials Australian Institute of Innovative MaterialsUniversity of WollongongNorth WollongongNSW 2500Australia School of Materials Science and Engineering State Key Lab of New Ceramics and Fine ProcessingTsinghua UniversityBeijing 100084China

Ferroelectric polymers are the mainstay of advanced flexible electronic *** to tailor the ferroelectric polymer films for various applications via simple processing approaches is *** we demonstrate the tuning of ferroelectric responses can be achieved in polymer blends of poly(vinylidene fluoride-trifluoroethylene)(P(VDF-TrFE))and polymethyl methacrylate(PMMA)prepared via a simple two-step *** proposed two-step process endows the polymer blends with a random distribution of P(VDF-TrFE)crystalline phase,hence decoupling the coherent ferroelectric domain interactions between continuous ordered crystalline phases that ubiquitously existed in common P(VDF-TrFE)*** incorporation of the miscible non-crystalline PMMA chains with low-polarity results in reversal dipoles and a transition from ferroelectric to antiferroelectric-like behavior,overcoming the trade-off between the polarization and depolarization *** particular,resultant excellent mechanical and electrical properties of the polymer blend films give rise to remarkably improved breakdown strength and energy storage performance,surpassing P(VDF-TrFE)and commercial biaxial-oriented polypropylene *** work provides a simple and effective strategy to tailor the ferroelectric response of polymeric materials with great potential for flexible electrical energy storage applications.

关键词： ferroelectric polymers antiferroelectricity energy density breakdown strength dielectric

Ultrasound-driven BaTiO_(3) nanorobots patching immunologic barrier to cure chronic rheumatoid arthritis

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Journal of Advanced ceramics 2023年第5期12卷 1105-1117页

作者： Le jiang Yifan Wang Chunlin Liu nan Xu wenshuo Li lei Wang Yixian Wu Jingyun Wang Zhijun He Fengbo Sun Lingyun Zhao Qiong Wu Xiumei Wang Huihui Yuan Xiaohui Wang Xiaodan Sun state key laboratory of new ceramics and fine processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China key laboratory of Advanced Materials of Ministry of Education of China School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China MOE key Lab.Bioinformatics School of Life SciencesTsinghua UniversityBeijing 100084China Department of Immunology School of Basic Medical SciencesCapital Medical UniversityBeijing 100069China

The disruption and reconstruction of the TREM2^(+) tissue resident macrophage(TRM)barrier on the surface of synovial lining play a key role in the activation and"remission"of rheumatoid arthritis(RA),which engender the prediction of this immunologic barrier as a potential driver for the achievement of"cure"in ***,strategies to promote the reconstruction of this barrier have not been reported,and the effect of patching this barrier remains *** the other hand,appropriate piezoelectric stimulation can reprogram macrophages,which has never been exerted on this barrier TRM ***,we design piezoelectric tetragonal BaTiO_(3)(BTO)ultrasound-driven nanorobots(USNRs)by the solvothermal synthesis method,which demonstrates satisfactory electro-mechanical conversion effects,paving the way to generate controllable electrical stimulation under ultrasound to reprogram the barrier TRM by minimally invasive injection into joint *** is demonstrated that the immunologic barrier could be patched by this USNR effectively,thereby eliminating the hyperplasia of vessels and nerves(HVN)and ***,TREM2 deficiency serum-transfected arthritis(STA)mice models are applied and proved the indispensable role of TREM2 in RA curing mediated by *** all,our work is an interesting and important exploration to expand the classical tetragonal BTO nanoparticles in the treatment of autoimmune diseases,providing a new idea and direction for the biomedical application of piezoelectric ceramics.

关键词： ultrasound-driven BaTiO_(3)nanorobots(BTO NRs) immunologic barrier upstream driver rheumatoid arthritis(RA)

In-situ microstructural evolutions of 5Mn steel at elevated temperature in a transmission electron microscope

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Journal of Iron and Steel Research International 2017年第11期24卷 1109-1114页

作者： Han-bo jiang Xi-nan Luo Xiao-yan Zhong Hui-hua Zhou Cun-yu Wang Jie Shi Han Dong National center for Electron Microscopy in Beijing Key Laboratory of Advanced Materials(MOE)State Key Laboratory of New Ceramics and Fine ProcessingSchool of Materials Science and EngineeringTsinghua UniversityBeijing 100084China central Iron and Steel Research Institute Beijing 100081China

The microstructural evolutions of 5Mn steel during various heat treatments have been investiga- ted by in-situ transmission electron microscopy （TEM）. The specimen of 5Mn steel was pre- pared using focused ion beam （FIB） milling, which allowed the selection of specific morphology of interest prior to the in-situ observation, The complete austenization at 800 ℃ was verified at the atomic scale by minimizing thermal expansion and sample drift in a heating holder based on micro-electro-mechanical-systems. During annealing at 650 ℃, the formation of reverted austen- ite was dynamically observed, while the morphologies of austenite laths of 5Mn steel after in-situ heating were quite similar to that after ex-situ intereritical annealing. During annealing at 500 ℃, the morphological evolution of cementite and associated Mn diffusion were investigated. It was demonstrated that a combination of FIB sampling and high temperature in-situ TEM enables us to probe the morphological evolution and elemental diffusion of specific areas of interest in steel at high spatial resolution.

关键词： 5Mn steel Focused ion beam milling In-situ observation Microstructural evolution Austenite cementite

Development of methods for detecting the fate of mesenchymal stem cells regulated by bone bioactive materials

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Bioactive Materials 2021年第3期6卷 613-626页

作者： jiang Le Liu Zhongqun Wang Zhaoyan Su Yijun Wang Yingjin Wei Yaojie jiang Yanan Jia Zhanrong Ma Chunyang Gang Fangli Xu nan Zhao Lingyun Wang Xiumei Wu Qiong Lu Xiong Sun Xiaodan state key laboratory of new ceramics and fine processing School of Materials Science and EngineeringTsinghua UniversityBeijing100084People's Republic of China key laboratory of Advanced Materials of Ministry of Education of China School of Materials Science and EngineeringTsinghua UniversityBeijing100084People's Republic of China key Lab of Advanced Technologies of Materials of Ministry of Education School of Materials Science and EngineeringSouthwest Jiaotong UniversityChengdu610031People's Republic of China MOE key laboratory of Bioinformatics Tsinghua UniversityBeijing100084People's Republic of China center for Synthetic and Systems Biology Tsinghua UniversityBeijing100084People's Republic of China School of Life Sciences Tsinghua UniversityBeijing100084People's Republic of China

The fate of mesenchymal stem cells(MSCs)is regulated by biological,physical and chemical *** in biotechnology and materials science promoted the occurrence of bioactive materials which can provide physical and chemical signals for MSCs to regulate their *** order to design and synthesize materials that can precisely regulate the fate of MSCs,the relationship between the properties of materials and the fate of mesenchymal stem cells need to be clarified,in which the detection of the fate of mesenchymal stem cells plays an important *** the past 30 years,a series of detection technologies have been developed to detect the fate of MSCs regulated by bioactive materials,among which high-throughput technology has shown great advantages due to its ability to detect large amounts of data at one *** this review,the latest research progresses of detecting the fate of MSCs regulated by bone bioactive materials(BBMs)are systematically reviewed from traditional technology to high-throughput technology which is emphasized ***,current problems and the future development direction of detection technologies of the MSCs fate regulated by BBMs are *** aim of this review is to provide a detection technical framework for researchers to establish the relationship between the properties of BMMs and the fate of MSCs,so as to help researchers to design and synthesize BBMs better which can precisely regulate the fate of MSCs.

关键词： Bone bioactive materials High-throughput technology Transcriptomics Single cell RNA-seq Proteomics

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光丝同轴激光增材制造研究进展

材料科学与工艺 2022年第2期30卷 16-27页

作者：陈源姜梦陈曦马生翀姜楠雷正龙陈彦宾先进焊接与连接国家重点实验室(哈尔滨工业大学) 哈尔滨150001

增材制造作为实现三维结构快速成形的技术,广泛用于航空航天、汽车交通等领域。当前,激光熔丝增材制造多依托于传统的激光焊接设备,采用旁轴送丝方式,在增材过程中,需调整激光头方向保证送丝和焊接头行进的相对方位,增大了复杂构件增材... 详细信息

增材制造作为实现三维结构快速成形的技术,广泛用于航空航天、汽车交通等领域。当前,激光熔丝增材制造多依托于传统的激光焊接设备,采用旁轴送丝方式,在增材过程中,需调整激光头方向保证送丝和焊接头行进的相对方位,增大了复杂构件增材制造系统控制难度,损失了加工自由度。随着激光加工设备和技术的发展,近年来出现了一种可以解决上述问题的光丝同轴激光熔丝增材制造技术。由于此项技术刚刚起步,为了更好的理解光丝同轴激光熔丝增材制造技术的特性,本文从技术分类及原理、加工制造特性、成形精度控制以及增材件的组织性能等方面,论述了光丝同轴激光增材制造取得的研究进展,对比分析了光丝同轴技术与旁轴激光熔丝技术的差异性,阐述了用于光丝同轴技术的两种成形精度方法及特点,分析了光丝同轴增材件的组织与性能;最后,指出了光丝同轴技术未来的发展趋势。

关键词：增材制造激光熔丝光丝同轴工艺特性成形质量

冲击荷载下珊瑚礁灰岩动态力学特性及损伤特征

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长江科学院院报 2023年第5期40卷 85-93页

作者：雷学文李浩明孟庆山洪胜男周皓然蒋雪武汉科技大学城市建设学院武汉430065 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室武汉430071 桂林理工大学土木与建筑工程学院广西桂林541004

为研究2种珊瑚礁灰岩在冲击荷载下的动态力学特性和损伤特征,利用分离式霍普金森压杆(SHPB)试验系统,对珊瑚格架灰岩和珊瑚砂屑灰岩进行10~190 s-1应变率范围内的冲击压缩试验,得到不同应变率下珊瑚礁灰岩的应力-应变曲线,分析试验中试... 详细信息

为研究2种珊瑚礁灰岩在冲击荷载下的动态力学特性和损伤特征,利用分离式霍普金森压杆(SHPB)试验系统,对珊瑚格架灰岩和珊瑚砂屑灰岩进行10~190 s-1应变率范围内的冲击压缩试验,得到不同应变率下珊瑚礁灰岩的应力-应变曲线,分析试验中试样的动态峰值应力和弹性模量的应变率效应及能量耗散规律,并结合高分辨率CT扫描和图像处理技术,揭示试样的损伤破坏特征。结果表明:格架灰岩的动态应力-应变曲线具有明显的弹性变形阶段,而砂屑灰岩的压密阶段较为明显;动态峰值应力随应变率的增大呈幂函数增长,格架灰岩的应变率效应较明显,动态弹性模量与应变率满足负指数关系;格架灰岩对能量的吸收能力整体强于砂屑灰岩;珊瑚礁灰岩损伤裂纹多沿生物组分胶结差、贯通孔隙多的部位发生,中高应变率下格架灰岩的损伤裂纹以骨架扩展贯通为主,呈脆性劈裂破坏,而砂屑灰岩主要发生穿孔传播,呈压碎破坏模式,研究成果对岛礁工程建设中动力灾害的预防具有一定的指导意义。

关键词：动态峰值应力损伤特征珊瑚礁灰岩应变率效应能量耗散动力灾害预防