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arXiv 2025年

作者： Sha, Xuyang Zhang, Xuejin Liu, Hao Cao, Jin Chen, Ruohan Zhai, Jinfeng Shao, Dingfu Wu, Shiwei Xiao, Cong Yang, Shengyuan A. He, Pan Guo, Hangwen Shen, Jian State Key Laboratory of Surface Physics Institute for Nanoelectronic Devices and Quantum Computing Fudan University Shanghai200433 China Department of Physics Fudan University Shanghai200433 China Institute of Applied Physics and Materials Engineering Faculty of Science and Technology University of Macau China Key Laboratory of Materials Physics Institute of Solid State Physics HFIPS Chinese Academy of Sciences Hefei230031 China Fudan University Shanghai200433 China Shanghai Research Center for Quantum Sciences Shanghai201315 China Zhangjiang Fudan International Innovation Center Fudan University Shanghai201210 China Collaborative Innovation Center of Advanced Microstructures Nanjing210093 China

Nonlinear Hall effects have been observed in quantum materials where Berry curvature and its momentum-space derivatives, such as the Berry curvature dipole (BCD) and Berry curvature triple (BCT), play a central role. While inversion symmetry breaking is widely recognized as a key criterion, the impact of time-reversal symmetry breaking remains less explored. Here, we report an abrupt enhancement of nonlinear Hall conductivity in non-centrosymmetric SrRuO3 (111) thin films during the paramagnetic-to-ferromagnetic transition. Scaling analysis reveals a sign reversal of the skew scattering contribution upon time-reversal symmetry breaking, which we attribute to the sign reversal of BCT at the Fermi surface. Density functional theory (DFT) calculations support this interpretation, showing the spin-polarized band splitting shifts the Fermi level asymmetrically for different spin channels. Our findings establish SrRuO3 (111) thin films as a promising platform for exploring magnetically tunable nonlinear transport effects. Copyright © 2025, The Authors. All rights reserved.

关键词： Ferromagnetism

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Transition metal phosphides:A wonder catalyst for electrocatalytic hydrogen production

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Chinese Chemical Letters 2023年第9期34卷 25-33页

作者： Mingxuan Du Deng Li Shengzhong(Frank)Liu Junqing Yan Key Laboratory of Applied Surface and Colloid Chemistry Ministry of EducationShaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringShaanxi Normal UniversityXi’an 710119China

Hydrogen evolution from water electrolysis has become an important reaction for the green energy *** precious metals and their compounds are excellent catalysts for producing hydrogen;however,their high cost limits their large-scale practical ***,the development of affordable electrocatalysts to replace these precious metals is *** metal phosphides(TMPs)have shown remarkable performance for hydrogen evolution and garnered considerable interest in the field of *** on the detailed introduction of TMPs in previous studies,we have systematically summarized the preparation methods,improvement methods,and development opportunities of TMPs and proposed“stimulatory factors”as a fundamental factor affecting the performance of TMPs *** the core of this research,“stimulatory factors”can provide numerous solutions to improve the performance of TMP materials and provide a good starting point for TMP research.

关键词： Hydrogen evolution reaction Phosphating Doping Morphology Heterojunction Defects

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Ageing Hardening Mechanism and Corrosion Resistance in the Fe65Cr13Cu3(CoMnMoNiAlTi)19 Medium-Entropy Stainless Alloy

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Acta Metallurgica Sinica(English Letters) 2021年第11期34卷 1601-1608页

作者： Ben-Qi Xu Hui Zhang Dong Ma Qun-Shuang Ma Li-Zhai Pei Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials(Ministry of Education) Anhui University of Technology243002Ma'anshanChina School of Materials Science and Engineering Anhui University of TechnologyMa'anshan 243002China

The ageing hardening mechanism of a newly designed Fe65Cr13Cu3(CoMnMoNiAlTi)19 medium-entropy stainless alloy(ME-SA)with a simple bcc solid solution matrix was *** kind of ME-SA possessed a higher ageing hardness of approximately 584 HV and higher compressive stress and corrosion resistance than those of the conventional precipitation hardening stainless steel 17-4 PH(Cr17Ni4Cu4 Nb),which has comparable compressive *** well-dispersed B2-ordered phase in the cast state transformed to a D03 crystal structure with a higher ordering degree and reduced the precipitate size after ageing at 500℃,thus promoting a great ageing hardening effect.

关键词： Medium-entropy stainless alloy Ordered phase transition Aging hardening Corrosion resistance

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Self-corrosion, electrochemical and discharge behavior of commercial purity Al anode via Mn modification in Al-air battery

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Rare Metals 2021年第12期40卷 3501-3511页

作者： Guo-Sheng Peng Jun Huang Yi-Cheng Gu Guang-Sheng Song School of Materials Science and Engineering Anhui University of TechnologyMa’anshan 243002China Key Laboratory of Green Manufacturing and Surface Technology of Advanced Metal Materials Ministry of EducationAnhui University of TechnologyMa'anshan 243002China

The self-corrosion, electrochemical and discharge behavior of commercial purity Al anode via Mn modification in Al-air battery was studied by the hydrogen evolution, weight loss, electrical conductivity, electrochemical and discharge tests. Results show that the synergetic effects of the dissolved Mn and Mn-modifying Al_(3)Fe intermetallic decrease the weight loss and inhibit the hydrogen evolution of commercial purity Al in Na OH solution when minor Mn is introduced. However, more Mn addition leads to the formation of Al_6Mn intermetallic,which has little effect on the weight loss, but accelerates the hydrogen evolution. Mn introduction plays a positive role in activating Al anodes, resulting in a decrease in the anodic polarization and an increase in the discharge voltage. Among all the commercial purity Al-x Mn anodes, 0.1 wt% Mn addition exhibits the best discharge efficiency for Al-air battery.

关键词： Commercial purity Al Mn addition Corrosion Electrochemical activity Discharge behavior

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Dynamic boron-carbamate bonds cross-link polyurea elastomers with enhanced impact-resistant properties

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Progress in Organic Coatings 2025年 207卷

作者： Sibo Wang Rongrong Chen Peili Liu Jing Yu Qi Liu Jingyuan Liu Jiahui Zhu Jun Wang Key Laboratory of Superlight Materials and Surface Technology Ministry of Education College of Materials Science and Chemical Engineering Harbin Engineering University Harbin 150001 China Yangtze Delta Region Advanced Research Institute of Harbin Engineering University Nantong 226000 China

Polyurea is widely used in infrastructure protection because of its significant mechanical properties, excellent toughness, and rapid curing performance. However, developing a high-strength polyurea with a rapid impact response remains challenging. Here, dynamic boron-carbamate bonds are integrated with polyurea elastomers (B x PU) by cross-linking a mixture of diisocyanate and aniline-terminated polyether with boric acid to achieve enhanced mechanical strength and toughness. Polyurea elastomer (B 3 PU) exhibits superior mechanical performance, attributed to the synergistic effect of reversible boron-carbamate bonds and hydrogen bonds, with an ultimate strength of 53.8 MPa, a tensile strain of 738.8 %, and a toughness of 240.9 ± 26.4 MJ m −3 . Additionally, the experimental and simulation results demonstrate that the B x PU elastomers exhibit fast responsiveness, excellent impact resistance, and protective performance. Collectively, this study highlights a facile method for developing high-strength polyurea elastomers with enhanced impact resistance, providing a new choice for explosion protection and building longevity.

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Microstructure and Mechanical Properties of ZrC_(x)-NbC_(y)-Cu Composites by Reactive Infiltration at 1300℃

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Journal of Wuhan University of technology(Materials science) 2023年第1期38卷 52-58页

作者：王东 XU Kai WEI Boxin WANG Yujin Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials(Anhui University of Technology) Ministry of EducationMa’anshan 243002China School of Materials Science and Engineering Anhui University of TechnologyMa’anshan 243002China Institute for Advanced Ceramics School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin 150001China School of Materials Science and Engineering Harbin University of Science and TechnologyHarbin 150080China

ZrC_(x)-NbC_(y)-Cu composites were fabricated by pressure-less reactive infiltration of Zr-Cu binary melts into porous NbC preforms at 1300℃.The effect of Zr content in the infiltrator on microstructure of the as-synthesized composites was *** properties of the composites were reported.A partial displacement of Nb atoms in NbC by Zr atoms from Zr-Cu melt occurs during the reaction between Zr-Cu melt and porous NbC *** formation of a core-shell structure suggests the reaction is mainly a dissolutionprecipitation *** dissolves into Zr-Cu melt,from which the(Nb,Zr)C_(z)phase precipitates and *** increasing Zr content in the Zr-Cu infiltrator,the reaction is enhanced and the infiltration is easily ***_(x)-NbC_(y)-Cu composite is synthesized using Zr_(14)Cu_(51)*** flexural strength and fracture toughness of ZrC_(x)-NbC_(y)-Cu composite reach 637 MPa and 12.7 MPa·m^(1/2),*** the improved toughness is probably attributed to residual Cu phase and plate-like Nb_(x)C_(y)phases.

关键词： ZrC_(x)-NbC_(y)-Cu composite reactive melt infiltration microstructure mechanical properties

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CMAS-phobic and infiltration-inhibiting protective layer material for thermal barrier coatings

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Journal of advanced Ceramics 2024年第8期13卷 1254-1267页

作者： Shjun Meng Lei Guo Hongbo Guo Yuanpeng Wang Hongli Liu School of Materials Science and Engineering Tianjin UniversityTianjin 300072China Tianjin Key Laboratory of Advanced Joining Technology Key Lab of Advanced Ceramics and Machining Technology of Ministry of EducationTianjin300072China School of Materials Science and Engineering Beihang UniversityBeijing 100191China College of Aeronautical Engineering Civil Aviation University of ChinaTianjin 300300China

Calcium-magnesium-alumina-silicate(CMAS)corrosion has attracted special attention in the thermal barrier coating(TBC)*** high temperatures,when CMAS melts,it adheres to the coating surface and penetrates the interior,severely destroying the *** this study,a promising CMAS-phobic and infiltration-inhibiting material,GdPO4,on which molten CMAs is difficult to wet and penetrate,was *** desirable attributes are explained by analyzing the material characteristics of GdPO_(4) and its interfacial reaction with ***4 is demonstrated to have low surface energy,making it difficult for molten CMAS to wet and adhere to the *** in contact with molten CMAS,a double-layer structured reaction layer consisting of an acicular upper sublayer and a compact lower sublayer is formed on the GdPO4 surface,which can effectively impede molten CMAS spreading and ***-principles calculation results revealed that the reaction layer has low surface energy and low adhesion to CMAS,which are favorable for molten CMAS ***,the formation of the reaction layer increases the viscosity of the molten CMAS,which can increase melt wetting and ***,GdPO4,which exhibits excellent CMAS-phobicity and infiltration-inhibiting ability,is a promising protective layer material for TBCs against CMAS adhesion and attack.

关键词： thermal barrier coatings(TBCs) calcium-magnesium-alumina-silicate(CMAS)-phobicity GdPO_(4) interface reaction layer first-principles calculation

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Dolphins-inspired antifouling self-healing hydrophilic coatings with hierarchical hydrogen bonds for enhanced durability in antifouling performance based on dynamic poly(urethane-urea)

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Chemical engineering Journal 2025年 515卷

作者： Yu Guan Rongrong Chen Jiahui Zhu Gaohui Sun Qi Liu Jingyuan Liu Jing Yu Zailin Yang Jun Wang Key Laboratory of Advanced Material of Ship and Mechanics Ministry of Industry and Information Technology College of Aerospace and Civil Engineering Harbin Engineering University Harbin 150001 China Key Laboratory of Superlight Materials and Surface Technology Ministry of Education College of Materials Science and Chemical Engineering Harbin Engineering University Harbin 150001 China Nanhai Institute of Harbin Engineering University Hainan 572024 China

Hydrophilic coatings are widely used in marine antifouling. Nevertheless, there are additional requirements for the robustness of marine antifouling coatings, including the ability to withstand scratches and damage. Therefore, the demand for self-healing properties and robust mechanical strength is high, presenting significant challenges. Herein, inspired by the elastic surface and exceptional water absorption capabilities of dolphins, a reversible interlocking polymer network with multiple hydrogen bonds was successfully developed. This innovation harnesses the properties of poly(urethane-urea) and ureido pyrimidinone, thereby enhancing both mechanical properties and antifouling performance. Furthermore, the modified 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide was incorporated into the system as a functional filler and to serve as crosslinking points, creating a multifunctional coating. Owing to the hierarchical hydrogen bonds (the hydrogen-bonded carbonyl groups in SPPU-01 reach as high as 56.80 %), SPPU-01 exhibits exceptional strength of 17.35 MPa (1132.17 %), remarkable toughness of 89.33 MJ/m 3 , and superior tear strength of 74.97 KN/m. Upon incorporating additional components, the composite crosslinking network enhances hydrophilicity (∼29.15°), thereby forming a hydration layer that effectively prevents fouling. The SPPU-02 reveals outstanding resistance to marine bacteria, effective anti-diatom adhesion, robust anti-mussel attachment, and strong anti-pseudo-barnacle properties, achieving 96.5 %, 94.5 %, 96.04 %, and 1.31 MPa, respectively. Furthermore, this strategy, which mimics dolphin functions, is well-suited for various marine materials with different requirements. It exhibits deicing (21.22 kPa), drag reduction, and high-temperature resistance properties (69.1 %), opening new avenues for the development of antifouling coatings with both strong and superior comprehensive performance.

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Simultaneously improving mechanical and anti-corrosion properties of extruded Mg-Al dilute alloy via trace Er addition

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Journal of Materials science & technology 2023年第19期150卷 49-64页

作者： Zhi Zhang Jinshu Xie Jinghuai Zhang Hao Dong Shujuan Liu Xiaobo Zhang Jun Wang Ruizhi Wu Key Laboratory of Superlight Material and Surface Technology Ministry of EducationCollege of Materials Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology Nanjing Institute of TechnologyNanjing 211167China Ningbo Branch Ordnance Science Institute of ChinaNingbo 315103China

Simultaneously improving the mechanical properties and corrosion resistance of magnesium(Mg)alloys is a long-standing challenge to be solved in their engineering *** this work,we find that trace Er addition can improve the mechanical and anti-corrosion properties of Mg-1.4Al-0.4Mn-0.4Ca-0.3Er(wt%,AMXE)dilute alloy synergistically,especially reducing the corrosion rate(0.75 mm y-1)by one order of magnitude compared with the reference Mg-1.4Al-0.4Mn-0.4Ca(AMX)alloy and making it comparable to that of high-purity *** trace Er reduces the dynamic recrystallization degree and increases the strengthening phase particles,which is mainly responsible for the increase of yield strength by 42 *** addition of Er promotes the formation of much less noble Al8Mn4Er with effective Fe trapping ability and induces dislocation segregation,thus dramatically reducing micro-galvanic corrosion ***,Er addition promotes the formation of a more passivation and dense corrosion *** two factors together lead to the extremely low corrosion rate of AMXE *** findings are expected to promote the development of low alloyed high performance Mg alloys.

关键词： Magnesium alloy Mechanics-corrosion synergy Rare earth element SKPFM

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Facet specific electron conduction in pentavalent (W5+) WO3 drives superior photocatalytic CO2 reduction in (002) plane

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Separation and Purification technology 2025年 370卷

作者： Kamal, Muhammad Rizwan Rahman, Mohammad Z. Aligayev, Amil Liu, Min Zhong, Li Xia, Pengfei Li, Yueheng Ruan, Yue Xiang, Xia Ismail, Pir Muhammad Alam, Qaisar Ismail, Ahmed Zahid, Muhammad Wu, Xiaoqiang Alodhayb, Abdullah N. Huang, Qing Khan, Raj Wali Raziq, Fazal Ali, Sharafat Qiao, Liang School of Physics University of Electronic Science and Technology of China Chengdu610054 China Institute for Advanced Study Chengdu University Chengdu610106 China Science Island Branch of Graduate School University of Science and Technology of China Hefei230026 China NOMATEN Centre of Excellence National Centre for Nuclear Research Swierk/Otwock05-400 Poland SEU-FEI Nano-Pico Center Key Laboratory of MEMS of Ministry of Education Southeast University Nanjing210096 China University of Electronic Science and Technology of China Huzhou313001 China Energy Water and Environment Lab College of Humanities and Sciences Prince Sultan University Riyadh11586 Saudi Arabia School of Mechanical Engineering Chengdu University Chengdu610106 China Research Chair for Tribology Surface and Interface Sciences Department of Physics and Astronomy College of Science King Saud University Riyadh11451 Saudi Arabia National Water and Energy Center United Arab Emirates University Al Ain15551 United Arab Emirates

This article reports a concept of heat-induced topological modifications of non-layered WO3 followed by successful synthesis of oxygen-vacant more-porous nanosheets with exposed active (002) facet. Experimental measurements and Density Functional Theory (DFT) calculations have revealed that the photoexcited electrons are found to accumulate preferentially on (002) facet to yield enhanced electron conduction, and consequently, strengthen the reduction potential as active catalytic sites for photocatalytic CO2 reduction. Owing to these beneficial properties, the more-porous nanosheets of WO3 with (002) facet have exhibited superior performance than that of less-porous nanosheets of WO3 with (220) facet and bulk WO3 with (205) facet. This study therefore provides a new understanding of regulating physical, optical, and electronic properties through intricate atomic structure modulation of WO3, and may find widespread application in optoelectronics, sensors, and energy conversion. © 2025 Elsevier B.V.

关键词： Nanosheets

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