检索结果-内蒙古大学图书馆

Formation mechanism of basin-like depression defect in electric upsetting process of Ni80A superalloy

Transactions of Nonferrous Metals Society of China 2022年第10期32卷 3276-3290页

作者： Guo-zheng QUAN Xue SHENG Kun YANG Yan-ze YU Wei XIONG Chongqing Key Laboratory of Advanced Mold Intelligent Manufacturing College of Materials Science and EngineeringChongqing UniversityChongqing 400044China State Key Laboratory of Materials Processing and Die&Mould Technology Huazhong University of Science and TechnologyWuhan 430074China Nanjing Jiepin Intelligent Technology Co. Ltd.Nanjing 210000China Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education Collaborative Innovation Center of Advanced Nuclear Energy TechnologyInstitute of Nuclear and New Energy TechnologyTsinghua UniversityBeijing 100084China

A kind of surface instability,basin-like depression defect companied by mixed grain structure at the bottom of large-scale valve during electric upsetting process,would significantly influence the microstructures and mechanical properties of *** order to analyze the forming process of the basin-like depression defect,a finite element model for the electric upsetting process of Ni80A superalloy was developed using multi-field and multi-scale coupling analysis ***,a series of parameters loading path schemes for force and current were designed by varying the initial value,peak value and value level,and their effects on basin-like depression and mixed grain structure were simulated and *** is concluded that the changes of heating speed and pressurization speed result in the different flow velocities between the inner and outer layers of billet,thus exerting the basin-like *** results also indicate that these defects can be optimized through the parameter coordination between force and ***,the validity and reliability of the finite element model were verified by physical experiments in electric upsetting process.

关键词： electric upsetting process defect Ni80A superalloy microstructure evolution mixed grain structure

来源：评论

学校读者我要写书评

暂无评论

Highly Processable wTSV Modular Manufacturing for Next Generation 3D MEMS/NEMS Integrated System

Highly Processable wTSV Modular Manufacturing for Next Gener...

引用

2022 China Semiconductor technology International Conference, CSTIC 2022

作者： Zhang, Simian Deng, Xiaonan Wang, Yuqi Wu, Yifei Ke, Shengxian Li, Linsen Xing, Chaoyang Li, Zhengcao Wang, Chen School of Materials Science and Engineering Tsinghua University State Key Laboratory of New Ceramics and Fine Processing Key Laboratory of Advanced Materials of Ministry of Education Beijing100084 China The 43rd Research Institute of Cetc Anhui Province Key Laboratory of Microsystem Anhui Hefei230088 China Beijing Institute of Aerospace Control Devices Beijing100094 China

ISBN: (数字)9781665497589

ISBN: (纸本)9781665497589

As the basis of three-dimensional (3D) integration for scaling in the field of MEMS/NEMS, wide through-silicon via can transform planar interconnections into vertical ones, realizing higher interconnection density, shorter line size, and shorter signal delay, together with a much smaller device size and higher integration density. In this paper, a comprehensive modular manufacturing strategy for 3D MEMS/NEMS wTSVs with aspect ratio up to 11, consisting of 3 etching and 2 filling designs and process innovation, meeting all the above requirements, together with extra advantages such as high processability and integrability, is proposed. An organic liner layer process can be applied to low-temperature bio-chips, inorganic liner process will be essential for high reliability and high load 3D power devices. The filling quality of two processes are further analyzed, exhibiting a low leakage current of 20 pA under 30V bias and a low parasitic capacitance lower than 100 fF, paving a clear pathway for the next-generation 3D MEMS/NEMS integrated system. © 2022 IEEE.

关键词： Aspect ratio

来源：评论

学校读者我要写书评

暂无评论

Low Pressure Chemical Vapor Deposited Perovskite Enables all Vacuum-Processed Monolithic Perovskite-Silicon Tandem Solar Cells

引用

advanced Energy materials 2025年

作者： Zhang, Yuxi Zhu, Yanqing Sun, Jingsong Hu, Min Chen, Jiahui Duan, Bingxin Hu, Shenghan Hou, Peiran Tan, Wen Liang Ku, Zhiliang Yang, Weiguang Lu, Jianfeng State Key Laboratory of Silicate Materials for Architectures Wuhan University of Technology Wuhan430070 China Zhejiang Baima Lake Laboratory Co. Ltd. Zhejiang Hangzhou310000 China School of Electronic and Electrical Engineering Hubei Province Engineering Research Center for Intelligent Micro-Nano Medical Equipment and Key Technologies Wuhan Textile University Wuhan430200 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China ClaytonVIC3168 Australia Solar Technology Co. Ltd. Jiangsu Taizhou225500 China

Low-pressure chemical vapor deposition (CVD) is a promising technique for metal halide perovskite photovoltaics fabrication due to its low manufacturing cost, conformal coverage, and high scalability for industry-scale fabrication. However, the lack of knowledge of the reaction kinetics makes the solar cell performance lag behind its solution-processed counterpart. Herein, the perovskite formation and crystal growth process in the CVD process are studied by unraveling the mechanism of ion diffusion via tracking the vapor–solid reaction with various semi-in-situ characterizations. It is found that Cs+ can migrate along the perovskite lattice and uniformly distribute in the vertical direction of the final perovskite film even changing the deposition order of CsBr and PbI2 in the solid source, whereas this order can significantly affect the growth kinetics and the bandgap of the perovskite. Depositing CsBr before PbI2 results in a faster conversion of inorganic precursors to perovskite phase, yielding a wider bandgap perovskite. Finally, we fabricated semi-transparent perovskite cells using all-vapor deposition process, which showed a champion efficiency of 18.7% and it retained ≈94% of its initial performance after 200 h of continuous operation. Moreover, using this all-vapor deposition process, we achieved a champion efficiency of 26.9% for monolithic perovskite-silicon tandem solar cells. © 2025 Wiley-VCH GmbH.

关键词： Low pressure chemical vapor deposition

来源：评论

学校读者我要写书评

暂无评论

Zearalenone Degrading Enzyme Evolution to Increase the Hydrolysis Efficiency Under Acidic Condition by the Rational Design

SSRN

引用

SSRN 2024年

作者： Xing, Xingyue Chen, Xiaowei You, Xihuo Huang, Jie Xue, Dongsheng National "111" Center for Cellular Regulation and Molecular Pharmaceutics Cooperative Innovation Center of Industrial Fermentation Ministry of Education Key Laboratory of Fermentation Engineering Hubei University of Technology Hubei Province Wuhan430068 China School of Bioengineering and Health State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan430200 China Co. Ltd Qichun 435300 China

Based on the rational design, zearalenone degrading enzyme was evolved to improve the hydrolysis efficiency under acidic condition. At pH 4.2 and 37 °C, the activity of the evolved zearalenone degrading enzyme with 8 mutation sites increased to 38.67 U/mg from the original l7.69 U/mg. Km of the evolved zearalenone degrading enzyme decreased to 75.33 µM from the original 283.61 µM. Hydrolysis efficiency of the evolved zearalenone degrading enzyme increased to 3.86 folds under imitated pig stomach condition. Molecular docking showed that the number of hydrogen bonds and pi-sigma interactions between the evolved zearalenone degrading enzyme and zearalenone increased. The evolved zearalenone degrading enzyme was valuable for hydrolyzing zearalenone under acidic condition. © 2024, The Authors. All rights reserved.

关键词： Hydrolysis

来源：评论

学校读者我要写书评

暂无评论

Low-voltage Injection-free Electroluminescence Device based on a Monolayer MoSe2/WSe2 Lateral Heterostructure

Low-voltage Injection-free Electroluminescence Device based ...

引用

CLEO: Science and Innovations in CLEO 2024, CLEO: S and I 2024 - Part of Conference on Lasers and Electro-Optics

作者： Zhong, Yutong Ma, Hanyuan Lv, Qian Li, Yongzhuo Feng, Jiabin Li, Chen Xu, Jialu Yu, Chenxin Lv, Ruitao Ning, Cun-Zheng Department of Electronic Engineering Tsinghua University Beijing100084 China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and Engineering Tsinghua University Beijing100084 China School of Materials Science and Engineering Nanyang Technological University Singapore639798 Singapore College of Integrated Circuits and Optoelectronic Chips Shenzhen Technology University Guangdong Shenzhen518118 China

We demonstrate an injection-free electroluminescence device fabricated with a CVD-grown monolayer MoSe2/WSe2 lateral heterostructure. The device is based on impact generation of excitons through an alternating voltage...

关键词：

来源：评论

学校读者我要写书评

暂无评论

Multifunctional and Sprayable 2D MoS_(2)/Silk Sericin Bio‑Nanocomposite Dressings with Enhanced Photothermal Effect for Infected Wound Healing

引用

advanced Fiber materials 2024年第4期6卷 1074-1091页

作者： Libin Qiu Lian Duan Hongyu Lin Min Wang Huaping Liang Guilong Peng Xiao Yang Yang Si Shixiong Yi State Key Laboratory of Resource Insects College of SericultureTextile and Biomass SciencesSouthwest UniversityChongqing 400715People’s Republic of China Institute for Clean Energy and Advanced Materials School of Materials and EnergySouthwest UniversityChongqing 400715People’s Republic of China State Key Laboratory of Trauma Burns and Combined InjuryResearch Institute of SurgeryDaping HospitalThird Military Medical UniversityChongqing 400042People’s Republic of China Innovation Center for Textile Science and Technology Donghua UniversityShanghai 200051People’s Republic of China

Developing novel antibacterial dressing protecting skin injuries from infection is essential for wound *** this study,sericin,a bio-waste produced during the degumming of silk cocoons,is utilized to exfoliate MoS_(2)layers and improve the dispersity and stability of MoS_(2)nanosheets(MoS_(2)-NSs).Moreover,owing to its ability to promote oxygen permeability and cell growth and its good biocompatibility,MoS_(2)-NS/Sericin maintains its photothermal property under an 808 nm light source for a strong antibacterial activity as well as improves the fibroblast migration,which accelerates wound ***-thermore,the in vitro experiments indicates that MoS_(2)-NS/Sericin can also scavenge reactive oxygen species(ROS)at an inflammatory stage of wound healing and transform classical activated macrophages(M1-type)into alternatively activated macrophages(M2-type),which is beneficial for wound *** on these results observed in vitro,full-thickness skin wound experiments are conducted on rats,and the corresponding results show that MoS_(2)/Sericin under 808 nm irradiation exhibits the best performance in promoting wound ***,MoS_(2)-NS/Sericin exhibits a high potential for bacteria-infected wound healing.

关键词： MoS_(2) Sericin Photothermal therapy Antibacterial Infected wound healing

来源：评论

学校读者我要写书评

暂无评论

Low-voltage Injection-free Electroluminescence Device based on a Monolayer MoSe2/WSe2 Lateral Heterostructure

Low-voltage Injection-free Electroluminescence Device based ...

引用

2024 Conference on Lasers and Electro-Optics, CLEO 2024

ISBN: (纸本)9781957171395

关键词： Heterojunctions

来源：评论

学校读者我要写书评

暂无评论

Two-Dimensional Heterostructure Nifep@Feooh Nanosheets Supported by Nickel Foam as High-Performance Oer Electrocatalyst

SSRN

引用

SSRN 2023年

作者： Jiang, Zhigang Chen, Mengtian Hou, Qinglong Wang, Chen Yang, Shuhan Liu, Haizhen Zhu, Lei Wang, Kuikui Xing, Bo Institute of Materials for Energy and Environment Laboratory of New Fiber Materials and Modern Textile Growing Basis for State Key Laboratory College of Materials Science and Engineering Qingdao University Shandong Qingdao266071 China MOE Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials Guangxi University Guangxi Nanning530004 China National Engineering Laboratory of Circular Economy Sichuan University of Science and Engineering Sichuan Zigong643000 China Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology Changzhou University Jiangsu Changzhou213164 China Sichuan University China

Constructing heterostructure and introducing multiple active sites are efficient strategies to develop high-performance electrocatalysts. Herein, two-dimensional heterostructure NiFeP@FeOOH nanosheets supported by nickel foam are equipped by hydrothermal-phosphorization-electrodeposition process. The synthesis of self-supporting heterostructure NiFeP@FeOOH nanosheets on the NF improved the electron transfer rate, increased the specific surface region, and boosted the rate at which produced bubbles were released from the electrode. Additionally, the incorporation of FeOOH into NiFeP nanosheets provided sufficient active sites for the reaction, endowing the strong electron interaction between the components, favor the form of intermediates containing oxygen (hydroxyl oxides), and promote water splitting. In situ Raman spectroscopy showed that the excellent OER performance was due to the reconstruction-induced hydroxyl oxide, which achieved a multi-active site *** NiFeP@FeOOH/NF electrocatalytic activity is significantly improved. The findings indicate that in 1.0 M KOH alkaline solution, NiFeP@FeOOH/NF showed an OER overpotential of 235 mV at 100 mA cm-2, a Tafel slope of 46.46 mV dec-1 and worked stably at 50 mA cm-2 for 80 h. This research proves the importance of constructing heterostructure and introducing FeOOH are of great significance to the study of the properties of OER electrocatalysts. © 2023, The Authors. All rights reserved.

关键词： Nanosheets

来源：评论

学校读者我要写书评

暂无评论

高熵合金在水电解中的研究进展、基础与挑战

引用

Science China materials 2023年第5期66卷 1681-1701页

作者：张泉廉康齐高璨张书胜刘倩罗扬罗俊刘熙俊 Institute for New Energy Materials&Low-Carbon Technologies School of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China MOE Key Laboratory of New Processing Technology for Non-Ferrous Metals and Materials and Guangxi Key Laboratory of Processing for Non-Ferrous Metals and Featured MaterialsSchool of ResourceEnvironments and MaterialsGuangxi UniversityNanning 530004China School of Materials Science and Engineering Tianjin University of TechnologyTianjin 300384China College of Chemistry Zhengzhou UniversityZhengzhou 450000China Institute for Advanced Study Chengdu UniversityChengdu 610106China Department of Materials ETH ZürichZürich 8093Switzerland Department of Physics City University of Hong KongHong Kong SAR 999077China ShenSi Lab Shenzhen Institute for Advanced StudyUniversity of Electronic Science and Technology of ChinaShenzhen 518110China

氢能作为一种清洁能源,已成为全球能源战略的重要组成部分,也是实现全球“碳中和”的必要途径之一.在可再生电力的驱动下,水电解法有望成为实现“零碳”排放的一种理想的长期制氢方法.与传统合金相比,高熵合金由于其独特的结构特征,包... 详细信息

氢能作为一种清洁能源,已成为全球能源战略的重要组成部分,也是实现全球“碳中和”的必要途径之一.在可再生电力的驱动下,水电解法有望成为实现“零碳”排放的一种理想的长期制氢方法.与传统合金相比,高熵合金由于其独特的结构特征,包括占位无序和晶格有序,可提供更多的催化活性位点.它们在水解催化剂领域具有广泛的应用前景.本文综述了电解水的机理、水解过程中高熵合金的催化原理,以及高熵合金作为电解水催化剂的最新研究进展.总结了新型高熵合金设计方面存在的难点及其应用潜力,重点讨论了高熵合金在水解催化过程中表面形态和催化活性之间的联系.最后归纳了高熵合金的组成调控及其在水电解等新兴领域的可能应用前景.

关键词： high-entropy alloys electrolytic water splitting catalysts design hydrogen evolution reaction oxygen evolution reaction

来源：评论

学校读者我要写书评

暂无评论

Simpler and Greener Preparation of An In-Situ Polymerized Polyimide Anode for Lithium Ion Batteries

SSRN

引用

SSRN 2023年

作者： Zhang, Qiuyitong Xu, Yuexin Lv, Ning Li, Hanyang Wei, Zijie Tiana, Tian Wang, Yadong Tang, Haolin State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu Hydrogen Valley Foshan528200 China

A simplified and greener procedure for in-situ obtaining polyimide anode materials for lithium-ion battery electrodes is developed. The combined polyimide material synthesis and electrode preparation reduces the number of processing steps and treatment duration and decreases the energy required for heat treatment, solvent evaporation, and organic solvent use. More importantly, polymerization in situ on the electrode surface render the polyimide particles a sea urchin-like structure, leading to fast electrochemical kinetics, and significant improvement in discharge capacity and cycling performance compared with materials obtained using traditional procedures. Specific capacities of 1870 mAh g-1 and 2277 mAh g-1 at 30℃ and 60℃, respectively, are obtained. A capacity of 1774 mAh g-1 is retained after 500 cycles at high current density of 1000 mA g-1 at 60℃. This new preparation process not only simplifies the preparation process and makes it greener, but also significantly improves the battery performance, providing new possibilities for the preparation of high-performance low-cost lithium-ion battery electrodes. © 2023, The Authors. All rights reserved.

关键词： Solvents

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：