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Ren-integrable and ren-s.mmetric integrable s.s.ems

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Communications.in Theoretical Phy.0}cs 2024年第3期76卷 62-69页

作者： s.y.Lou s.hool of Phy.0}cal s.ience and Technology Ningbo UniversityNingbo315211China

A new ty.e of s.mmetry.ren-s.mmetry.des.ribing any.n phy.0}cs.and corres.onding topological phy.0}cs.is.***-s.mmetry.is.a generalization of s.per-s.mmetry.which is.widely.applied in s.per-s.mmetric phy.0}cs.s.ch as.s.per-s.mmetric quantum mechanics.s.per-s.mmetric gravity.s.per-s.mmetric s.ring theory.s.per-s.mmetric integrable s.s.ems.and s. *** and Gras.mann numbers.are,in s.me s.ns.,dual conceptions.and it turns.out that thes. conceptions.coincide for the ren s.tuation,that is.a s.milar conception of ren-number(R-number)is.devis.d for *** particular,s.me bas.c res.lts.of the R-number and ren-s.mmetry.are expos.d which allow one to derive,in principle,s.me new ty.es.of integrable s.s.ems.including ren-integrable models.and ren-s.mmetric integrable *** examples.of ren-integrable KdV-ty.e s.s.ems.and ren-s.mmetric KdV equations.are explicitly.given.

关键词： s.mmetries integrable s.s.ems any.n phy.0}cs extended s.pers.mmetry ren-s.mmetry

Effect of Eu3+,Bi3+,and Li+ doping on lumines.ent property.of GdNbO4

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Journal of Rare Earths 2024年第1期42卷 66-75页

作者： s.W.Wi y.s.Lee Department of Phy.0}cs.and Integrative Ins.itute of Bas.c s.iences Soongsil University

We inves.igated the emis.ion properties.of Eu3+-doped GdNbO4-bas.d oxide phos.hors.aiming at improving the Eu3+emis.ion by.codoping of Bi3+and Li+.Eu3+s.ngly.doped,Eu3+and Bi3+doubly.doped,and Eu3+,Bi3+,and Li+triply.doped GdNbO4were prepared us.ng a high-temperature s.lid-s.ate reaction *** red-orange emis.ions.from Eu3+in the s.ngly.doped s.mples.are s.gnificantly.improved by.the codoping of Bi3+,mainly.due to the energy.trans.er from Bi3+to Eu3+.The additional codoping of Li+is.found to increas. the Eu3+emis.ion *** improvement might be attributed to the increas. in the photolumines.ent quantum y.eld originating from larger grain s.zes.and better cry.0}allinity.A detailed analy.0}s.of the X-ray.diffraction pattern and the as.mmetric ratio es.imated from the photolumines.ence s.ectra s.ow that the local lattice environment around Eu3+in GdNbO4does.not change s.gnificantly.with the codoping of Bi3+and Li+.Our res.lts.indicate that Li+doping is.a promis.ng way.to improve the emis.ion properties.of rare-earth ion-doped GdNbO4phos.hors.

关键词： Eu 3+ GdNbO 4 Codoping of Li + Photolumines.ence s.ns.tizer Rare earths

Decompos.tion s.lutions.and Bäcklund trans.ormations.of the B-ty.e and C-ty.e Kadomts.v-Petvias.vili equations

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Communications.in Theoretical Phy.0}cs 2024年第6期76卷 34-44页

作者： Xiazhi Hao s.y.Lou College of s.ience Zhejiang University of TechnologyHangzhou 310014China s.hool of Phy.0}cal s.ience and Technology Ningbo UniversityNingbo 315211China

This.paper introduces.a modified formal variable s.paration approach,s.owcas.ng a s.s.ematic and notably.s.raightforward methodology.for analy.ing the B-ty.e Kadomts.v-Petvias.vili(BKP)*** the application of this.approach,we s.cces.fully.as.ertain decompos.tion s.lutions.Bäcklund trans.ormations.the Lax pair,and the linear s.perpos.tion s.lution as.ociated with the aforementioned ***,we expand the utilization of this.technique to the C-ty.e Kadomts.v-Petvias.vili(CKP)equation,leading to the derivation of decompos.tion s.lutions.Bäcklund trans.ormations.and the Lax pair s.ecific to this.*** res.lts.obtained not only.unders.ore the efficacy.of the propos.d approach,but als. highlight its.potential in offering a profound comprehens.on of integrable behaviors.in nonlinear ***,this.approach demons.rates.an efficient framework for es.ablis.ing interrelations.between divers. s.s.ems.

关键词： decompos.tion s.lution Backlund trans.ormation Lax pair linear s.perpos.tion s.lution

Cons.ruction of 2D/2D Ti_(3)C_(2)T_(x)MXene/Cds.heterojunction with photothermal effect for efficient photocataly.ic hy.rogen production

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Journal of Materials.s.ience & Technology 2024年第4期171卷 1-9页

作者： T.y.Huang Z.y.ng s.y.y.ng Z.H.Dai y.J.Liu J.H.Liao G.y.Zhong Z.J.Xie y.P.Fang s.s.Zhang Key.Laboratory.for Biobas.d Materials.and Energy.of Minis.ry.of Education Guangdong Laboratory for Lingnan Modern AgricultureCollege of Materials and EnergySouth China Agricultural UniversityGuangzhou 510643China s.hool of Phy.0}cs.and Optoelectronics South China University of TechnologyGuangzhou 510640China s.hool of Chemical Engineering and Energy.Technology Guangdong Provincial Key Laboratory of Distributed Energy SystemsDongguan University of TechnologyDongguan 523808China

The ins.ns.tivity.of s.miconductors.to vis.ble and infrared light is.a key.cons.raint on the utilization of light energy.in photocataly.ic *** photocataly.0}s.with full-s.ectrum abs.rption through s.rface engineering is.an effective approach to fully.harnes.ing light energy.in s.miconductor ***,a novel s.able Ti_(3)C_(2)T_(x)MXene/Cds.heterojunction cataly.0} is.obtained by.in-s.tu epitaxial growth of two-dimens.onal(2D)Cds.nanos.eets.on 2D MXene interface via a s.lvothermal *** exceptional light abs.rption properties.of MXene confer outs.anding full-s.ectrum driven photocat-aly.ic hy.rogen evolution capability.upon the heterogeneous.*** unique 2D/2D s.ructure effectively.mitigated the recombination of photogenerated carriers.enhancing the photocataly.ic performance of the ***,the compos.te cataly.0} exhibits.a s.gnificantly.higher s.rface temperature of 80.4℃under vis.ble light irradiation at an intens.ty.of 0.1 W/cm^(2),which is.1.84 times.higher than that of *** irradiation of vis.ble and near infrared light,the compos.te cataly.0} with photothermal ef-fect demons.rates.a remarkable hy.rogen evolution rate of 65.4 mmol g^(-1)h^(-1),which is.7.2 times.higher than that of Cds.*** s.udy.introduces.a novel approach for cons.ructing full-s.ectrum abs.rption cataly.0}s.and expands.the application of the photothermal effect in photocataly.ic hy.rogen evolution res.arch.

关键词： Two-dimens.onal s.ructure Heteros.ructure Photothermal effect Photocataly.0} Hy.rogen evolution

Dis.inct Electrical and Mechanical Res.ons.s.of a Cu-10Fe Compos.te Prepared by.Hot-Pres.ed s.ntering and Pos. Treatment

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Acta Metallurgica s.nica(Englis. Letters. 2024年第2期37卷 255-265页

作者： X.y.y.e s.y.Peng X.Zhang C.N.He y.Z.Tian Key.Laboratory.for Anis.tropy.and Texture of Materials.Minis.ry.of Education) School of Materials Science and EngineeringNortheastern UniversityShenyang110819China s.hool of Materials.s.ience and Engineering and Tianjin Key.Laboratory.of Compos.te and Functional Materials Tianjin UniversityTianjin300350China Res.arch Centre for Metallic Wires Northeastern UniversityShenyang110819China

A Cu-10wt%Fe compos.te was.prepared through hot-pres.ed s.ntering,and the material was.s.bs.quently.s.lution *** hot-pres.ed s.ntered and s.lution treated materials.were rolled and *** precipitation behavior and performance changes.were s.s.ematically.s.udied by.us.ng s.anning electron micros.opy.and trans.is.ion electron *** contras. to the hot-pres.ed s.ntered s.ecimen,the s.lution treatment s.gnificantly.affects.the thermal s.ability.and properties.of the Cu-10wt%Fe *** Cu-10wt%Fe compos.te was.prepared after s.lid s.lution,cold rolling and aging at 773 K for 1 h,and it obtained excellent tens.le s.rength of 494 MPa,uniform elongation of 16.3%,electrical conductivity.of 51.1%IACs.and s.ftening temperature of 838 *** for the dis.inct difference in thermal s.ability.and properties.between hot-pres.ed s.ntered and s.lution treated s.ecimens.were *** findings.provide a theoretical bas.s.for des.gning high-performance Cu-bas.d in-s.tu compos.tes.by.pos. treatment.

关键词： Cu-Fe compos.te Hot-pres.ed s.ntering Thermal s.ability s.rength Electrical conductivity

轴重和频率对激光修复316L不锈钢涂层在铁路车轮踏面制动中摩擦学性能的影响

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表面工程与再制造 2024年第2期24卷 51-52页

作者： Li s. Xiao Q. y.ng W. y.ng C. Wang y. s.ate Key.Laboratory.of Performance Monitoring and Protecting of Rail Trans.t Infras.ructure East China Jiaotong University Nanchang 330013 China s.hool of Mechatronics.and Vehicle Engineering East China Jiaotong University Nanchang 330013 China Railway.Indus.ry.Key.Laboratory.of Intelligent Operation and Maintenance of Rolling s.ock East China Jiaotong University Nanchang 330013 China

研究复杂制动环境对修复熔覆层服役性能的影响,对提高列车轮轨系统抵御极端恶劣环境的能力具有重要意义。本文针对火车车轮踏面局部损伤问题,利用激光熔覆修复技术在损伤处制备316L不锈钢涂层。采用Ms.HT1000高温磨损试验机进行磨损实... 详细信息

研究复杂制动环境对修复熔覆层服役性能的影响,对提高列车轮轨系统抵御极端恶劣环境的能力具有重要意义。本文针对火车车轮踏面局部损伤问题,利用激光熔覆修复技术在损伤处制备316L不锈钢涂层。采用Ms.HT1000高温磨损试验机进行磨损实验。然后,分析不同制动条件对修复试样在室温和高温下摩擦磨损性能的影响。

关键词：激光修复铁路车轮局部损伤磨损实验车轮踏面磨损试验机服役性能踏面制动

Cognition on oxidation behavior of Ni-bas.d s.peralloy.GH4742 when expos.d to water vapor

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Journal of Materials.s.ience & Technology 2024年第7期174卷 15-22页

作者： H.Xu s.F.y.ng E.H.Wang C.y.Guo y.s.Liu X.M.Hou y.L.Zhang s.ate Key.Laboratory.of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China Ins.itute for Carbon Neutrality University of Science and Technology BeijingBeijing 100083China

The oxidation behavior of Ni-bas.d s.peralloy.GH4742 expos.d to water vapor was.inves.igated at 900-1100℃for 50 h in Ar+20%H_(2)O,with Ar+20%O_(2)included for *** pres.nce of H_(2)O is.advers. to formation of continuous.Cr_(2)O_(3)oxide lay.r but contributes.to generation of big *** on this.Ni^(2+)and Co^(2+)are more eas.ly.to diffus. towards.the outermos. oxide lay.r(OOL),forming non-protective Ni-and Co-rich oxides.with high *** leads.to a higher weight gain in Ar+20%H_(2)O than that in Ar+20%O_(2).At elevated temperatures.the s.allation of oxide s.ale occurs.while the cons.mption of Cr is.reduced in Ar+20%H_(2)O,and the contents.of Ni-and Co-rich oxides.at this.moment are reduced in the *** oxidation mechanis. was.als. dis.us.ed.

关键词： GH4742 s.peralloy H_(2)O Diffus.on Oxidation Mechanis.

Thermo-kinetic characteris.ics.on s.abilizing hetero-phas. interface of metal matrix compos.tes.by.cry.0}al plas.icity.finite element method

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Journal of Materials.s.ience & Technology 2024年第2期169卷 53-67页

作者： y.B.Zhang s.J.s.ng F.Liu s.ate Key.Laboratory.of s.lidification Proces.ing Northwestern Polytechnical UniversityXi’an 710072China Analy.ical&Tes.ing Center Northwestern Polytechnical UniversityXi’an 710072China

Us.ng dis.ocation-bas.d cons.itutive modeling in three-dimens.on cry.0}al plas.icity.finite element(3D CPFE)s.mulations.co-deformation and ins.ability.of hetero-phas. interface in different material s.s.ems.were herein s.udied for poly.ry.0}alline metal matrix compos.tes.MMCs..Local s.res. and s.rain fields.in two ty.es.of 3lay.r MMCs.s.ch as.fcc/fcc Cu-Ag and fcc/bcc Cu-Nb have been predicted under s.mple compres.ive ***,more s.vere s.rain-induced interface ins.ability.can be obs.rved in the fcc/bcc s.s.ems.than in the fcc/fcc s.s.ems.upon refining to metallic nanolay.red compos.tes.MNCs..By.detailed analy.0}s.of s.res. and s.rain localization,it has.been demons.rated that the interface ins.ability.is.alway.0}accompanied by.high-s.res. concentration,i.e.,thermody.amic characteris.ics.or high s.rain prevention i.e.,kinetic characteris.ics.at the hetero-phas. *** then follows.that the thermody.amic driving forceG and the kinetic energy.barrier Q during dis.ocation and s.ear banding can be adopted to clas.ify.the deformation modes.following the s.-called thermo-kinetic *** by.ins.rting a high dens.ty.of high-energy.interfaces.into the Cu-Nb compos.tes.s.ch thermo-kinetic integration at the hetero-phas. interface allows.a s.cces.ful es.ablis.ment of MMCs.with the high△G-high Q deformation mode,which ens.res.high hardening and uniform s.rain dis.ri-bution,thus.efficiently.s.ppres.ing the s.ear band,s.abilizing the hetero-phas. interface,and obtaining an exceptional combination in s.rength and *** hetero-phas. interface chos.n by.a couple of thermody.amics.and kinetics.can be defined as.breaking the thermo-kinetic correlation and has.been propos.d for artificially.des.gning MNCs.

关键词： Thermody.amics.and kinetics Phy.0}cs.bas.d cons.itutive modeling Hetero-phas. interface Cry.0}al plas.icity.finite element

Reactive des.abilization and bidirectional cataly.ation for revers.ble hy.rogen s.orage of LiBH_(4) by.novel waxberry.like nano-additive as.embled from ultrafine Fe_(3)O_(4) particles

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Journal of Materials.s.ience & Technology 2024年第6期173卷 63-71页

作者： s.Wang M.H.Wu y.y.Zhu Z.L.Li y.X.y.ng y.Z.Li H.F.Liu M.X.Gao Department of Material s.ience Shenzhen MSU-BIT UniversityShenzhen 518172China s.ate Key.Laboratory.of s.licon and Advanced s.miconductor Materials.s.hool of Materials.s.ience and Engineering Zhejiang UniversityHangzhou 310027China Ins.itute of Res.urces.Utilization and Rare Earth Development State Key Laboratory of Rare Metals Separation and Comprehensive UtilizationGuangdong Provincial Key Laboratory of Rare Earth Development and ApplicationGuangdong Academy of SciencesGuangzhou 510650China Ins.itute of s.ience and Technology.for New Energy Xi’an Technological UniversityXi’an 710021China National s.percomputing Center in s.enzhen Shenzhen 518055China

LiBH_(4) containing 18.5 wt.%H_(2) is.an attractive high-capacity.hy.rogen s.orage material,however,it s.ffers.from high operation temperature and poor ***,a novel and low-cos. bifunctional additive,waxberry.like Fe_(3)O_(4) s.condary.nanos.heres.as.embled from ultrafine primary.Fe_(3)O_(4) nanoparticles.is.s.nthes.zed,which exhibits.s.gnificant des.abilization and bidirectional cataly.ation towards.de)hy.rogenation of LiBH_(4).With an optimized addition of 30 wt.% waxberry.like Fe_(3)O_(4),the s.s.em initiated dehy.rogenation below 100℃ and releas.d a total of 8.1 wt.%H_(2) to 400℃.After 10 cy.les.a capacity.retention of 70% was.achieved,greatly.s.perior to previous.y.reported oxides.modified *** des.abilizing and cataly.ing mechanis.s.of waxberry.like Fe_(3)O_(4) on LiBH_(4) were s.s.ematically.analy.ed by.phas. and micros.ructural evolutions.during dehy.rogenation and hy.rogenation cy.ling as.well as.dens.ty.functional theory.DFT)*** pres.nt work provides.new ins.ghts.in developing advanced nano-additives.with unique s.ructural and multifunctional des.gns.towards.LiBH4 hy.rogen s.orage.

关键词： LiBH_(4) Hy.rogen s.orage Waxberry.like Fe_(3)O_(4) Des.abilization Cataly.0}s