检索结果-内蒙古大学图书馆

SSRN 2024年

作者： Zhang, Huixia Zhang, Fan Hao, Fuyao Sui, Yongqiang Li, Wenju Li, Xiangbo Hou, Jian Guo, Weimin State Key Laboratory for Marine Corrosion and Protection Qingdao Luoyang Ship Material Research Institute Qingdao China State Key Laboratory of Advanced Technology For Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China

The stress corrosion cracking (SCC) behaviors of Ti-6Al-3Nb-2Zr-1Mo (Ti6321, in wt.%) alloy samples with equiaxed microstructure (EM), bimodal microstructure (BM) and Widmanstätten microstructure (WM) in simulated 3000m deep sea environment were investigated using electrochemical tests, electron backscattered diffraction (EBSD), and so on. The results revealed that WM exhibits the best SCC resistance, which is attributed to its best self-healing ability, and is beneficial for the re-passivation of fresh metal at the crack tip. Besides, there is no obvious micro-texture region in WM, and α phase colonies hinder the dislocation movement, resulting in the lowest crack growth rate. © 2024, The Authors. All rights reserved.

关键词： Titanium alloys

来源：评论

学校读者我要写书评

暂无评论

Bioinspired cellulose-integrated MXene-based hydrogels for multifunctional sensing and electromagnetic interference shielding

引用

Interdisciplinary materials 2022年第4期1卷 495-506页

作者： Jingjiang Wei Chenglong Zhu Zhihui Zeng Fei Pan Fuqiang Wan Liwen Lei Gustav Nyström Zhengyi Fu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhanHubeiPR China Laboratory for Cellulose and Wood Materials Swiss Federal Laboratories for Materials Science and Technology(Empa)DübendorfSwitzerland Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials School of Material Science and EngineeringShandong UniversityJinanShandongPR China Laboratory for Biointerfaces Swiss Federal Laboratories for Materials Science and Technology(Empa)St.GallenSwitzerland Department of Health Science and Technology ETH ZürichZürichSwitzerland

Bioinspired hydrogels are complex materials with distinctive properties comparable to biological *** exceptional sensitivity to various external stimuli leads to substantial application potential in wearable smart ***,these multifaceted hydrogels are often challenging to be combined with pattern customization,stimulus responsiveness,self-healing,and ***,inspired by mussel secretions,a printable,self-healing,and biocompatible MXene-based composite hydrogel was designed and prepared by incorporating Ti3C2Tx MXene nanosheets into the hydrogel framework through the chelation of calcium ions(Ca2+)with polyacrylic acid and cellulose nanofibers at alkaline *** biocompatible conductive hydrogel exhibited sensitivity(gauge factor of 2.16),self-healing(within 1 s),recognition,and adhesion,distinguishing it as an ideal candidate for wearable multifunctional sensors toward strain sensing,vocal sensing,signature detection,and Morse code ***,the multifunctional hydrogel manifested efficient electromagnetic interference shielding properties(reaching more than 30 dB at a thickness of 2.0 mm),protecting electronics and humans from electromagnetic radiation and ***,the presented work represents a versatile strategy for developing environmentally friendly conductive hydrogels,demonstrating the perspectives of intelligent hydrogels for multifunctional applications.

关键词： cellulose nanofiber electromagnetic interference shielding hydrogel MXene sensor

来源：评论

学校读者我要写书评

暂无评论

Ultrafine Grain Tungsten Heavy Alloys with Excellent Performance Prepared by Spark Plasma Sintering

引用

Journal of Wuhan University of technology(materials Science) 2020年第2期35卷 393-398页

作者： ZHANG Jingang WANG Weimin JI Wei HE Qianglong WANG Aiyang TAN Lin YANG Kai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Institute of Material Science and EngineeringWuhan University of TechnologyWuhan 430070China

Ultrafine grain tungsten heavy alloys (WHAs) were successfully produced from the nano-crystalline powders using spark plasma *** present study mainly discussed the effects of sintering temperature on the density,microstructure and mechanical properties of the *** relative density of 98.12% was obtained at 1 050 ℃,and the tungsten grain size is about 871 *** 1 000 ℃-1 200 ℃,the mechanical properties of the alloys tend to first rise and then goes *** SPS,the alloy exhibits improved hardness (84.3 HRA at 1 050 ℃) and bending strength (987.16 MPa at 1 100 ℃),due to the ultrafine-grained *** fracture mode after bending tests is mainly characterized as intergranular or intragranular fracture of W grains,interfacial debonding of W grains-binding phase and ductile tearing of binding *** EDS analysis reveals a certain proportion of solid solution between W and Ni-Fe binding *** good mechanical properties of the alloys can be attributed to grain refinement and solid solution strengthening.

关键词： tungsten heavy alloys ultrafine grain nano-crystalline powders solid solution strengthening spark plasma sintering

来源：评论

学校读者我要写书评

暂无评论

Acid-catalyzed chemodivergent reactions of 2,2-dimethoxyacetaldehyde and anilines

引用

Chinese Chemical Letters 2021年第4期32卷 1419-1422页

作者： Luxia Guo Zihao Chen Hongmei Zhu Minghao Li Yanlong Gu Huazhong University of Science and Technology Hubei Key Laboratory of Material Chemistry and Service FailureWuhan 430074China State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical PhysicsLanzhou 730000China The Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan Shihezi UniversityShihezi 832004China

Chemodivergent reactions of 2,2-dimethoxyacetaldehyde and anilines were described,which were established on the basis of either a C—C bond cleavage or a rearrangement process of a reaction inte *** reactions proceeded in a condition-determined manner with good functional group *** the first model,2,2-dimethoxyacetaldehyde reacted with aniline to form a new C—N bond,in the presence of O_(2),via a C—C bond cleavage ***,in the second model,by performing the reaction in the absence of O_(2),Heyns rearrangement occurred and generated a new C—O bond to form methyl *** condition-determined reactions not only offered the new way for valueadded conversion of biomass-derived platform molecule,2,2-dimethoxyacetaldehyde,but also provided efficient methods for the synthesis of N-arylformamides and methyl phenylglycinates.

关键词： Condition-determined reaction Chemodivergent reaction 2 2-Dimethoxyacetaldehyde C-C bond cleavage Heyns rearrangement

来源：评论

学校读者我要写书评

暂无评论

Effects of TMAH dispersant on rheological behavior of Nd: YAG slurries and optical properties of transparent ceramics 17

Effects of TMAH dispersant on rheological behavior of Nd: YA...

引用

17th National Conference on Laser technology and Optoelectronics

作者： Luo, Peng Guo, Ruisong Xin, Yu Wang, Yaozhi Zhao, Wenhai Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education School of Materials Science and Engineering Tianjin University Tianjin300350 China The State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430079 China School of Material Science and Engineering Shanghai University Shanghai200444 China

ISBN: (纸本)9781510661097

In this study, transparent Nd: YAG ceramic was fabricated by gel casting of iso bam system using a dispersant composed of tetramethylammonium hydroxide (TMAH) to modify the rheological properties of slurry. The effects of dispersant content on the dispersibility and viscosity of slurry were studied, as well as the microstructure and light transmittance of the obtained transparent ceramics were also analyzed through the introduction of 0 − 1.5 wt.% TMAH. The results showed that the dispersion mechanism of TMAH is mainly to control the electrostatic property and the alkaline Zeta potential value of the slurry. The electrostatic repulsion of ceramic particles in the slurry could be effectively increased through the dispersing action of the additive, thereby reducing the viscosity of the slurry and improving the fluidity of the slurries. Under the TMAH content of 1 wt.%, a high-fluidity and good dispersion of Nd: YAG slurry with a solid load of 78.8 wt.% was obtained. A low viscosity of 72.89 mPa·s was achieved under shearing of 100 s-1, and a dense uniform body was obtained by self-gelling reaction. Highly transparent Nd: YAG ceramics were obtained after vacuum reaction sintering at 1780°C for 10 h, with a transmittance of 75.12% at 1064 nm. In all, the TMAH dispersant could effectively improve the molding properties of PIBM single system gel injection molding transparent ceramics. © 2022 SPIE.

关键词： Optical properties

来源：评论

学校读者我要写书评

暂无评论

The effect of hierarchical single-crystal ZSM-5 zeolites with different Si/Al ratios on its pore structure and catalytic performance

引用

Frontiers of Chemical Science and Engineering 2021年第2期15卷 269-278页

作者： Yuexin Hou Xiaoyun Li Minghui Sun Chaofan Li Syed ul Hasnain Bakhtiar Kunhao Lei Shen Yu Zhao Wang Zhiyi Hu Lihua Chen Bao-Lian Su Laboratory of Living Materials at the State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China State Key Laboratory of Silicate Material for Architectures Wuhan University of TechnologyWuhan 430070China Laboratory of Inorganic Materials Chemistry(CMI) University of NamurB-5000 NamurBelgium Nanostructure Research Centre(NRC) Wuhan University of TechnologyWuhan 430070China Clare Hall University of CambridgeCambridgeCB39ALUK

Hierarchical single-crystal ZSM-5 zeolites with different Si/Al ratios(Hier-ZSM-5-x,where x=50,100,150 and 200)were synthesized using an ordered mesoporous carbon-silica composite as hard ***-ZSM-5-x exhibits improved mass transport properties,excellent mechanical and hydrothermal stability,and higher catalytic activity than commercial bulk zeolites in the benzyl alcohol self-etherification *** show that a decrease in the Si/Al ratio in hierarchical single-crystal ZSM-5 zeolites leads to a significant increase in the acidity and the density of micropores,which increases the final catalytic *** effect of porous hierarchy on the diffusion of active sites and the final catalytic activity was also studied by comparing the catalytic conversion after selectively designed poisoned acid *** poisoned Hier-ZSM-5-x shows much higher catalytic conversion than the poisoned commercial ZSM-5 zeolite,which indicates that the numerous intracrystalline mesopores significantly reduce the diffusion path of the reactant,leading to the faster diffusion inside the zeolite to contact with the acid sites in the micropores predominating in ZSM-5 *** study can be extended to develop a series of hierarchical single-crystal zeolites with expected catalytic performance.

关键词： hierarchical zeolites single crystalline interconnected pores improved diffusion performance benzyl alcohol self-etherification reaction

来源：评论

学校读者我要写书评

暂无评论

Unveiling a giant electrocaloric effect at low electric fields through continuous phase transition design

Advanced Powder Materials

引用

Advanced Powder materials 2024年第5期3卷 33-45页

作者： Yunyao Huang Leiyang Zhang Pingji Ge Ruiyi Jing Wenjing Shi Chao Li Xiang Niu Vladimir Shur Haibo Zhang Shengguo Lu Yintang Yang Dawei Wang Xiaoqin Ke Li Jin Electronic Materials Research Laboratory Key Laboratory of the Ministry of EducationSchool of Electronic Science and EngineeringFaculty of Electronic and Information EngineeringXi’an Jiaotong UniversityXi’an710049China School of Physics MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed MatterXi’an Jiaotong UniversityXi’an710049China Instrument Analysis Center Xi’an Jiaotong UniversityXi’an10049China Guangdong Provincial Research Center on Smart Materials and Energy Conversion Devices School of Materials and EnergyGuangdong University of TechnologyGuangzhou510006China School of Natural Sciences and Mathematics Ural Federal UniversityEkaterinburg20000Russia School of Materials Science and Engineering State Key Laboratory of Material Processing and Die&Mould TechnologyHuazhong University of Science and TechnologyWuhan430074China School of Microelectronics Xidian UniversityXi’an710071China Functional Materials and Acousto-Optic Instruments Institute School of Instrumentation Science and EngineeringHarbin Institute of TechnologyHarbin150080China

The reported electrocaloric(EC)effect in ferroelectrics is poised for application in the next generation of solidstate refrigeration technology,exhibiting substantial developmental *** study introduces a novel and efficient EC effect strategy in(1-x)Pb(Lu_(1/2)Nb_(1/2))O_(3)-xPbTiO_(3)(PLN-xPT)ceramics for low electric-fielddriven ***-field simulations provide fundamental insights into thermally induced continuous phase transitions,guiding subsequent experimental investigations.A comprehensive composition/temperature-driven phase evolution diagram is constructed,elucidating the sequential transformation from ferroelectric(FE)to antiferroelectric(AFE)and finally to paraelectric(PE)phases for x=0.10-0.18 *** measurements of EC performance highlight x=0.16 as an outstanding performer,exhibiting remarkable properties,including an adiabatic temperature change(ΔT)of 3.03 K,EC strength(ΔT/ΔE)of 0.08 K cm kV-1,and a temperature span(Tspan)of 31℃.The superior EC effect performance is attributed to the temperature-induced FE to AFE transition at low electric fields and diffusion phase transition behavior contributing to the wide *** work provides valuable insights into developing high-performance EC effect across broad temperature ranges through the strategic design of continuous phase transitions,offering a simplified and economical approach for advancing ecofriendly and efficient solid-state cooling technologies.

关键词： PbPb(Lu_(1/2)Nb_(1/2))O_(3)-xPbTiO_(3)(PLN-PT) Electrocaloric effect(ECE) Phase transition Low electric field Antiferroelectric

来源：评论

学校读者我要写书评

暂无评论

Hetero-phase MoC-Mo_(2)C nanoparticles for enhanced photocatalytic H_(2)-production activity of TiO_(2)

引用

Nano Research 2021年第4期14卷 1095-1102页

作者： Jinfeng Liu Ping Wang Jiajie Fan Huogen Yu Jiaguo Yu School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China School of Chemistry Chemical Engineering and Life SciencesWuhan University of TechnologyWuhan 430070China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450002China State Key Laboratory of Advanced Technology for Material Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

Hexagonal molybdenum carbide(Mo_(2)C)as an effective non-noble cocatalyst is intensively researched in the photocatalytic H_(2)-evolution field owing to its Pt-like H^(+)-adsorption ability and good ***,hexagonal Mo_(2)C-modified photocatalysts possess a limited H_(2)-evolution rate because of the weak H-desorption *** improve the activity,cubic MoC was introduced into Mo_(2)C toform the carbon-modified MoC-Mo_(2)C nanoparticles(MoC-Mo_(2)C@C)by a calcination *** resultant MoC-Mo_(2)C@C(ca.5 nm)was eventually coupled with Ti0_(2)to acquire high-efficiency Ti0_(2)/MoC-Mo_(2)C@C by electrostatic *** highest H_(2)-generation rate of Ti0_(2)/MoC-Mo_(2)C@C reached of 918μmol·h^(-1)·g^(-1)which was 91.8,2.7,and 1.5 times than that of the Ti0_(2),TiO_(2)/MoC@C,and Ti0_(2)/Mo_(2)C@C,*** enhanced rate of Ti0_(2)attributes to the carbon layer as cocatalyst to transmit electrons and the hetero-phase MoC-Mo_(2)C as H_(2)-generation active sites to boost H_(2)-evolution *** research offers a novel insight to design photocatalytic materials for energy applications.

关键词： TiO_(2) MoC-MO_(2)C@C cocatalyst H_(2)evolution photocatalysis

来源：评论

学校读者我要写书评

暂无评论

Structure and enhanced dielectric temperature stability of BaTiO3- based ceramics by Ca ion B site-doping

引用

Journal of Materiomics 2021年第2期7卷 295-301页

作者： Xuewen Jiang Hua Hao Yang Yang Enhao Zhou Shujun Zhang Ping Wei Minghe Cao Zhonghua Yao Hanxing Liu Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu Hydrogen ValleyFoshan528200China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and EngineeringWuhan University of TechnologyWuhan430070China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Material Science and EngineeringWuhan University of TechnologyWuhan430070China Institute for Superconducting and Electronic Materials Australian Institute of Innovative MaterialsUniversity of WollongongWollongongNSW2500Australia Nanostructure Research Centre Wuhan University of TechnologyWuhan430070China

Capacitor is an important part of many electronic devices,so the temperature stability as one key parameter of capacitor needs to be improved constantly for meeting the requirements of various application ***,combined with the X-ray diffraction(XRD),selected area electron diffraction(SAED)and Vienna Ab-initio Simulation Package(VASP)calculation,it was confirmed that Ca ion can substitute the Ti site in the BaTi1-xCaxO3-x[BTC100](0≤x≤0.05)ceramics synthesized by solid-phase method which greatly improved the low-temperature stability of dielectric ***,introducing Bi3þand Zn^(2+) into BTC4 to form(1-y)BaTi0.6Ca0.04O2.96-yBi(Zn_(0.5)Ti_(0.5))O_(3)[(1-y)BTC4-yBZT](0.1≤y≤0.2)ceramics can further improve the dielectric-temperature stability by means of diffused phase transition and core-shell *** importantly,the 0.85BTC4-0.15BZT ceramics with a pseudocubic perovskite structure possessed a temperature coefficient of capacitance at 25℃(TCC25℃)being less than±15%over a wide temperature range of 55℃-200℃and a temperate dielectric constant(ε=1060)and low dielectric loss(tanδ=1.5%),which measure up to the higher standard in the current capacitor industry such as X9R requirements.

关键词： BaTiO3 Ca substituted X9R capacitors Dielectric properties

来源：评论

学校读者我要写书评

暂无评论

Light tuning CO/H_(2)composition on Ag:Unraveling CO_(2)mass transfer and electron-phonon coupling in plasmon-enhanced electrocatalysis

引用

Nano Research 2025年第1期18卷 173-185页

作者： Rui Lin Dong Fan Luca MBerger Thomas Possmayer Yu Zhou Jiexin Zhu Xingbao Chen Wen Luo Lars Allmendinger Andreas Tittl Leonardo de Souza Menezes Guillaume Maurin Shihe Yang and Stefan AMaier Nanoinstitute Munich Faculty of PhysicsLudwig-Maximilians-Universität München80539 MunichGermany Institut Charles Gerhardt Montpellier UMR 5253 CNRS ENSCM UniversitéMontpellierPlace E.Bataillon34090 MontpellierFrance Guangdong Provincial Key Lab of Nano-Micro Material Research School of Advanced MaterialsPeking University Shenzhen Graduate SchoolShenzhen 518055China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Faculty of Chemistry and Pharmacy Ludwig-Maximilians-Universität München81377 MunichGermany Departamento de Física Universidade Federal de Pernambuco50670-901 Recife-PEBrazil School of Physics and Astronomy Monash University Clayton CampusMelbourneVictoria 3800Australia Department of Physics Imperial College LondonSW72AZ LondonUK

Plasmon-enhanced electrocatalysis(PEEC)is an emerging approach to mitigate CO_(2)*** mechanisms behind CO_(2)adsorption and reduction at the catalyst-electrolyte interface in PEEC still need to be further ***,we employ a well-defined Ag nanostructure to elucidate these pivotal *** shining light with wavelengths of 625,525,405 nm on Ag,an adjustable CO/H_(2)ratio from 35 to 1 can be *** reaction pathway changing under plasmonic excitation does not originate from the lowered CO_(2)mass transfer in the vicinity of Ag,as the electrochemical quartz crystal microbalance results unravel that a slightly elevated temperature in bulk electrolyte caused by light irradiation cannot weaken the CO_(2)adsorption at the Ag catalyst-electrolyte *** calculations reveal that optical excitation towards shorter wavelengths leads to a progressive lowered energy barrier for H_(2)formation together with an enhanced energy barrier for^(*)COOH *** thermodynamically suppressed,CO_(2)reduction can still be improved kinetically by optimizing the excitation wavelength and intensity,being accompanied with the enhanced *** absorption spectroscopy results further correlate the higher photocurrent with a prolonged electron-phonon coupling time,verifying that the improvement of CO_(2)reduction kinetics in PEEC can be realized by hot electron harnessing.

关键词： plasmonic catalysis photoelectrochemical CO_(2)reduction CO/H_(2)ratio hot electron generation electronphonon coupling thermal effect

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：