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An efficient CuZr-based metallic glasses electrode material for electrocatalytic degradation of azo dyes

Journal of Environmental Sciences 2024年第2期136卷 537-546页

作者： Zhiwang Deng Bowen Zhao Songtao Li Zhengkun Li Shiming Zhang Kewei Zhang zhengwang zhu Taiyuan University of Science and Technology School of materials science and engineeringTaiyuan 030024China Shi-changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Chinese Academy of Sciences Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Qingdao Yunlu Advanced Materials Technology Co. Ltd.Qingdao 266232China

Metallic glasses have received a lot of attention on wastewater treatment due to their unique atomic structure,and the use of metallic glasses as electrodes has produced unexpected electrocatalytic degradation effects for many pollutants through combining with electrochemical ***,it still is a formidable challenge to find a metallic glass electrode material with both efficient and clean for the catalytic degradation of *** this work,the Cu_(55)Zr_(45)metallic glassy ribbons are used as an electrode to degrade azo dyes and show the excellent degradation effect,which can reach 95.6%within 40 *** the degradation process,almost no additives are produced and Cu_(55)Zr_(45)metallic glassy ribbons have excellent effects under different pH ***,it exhibits good stability for degradation efficiency during the 8 cycle degradation tests of the amorphous alloy *** the copper nanoparticles are exposed on the surface of the ribbons,the oxidized copper obtained synergistically produce activated radicals is the primary degradation mechanism,where the auxiliary degradation mechanisms include electron transfer and the promotion of active *** research develops a new type of electrode material for wastewater treatment,and the economy and high efficiency of Cu55Zr45metallic glass endow it the expandable functional applications.

关键词： Metallic glasses Azo dyes Electrocatalytic Degradation Oxidized copper

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Microstructure and mechanical properties of lightweight Ti_(3)Zr_(1.5)NbVAl_(x)(x=0,0.25,0.5 and 0.75) refractory complex concentrated alloys

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Journal of Materials Science & Technology 2022年第35期130卷 64-74页

作者： Shuai Zeng Yongkang Zhou Huan Li Hongwei Zhang Haifeng Zhang zhengwang zhu Shi-changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China CAS Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China

Combining high strength and good ductility is an urgent requirement for traditional structural materials,but yet a *** emerging ductile Ti_(3)Zr_(1.5)VNbAl_(x)(x=0,0.25,0.5,0.75) refractory complex concentrated alloys(RCCAs) with high specific strength were designed and synthesized via vacuum *** effects of Al on microstructure and mechanical properties were systematically *** was found that the phase composition in this alloy system changes from the single disordered body-centered cubic(BCC) phase to a nano-scale mixture of co-continuous disordered BCC and ordered B2 phases with the increase of Al *** structure transition results in a remarkable increase in the yield strength of the RCCAs,i.e.,from 790 to 1118 MPa,leading to a superior specific yield strength of 199.4 MPa cm^(3)g^(-1)for the Al0.75 alloy,meanwhile,the tension plasticity maintained at~10%.TEM observation demonstrates that cell-forming structure and HDDWs induced by wave slip play a crucial role of considerable plasticity in Al0.25 alloy,whereas in Al0.5 alloy,microbands induced by planar slip dominant deformation *** current work is important not only for providing novel high strength and tough structural materials with low density,but also sheds light on designing highperformance lightweight alloys with tunable microstructure.

关键词： Refractory complex concentrated alloys Microstructure Mechanical properties Strengthening mechanisms Deformation behavior

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Atomic-scale Nb heterogeneity induced icosahedral short-range ordering in metallic glasses

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Journal of Materials Science & Technology 2022年第13期108卷 73-81页

作者： Yuhui zhu Weizhen Wang Yuanyuan Song Shiming Zhang Hong Li Aimin Wang Haifeng Zhang zhengwang zhu Shi-changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaHefei 230026China CAS Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Qingdao Yunlu Advanced Materials Technology Co. Ltd.Qingdao 266232China

The intrinsic origins and formation of atomic-scale structure in multicomponent alloys remain largely unknown owing to limited simulations and inaccessible ***,we report the formation of three-dimensional periodicity from a disordered atomic-scale structure to an imperfect/perfect ordered cluster and finally to long-range translational and rotational symmetry coupled with Nb *** atomic-scale structural clustering and atomic arrangements involving solvent or solute atoms simultaneously occurred during isothermal annealing.A close relationship between atomic-scale structural evolution and composition variation has important implications in depicting the chemical and topological packing during the early crystallization stage in metallic *** work can provide a comprehensive understanding of how short-range orders evolve into long-range periodicity and will further shed light on the origins and nature of metallic glasses.

关键词： Metallic glasses Isothermal annealing Atomic-scale Structural ordering Nb heterogeneity

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退火温度对Fe_(35)Ni_(30)Cr_(20)Al_(10)Nb_(5)高熵合金的组织结构和性能的影响

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材料研究学报 2024年第4期38卷 241-247页

作者：李云飞王金贺张龙李正坤付华萌朱正旺李宏王爱民张海峰中国科学院金属研究所、中国科学院核用材料与安全评价重点实验室沈阳110016 中国科学技术大学材料科学与工程学院沈阳110016 中国科学院金属研究所师昌绪先进材料创新中心沈阳110016

系统地研究了退火处理温度对低熔点高熵合金Fe_(35)Ni_(30)Cr_(20)Al_(10)Nb_(5)(摩尔比)的组织结构和性能的影响。结果表明:随着退火温度的提高,铸态Fe_(35)Ni_(30)Cr_(20)Al_(10)Nb_(5)合金中富Fe-Cr元素的fcc相的体积分数逐渐减少,Laves相和B2-NiAl相的体积分数逐渐增大。准静态压缩实验结果表明,铸态样品的压缩塑性变形能力良好。随着退火处理温度的提高合金的屈服强度先提高后降低,在700℃退火的样品其屈服强度最高(为1247.7 MPa),但是塑性变形量比铸态有所降低。压缩屈服强度随退火处理温度降低,可归因于基体fcc相在高温下的分解。电化学测试结果表明,这种合金的耐腐蚀能力随退火处理温度的提高而单调提高,在900℃退火的样品其腐蚀电位为-72.02 mV。

关键词：金属材料高熵合金退火处理力学性能耐腐蚀性能

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中药基于铁死亡机制防治肝癌研究进展

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陕西中医 2024年第2期45卷 282-285页

作者：郭桓博马瑞雪朱正望朱平生河南中医药大学河南郑州450046

肝癌是各种慢性肝脏疾病的终末阶段,在我国的发病率及病死率均较高。铁死亡是一种调节性细胞死亡(RCD)的现象,其机制与细胞内铁元素的代谢紊乱和过氧化物堆积有关。近年来对铁死亡相关通路的研究发现,铁死亡与肝癌的防治密切相关。中医... 详细信息

肝癌是各种慢性肝脏疾病的终末阶段,在我国的发病率及病死率均较高。铁死亡是一种调节性细胞死亡(RCD)的现象,其机制与细胞内铁元素的代谢紊乱和过氧化物堆积有关。近年来对铁死亡相关通路的研究发现,铁死亡与肝癌的防治密切相关。中医认为“肝藏血”,而铁死亡发生的过程与血细胞中的铁存在相关性,积极探索中药调控铁死亡的机制,挖掘并提取传统中药的活性成分,对中药的现代化发展颇有裨益。现通过简单阐述铁死亡发生的机制,对中药如何通过各种通路调节干预肝癌细胞的活性和增殖、诱导肝癌细胞铁死亡进行综述,以期为中药防治该疾病开辟新思路。

关键词：肝癌铁死亡氧化应激铁代谢肝藏血

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Co_(78)Si_(8)B_(14)metallic glass:A highly efficient and ultra-sustainable Fenton-like catalyst in degrading wastewater under universal pH conditions

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Journal of Materials Science & Technology 2022年第18期113卷 105-116页

作者： Xindong Qin Jiliang Xu zhengwang zhu Zhengkun Li Dawei Fang Huameng Fu Shiming Zhang Haifeng Zhang Institute of Rare and Scattered Elements College of ChemistryLiaoning UniversityShenyang 110036China Shi-Changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Qingdao Yunlu Advanced Materials Technology Co. Ltd.Qingdao 266232China

Overcoming the pH limitation and increasing the catalyst reusability remain pressing demands for metal-lic glass(MG)in wastewater ***,Co_(78)Si_(8)B_(14)MG ribbons are used to degrade dye wastew-ater by activating hydrogen peroxide(H_(2)O_(2))as Fenton-like *** Co-based MG catalysts exhibit high degradation efficiency under both acidic and alkaline conditions,and the kinetic reaction rate at pH 10(0.176 min^(−1)) and pH 4(0.089 min^(−1)) is 5.9 and 1.2 times higher than that of the extensively studied Fe-based MG catalysts,***,the Co-based MG catalysts can be reused up to 20-60 times at universal pH conditions,demonstrating fairly good *** newly discovered Co-based MG catalysts do not follow the classical Fenton reactions with H_(2)O^(2) the way Fe-based MGs *** an acid environment,hydroxyl radicals play a dominant role in the degradation,while in an alkaline environ-ment,the effect of hydroxyl radicals is weakened,and Co^(3+) ions exert a relatively major function on the *** excellent performance in catalytic activity and reusability at universal pH conditions of the Co-based MGs will inspire the development of MGs in wastewater treatment.

关键词： Metallic glass Wastewater degradation Catalytic applications

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Wettability and Interfacial Reactions Between Metallic Glass Melts and Cu/Mo Used as Roller Materials for Twin-Roll Casting

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Acta Metallurgica Sinica(English Letters) 2022年第7期35卷 1221-1230页

作者： Yi Wu Long Zhang Hongwei Zhang Huameng Fu zhengwang zhu Hong Li Aimin Wang Haifeng Zhang Shi-changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaHefei 230026China

Twin-roll casting has been recently revealed to be an effi cient technique to produce rejuvenated metallic glass(MG)*** to the high melting point and high hardness,pure Mo is considered as a good roller material as pure ***,the wettability and interfacial reactions between MG melts and Cu or Mo remain largely *** this work,a series of sessile droplet wetting experiments are designed to investigate the wettability and reactions between Zr_(41.2)Ti_(13.8)Cu_(12.5)Ni_(10)Be_(22.5)(Vit.1)or(Zr 0.401 Ti_(0.133)Cu_(0.118)Ni_(0.101)Be_(0.247))_(99)Nb_(1)(Nb1)MG melts and Cu/Mo substrates at temperatures of 1073,1123 and 1173 *** is found that the wettability and interfacial reactions of the Vit.1 and Nb1 MG melts on the Cu substrates are very *** equilibrium contact angles are~30°at 1073 K and~25°-27°at 1123 *** MG melts completely spread out on the Cu substrates at 1173 *** substrates are slightly dissolved in the MG melts event at 1073 K,and a transitional reaction layer exists between the droplet and the Cu *** comparison,the Vit.1 MG melt exhibits a much improved wettability on the Mo *** equilibrium contact angle of the Vit.1/Mo is only 6°at 1073 K and 5°at 1123 *** signifi cant diff usion of Mo into the droplet occurs even at 1173 K with a holding time of~30 *** interfaces of the Vit.1/Mo samples are sharp,and no interfacial reaction layers *** fi ndings indicate that pure Mo can be a good roller material for twin-roll casting at high temperatures,and the Mo-made rollers are expected of capability to produce MG strips with good quality.

关键词： Metallic glass Wettability Interfacial reaction Twin-roll casting Roller material

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Dual-phase synergistic deformation characteristics and strengthening mechanism of AlCoCrFeNi_(2.1) eutectic high entropy alloy fabricated by laser powder bed fusion

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Journal of Materials Science & Technology 2023年第19期150卷 75-85页

作者： Xu Tang Hao Zhang zhengwang zhu Peng Xue Lihui Wu Fengchao Liu Dingrui Ni Bolv Xiao Zongyi Ma Shi-changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China

Eutectic high entropy alloy(EHEA)possesses promising prospects for industrial application due to its controllable and near-equilibrium dual-phase *** to the advantages of high material utiliza-tion,efficient production,and design freedom,the laser powder bed fusion(LPBF)technique provides a new path to prepare EHEA components with complex structure and excellent *** this study,near fully dense AlCoCrFeNi_(2.1) samples were obtained by adjusting the process parameters of ***-sidering the balling phenomenon and powder splashing during the LPBF process,laser remelting was selected as an optimized scanning strategy to further improve the forming quality of *** microstructure of remelted AlCoCrFeNi_(2.1) sample exhibited regular eutectic lamellae consisting of nano-scale face-centered-cubic(FCC)and B2 phases,in which the FCC phase accounted for a higher *** investigating the tensile behavior and deformation mechanism,it was revealed that the ultrafine eu-tectic lamellae could induce a strong dual-phase synergistic strengthening,thereby significantly improv-ing the strength of the *** with the vacuum induction melted(VIM)sample,the remelted sample showed a 54%increase in ultimate tensile strength(UTS-1518 MPa)and a 130%increase in yield strength(YS-1235 MPa)with reasonable *** study indicates that by combining the design and manufacturing freedom of LPBF with the EHEA,it is expected to fabricate high-property 3D EHEA parts,expanding the application field of EHEA.

关键词： Laser powder bed fusion Remelting Eutectic high entropy alloy Microstructure Deformation mechanism

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冷轧、退火和时效对Fe_(50)Ni_(25)Cr_(15)Al_(10)高熵合金组织和性能的影响

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金属热处理 2024年第5期49卷 118-123页

作者：邢振强庞景宇张宏伟纪宇朱正旺张龙王爱民张海峰大连交通大学材料与工程学院辽宁大连116028 中国科学院金属研究所师昌绪先进材料创新中心辽宁沈阳110016 东北大学冶金学院辽宁沈阳110819

研究了冷轧、退火和时效对Fe_(50)Ni_(25)Cr_(15)Al_(10)高熵合金组织和力学性能的影响。结果表明,铸态Fe_(50)Ni_(25)Cr_(15)Al_(10)高熵合金为FCC+B2双相结构。冷轧、退火和时效后,FCC相由树枝晶转变为等轴晶,并产生占比约为43.7%的... 详细信息

研究了冷轧、退火和时效对Fe_(50)Ni_(25)Cr_(15)Al_(10)高熵合金组织和力学性能的影响。结果表明,铸态Fe_(50)Ni_(25)Cr_(15)Al_(10)高熵合金为FCC+B2双相结构。冷轧、退火和时效后,FCC相由树枝晶转变为等轴晶,并产生占比约为43.7%的退火孪晶,平均晶粒尺寸从228.84μm细化到4.51μm。B2相呈现出两种析出方式,分别是沿晶析出的链状大尺寸相和晶内弥散分布的小尺寸椭球形相,并且B2相占比从0.9%提升至13.3%。结构的调控使合金的屈服强度和抗拉强度分别由铸态的254 MPa和528 MPa提高到466 MPa和760 MPa,断裂总延伸率为31.5%,具有良好的强塑性匹配。

关键词：高熵合金冷轧热处理显微组织力学性能

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Short‑Term Splitting and Long‑Term Stability of Cuboidal Nanoparticles in Ni_(44)Co_(22)Cr_(22)Al_(6)Nb_(6) Multi‑Principal Element Alloy

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Acta Metallurgica Sinica(English Letters) 2023年第6期36卷 999-1006页

作者： Yitong Yang Jingyu Pang Hongwei Zhang Aimin Wang zhengwang zhu Hong Li Guangquan Tang Long Zhang Haifeng Zhang Shi‑Changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Material Science and Engineering University of Science and Technology of ChinaShenyang 110016China CAS Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Liaoning Zhongke Boyan Technology Co. Ltd.Fushun 113001China Foshan Huizhen Technology Co. Ltd.Foshan 528200China

Multi-principal element alloys(MPEAs)composed of thermally stable high-density cuboidal nanoparticles have revealed great potential for high-temperature *** this work,we systematically studied the growth behavior and coarsening kinetics of the cuboidal nanoparticles in Ni_(44)Co_(22)Cr_(22)Al_(6)Nb_(6) *** the initial stage of isothermal aging,the nanoparticles exhibit growth and split behavior,resulting in the improvement of mechanical performance,then the cuboidal nanoparticles retain superior thermal and mechanical stability during long-term isothermal *** 288 kJ/mol activation energy of Ni_(44)Co_(22)Cr_(22)Al_(6)Nb_(6) MPEA,which is higher than that in Ni-based superalloys,reveals the obvious elemental sluggish diffusion in Ni_(44)Co_(22)Cr_(22)Al_(6)Nb_(6) ***,coarsening rate constant determined by the volume diffusion mechanism in Ni_(44)Co_(22)Cr_(22)Al_(6)Nb_(6) MPEA is 1–2 orders of magnitude less than that of the traditional Ni-based *** shortterm regulation and long-term stability of the cuboidal nanoparticles endow the Ni_(44)Co_(22)Cr_(22)Al_(6)Nb_(6) MPEA with superior mechanical performance and thermal stability for high temperature applications.

关键词： Multi-principal element alloy L1_(2)nanoparticles Thermal stability Coarsening kinetics

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