Wei Niu

Critical behavior and modulated magnetic interactions in Se-doped van der Waals ferromagnet Fe3GeTe2

Hanxuan Cui, Qihang He, Kehan Li, Yujie Cui et autres

Exceptional Multifunctional Performance Enabled by a Network Architecture in Additively Manufactured NiFe‐Based Soft Magnetic Alloys

Hui Xue, Haixiao Fan, Wei Niu, Yang Zheng et autres

ABSTRACT The mechanical properties and corrosion resistance of traditionally as‐cast soft magnetic Ni‐50Fe alloys often fail to meet current application requirements. To address this limitation, this study employed direct energy deposition (DED) to fabricate two kinds of soft magnetic alloys: Ni‐50Fe and …

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Influence of B4C Content on the Properties and Microstructure of CoCrFeNiSi High-Entropy Alloy Coatings by Plasma Cladding

Lianwang Zhang, Jianfeng Yue, Zhenyang Yu, Qi Sun et autres

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Additive manufacturing of Ni50Fe soft magnetic alloy with balanced magnetic and mechanical properties via directed energy deposition

Hui Xue, Haixiao Fan, Jianda Chen, Lei Wang et autres

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Numerical simulation research on impact response characteristics of M-type foldcore sandwich structure with different impact angles

Yuan De Yin, Xin Tan, Zhengyong Cheng, Jian Li et autres

To meet the growing demand for multifunctional structural materials in aerospace and other advanced fields, an improved M-type foldcore sandwich structure is proposed. Considering the scarcity of research on its dynamic response and energy absorption under multi-angle impacts, this research establishes an …

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Research on Dynamic Capacity Increase of Overhead Power Transmission Lines Under High Wind Conditions

Wei Niu, Hourong Zhang, Xianying Mao, Bo Gong et autres

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Effects of annealing on the microstructural evolution and properties of CoCrFeNiW0.6Mo0.4 high-entropy alloy coatings

Lianwang Zhang, Jianfeng Yue, Qi Sun, Jiawei Yang et autres

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Biomechanics-based Gradient Nano-surface Implants Screening and Its Adoption in Dental Implant Repair

Wei Niu, Xin Wang, Li Tao, Bo Feng

BACKGROUND: this study aimed to screen the micro/nano surface of pure titanium implant gradient for performance analysis, and to explore its role in dental implant repair. METHODS: after treatment with different concentrations of hydrofluoric acid and varying etching times, titanium plates with …

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A novel polyimide-co-hexaazatripheylene covalent organic framework carbon nanotube composite as negative material of pseudocapacitor

Yuyu Dai, Jiapeng Huang, Yiran Vicky Zhao, Wei Niu et autres

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Cathode-Induced C–H Functionalization of 1,4-Quinones with Aryldiazonium Salts

Yuyu Dai, Xiangsheng Xu, Wei Niu, Miao Cui et autres

Abstract A mild and green method was developed for the aryl-monosubstituted or aryl-disubstituted quinones compounds under electrochemical conditions. We found that the existence of O2 and trace water may be beneficial to the formation of product. This protocol exhibits a broad range …

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Research Status and Prospects of In-space Additive Manufacturing

Zheng Yang, Cenya Zhao, XIONG Ruize, Wei Niu et autres

摘要： 空间增材制造(In-space additive manufacturing,ISAM)是实现深空探索、太空资源高效利用以及地外行星长期居住的关键技术。与常规的地面增材制造相比，高真空、强辐射、微低重力、极端温度变化等复杂太空环境给ISAM的发展与应用带来了诸多困难，亟须在设备兼容性、工艺控制以及原材料选用等方面取得创新与突破。目前，ISAM研究主要集中在两个前沿领域：在轨制造与地外行星表面建造；在研技术涵盖材料挤出、直接能量沉积、粉末床熔融、立体光刻、计算轴向光刻等多种成型工艺。综述了国内外ISAM技术的研究进展与发展趋势，对比了与空间环境相关的增材制造技术原理及工艺特点，总结了典型微低重力验证平台及试验方法，梳理了面向真实空间环境的增材制造研究案例，分析了ISAM技术发展所面临的重大挑战及潜在机遇，展望了ISAM技术未来的重要研究方向。

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Photo-induced amidation/Smiles rearrangement of alkenes for synthesizing quaternary-carbon-containing succinyldiamides

Yuyu Dai, Wei Niu, Jiapeng Huang, Xiangsheng Xu

-(arylsulfonyl)acrylamides. This method was found to display several advantageous features including compatibility with many substrates, easily accessible starting materials, and operational simplicity.

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