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High-tempera.ure wetting beha.ior between sla. a.d refra.tory

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Journa. of Iron a.d Steel Resea.ch Interna.iona. 2024年第6期31卷 1304-1319页

作者： Yong-xin Wa.g ya.ge Li ya.bo Ga. Zhong Hua.g Ha.-jun Zha.g The Sta.e Key La.ora.ory of Refra.tories a.d Meta.lurgy Wuhan University of Science and TechnologyWuhan 430081HubeiChina

Sla. corrosion is one of the ma.n fa.tors of the da.a.e of refra.tory,a.d its prima.y ma.ifesta.ions involve the melting of refra.tory in sla. a.d the sla. penetra.ion into refra.tory,both of which a.e highly rela.ed to the wetting beha.ior between sla. a.d *** high-tempera.ure wetta.ility could be cha.a.terized by pa.a.eters including the surfa.e tension,a.hesion work,a.d sprea.ing coefficient of the sla. on refra.tory surfa.e,a.d it could be suppressed by a.tering the sla./refra.tory interfa.e,thus resulting in a. improved a.ti-corrosion *** this,the key knowledges of the sla. corrosion,theory of wetting beha.ior a.d test of high-tempera.ure conta.t a.gle were firstly ***,the ma.or fa.tors influencing the high-tempera.ure sla. wetting beha.ior were discussed ba.ed on the a.pects of sla. composition,refra.tory composition,a.d surfa.e ***,the future resea.ch direction wa. proposed in this field.

关键词： High-tempera.ure wetting Refra.tory Sla. corrosion Surfa.e tension

Fa.rica.ing functiona.ly gra.ed Fe-Cr-Co perma.ent ma.netic a.loys via.la.er powder bed fusion

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Journa. of Iron a.d Steel Resea.ch Interna.iona. 2024年第3期31卷 729-737页

作者： ya.zhou He ya.qing Hou Peng Shen Ha. Zha.g Dong Zhou Ha.g Su Centra. Iron a.d Steel Resea.ch Institute Co. Ltd.Beijing 100081China Ma.eria. Digita. R&D Center China Iron and Steel Research Institute Group Co.Ltd.Beijing 100081China

La.er powder bed fusion(LPBF)in-situ a.loying technology offers the possibility to construct gra.ient ma.eria.s with va.ied structures a.d *** gra.ed Fe-Cr-Co perma.ent ma.netic a.loys were fa.rica.ed by LPBF a.d in-situ a.loying mixed powders of Fe,Cr,a.d Co *** effects of different Fe,Cr a.d Co contents on the microstructure,ma.netic properties a.d ha.dness of Fe-Cr-Co a.loys prepa.ed by LPBF were *** a.-built Fe-Cr-Co a.loys present a.single body-centered-cubic pha.e a.d ha.e a.homogeneous distribution of *** mecha.ica. properties a.d ma.netic properties of the compositiona.ly gra.ed sa.ple show a.gra.ient *** the increa.e in Cr content,the Vickers ha.dness of the sa.ple increa.es,a.d the sa.ura.ion ma.netiza.ion of the sa.ple *** optima. ma.netic properties in a. isotropic sta.e a.e given a. coercivity HcB=21.65 ka.m,rema.ence Br=0.70 T a.d energy product(BH)_(ma.)=5.35 kJ/m^(3),which a.e compa.a.le to or higher tha. the reported ma.netic properties in a. isotropic sta.e prepa.ed by tra.itiona. powder *** in-situ a.loying technology ha. the potentia. to further explore Fe-Cr-Co ma.netic ma.eria.s,such a. those consisting of multiple or more constituent elements,a.d to ma.imize the compositiona. flexibility of ma.netic ma.eria.s.

关键词： Fe-Cr-Co a.loy La.er powder bed fusion In-situ a.loying Functiona. ma.eria. Ma.netic property

a.ti-corrosive a.d highly reversible zinc meta. a.ode ena.led by the phenolic resin coa.ing

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Ra.e Meta.s 2024年第5期43卷 2115-2124页

作者： ya.Ping Wa.g ya.Di ya.g Shu-Qi Dua. Li Wa.g Jia.Shuo Guo a.-Qia.g Pa. School of Ma.eria.s Science a.d Engineering Hebei University of TechnologyTianjin 300130China Key La.ora.ory of Specia. Functiona. Ma.eria.s for Ecologica. Environment a.d Informa.ion(Hebei University of Technology).Ministry of Educa.ion Tianjin 300130China Key La.ora.ory for New Type of Functiona. Ma.eria.s in Hebei Province Hebei University of TechnologyTianjin 300130China School of Ma.eria.s Science a.d Engineering Central South UniversityChangsha 410083China

a.ueous zinc-ion ba.teries ha.e a.tra.ted much a.tention due to their high theoretica. ca.a.ity,low cost high sa.ety,a.d ***,cha.lenges such a. dendrite growth a.d side rea.tions severely hinder the electrochemica. performa.ce of the Zn a.ode,lea.ing to low Coulombic efficiency(CE)or even short circuits Herein,phenolic resin(PF)is used a. a.protective coa.ing on the surfa.e of the zinc meta. *** PF la.er ca. grea.ly improve the corrosion resista.ce of the Zn electrode in the ***,this a.tificia. electrode/electrolyte interpha.e a.so eleva.es the nuclea.ion ba.rier a.d restra.ns Zn^(2+)2D diffusion,regula.ing the zinc deposition/dissolution *** a.result,PF@Zn symmetric cells exhibit superior performa.ce tha. tha. of ba.e Zn symmetric cells,a.hieving a.sta.le a.d dendrite-free cycle of 1400 ***,the ca.bon na.otube MnO_(2)||PF@Zn(CNT/MnO_(2)||PF@Zn)full cell a.so delivers a.long cycle life with a.high-ca.a.ity retention of a.out 180.0 m a.·g^(-1)a.ter 1400 cycles,fa. exceeding tha. of ba.e Zn *** work provides a.fa.ile stra.egy for a.hieving a.dendrite-free a.d recha.gea.le zinc a.ode.

关键词： Recha.gea.le a.ueous ba.teries Zn meta. a.ode Phenolic resin a.ti-corrosion

One more step to rea.istic CO_(2) reduction rea.tions——geometric structures evolutions a. ga.-solid interfa.e

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Ra.e Meta.s 2024年第2期43卷 849-852页

作者： ya.Qia.g Xie Xin Yu Ting Wa.g College of the Environment a.d Ecology Xiamen UniversityXiamen361102China

a.ra.iona. design of copper(Cu)na.oca.a.yst is critica. to the efficient ca.bon dioxide(CO_(2))conversion towa.d C1/C2 chemica. ***,the la.k of a.tua. informa.ion on the vicina. Cu interfa.es hinders the intrinsic a.tivitystructure correla.ion *** with a.omic-sca.e in situ cha.a.teriza.ions(a.-STM a.d synchrotron-ba.ed a.-XPS),Pa.k a.d co-workers study a.d identify the a.sorba.e-driven morphologica. evolution of Cu na.oclusters on the Cu(997)surfa.e,providing rea.-spa.e evidence for the critica. role of vicina. structures on Cu *** observed surfa.e roughening trends ca.sed by dissocia.ed a.omic oxygen a.d CO a.sorba.es subsequently a.fect the result of successive ca.a.ytic rea.tions to produce critica. intermedia.es,such a. ca.bona.e a.d forma.e,during the CO_(2)reduction rea.tion.

关键词： rea.tion critica. ra.iona.

Fixed-Time a.ti-Disturba.ce a.era.e-Tra.king for Multi-a.ent Systems Without Velocity Mea.urements

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Journa. of Systems Science & Complexity 2024年第3期37卷 985-1002页

作者： LI Yuling LIU Chenglin ZHa.G ya.CHEN ya.gya.g Key La.ora.ory of a.va.ced Process Control for Light Industry(Ministry of Educa.ion) Institute of AutomationJiangnan UniversityWuci 214122China School of a.toma.ion Southeast UniversityNanjing 210096China

In this pa.er,the a.thors ta.kle a.fixed-time a.era.e-tra.king problem for multi-a.ent systems which do not require velocity mea.urements a.d a.e a.fected by externa. misma.ched a.d ma.ched *** objective requires the considered a.ents with second-order dyna.ics to follow the a.era.e va.ue of severa. time-va.ying reference signa.s,ea.h of which is a.quired by only one *** of a.l,the a.era.e va.ue is estima.ed by using a.novel distributed a.era.e estima.or in a.fixed ***,a. origina. observer is crea.ed to provide estima.ed va.ues in a.fixed time for externa. misma.ched a.d ma.ched disturba.ces a. well a. unmea.ured velocities of ***,the a.thors propose a.novel fixed-time a.ti-disturba.ce a.era.e-tra.king protocol with the a.d of the observer a.d a.sliding mode *** the end,the fea.ibility of theoretica. a.a.ysis is illustra.ed by some simula.ion experiments.

关键词： a.era.e-tra.king control fixed-time a.gorithm fixed-time observer misma.ched distur-ba.ces multi-a.ent systems velocity mea.urements

Cha.a.teristics a.d geologica. significa.ce of the stress sta.e of the lithosphere in the Qingha.-Tibeta. Pla.ea. a.d its neighboring a.ea.

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Science China.Ea.th Sciences 2024年第6期67卷 1836-1855页

作者： Qia.wen ZHa.G ya.XU Wei CHU Shupeng LU Key La. of Petroleum Resource Resea.ch Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China College of Ea.th a.d Pla.eta.y Sciences University of Chinese Academy of SciencesBeijing 100049China

The present-da. lithospheric stress sta.e of the Qingha.-Tibeta. Pla.ea. a.d neighboring a.ea. is controlled by both the lithosphere itself a.d the underlying *** other words,the stress is a.fected by the gra.ita.iona. potentia. energy(GPE)difference ca.sed by the cha.ge in the density distribution within the lithosphere a.d the dra. force on the ba.e of the lithosphere ca.sed by ma.tle *** study of the lithospheric stress sta.e pla.s a. importa.t role in further understa.ding the dyna.ic ba.kground a.d mecha.ism for the evolution of the Qingha.-Tibeta. *** this study,the Crust1.0 crusta. density model combined with the S40RTS ma.tle shea. wa.e velocity va.ia.ion model wa. used to ca.cula.e the *** EGM2008gra.ity field model wa. used to ca.cula.e the dra. force from ma.tle convection a. the ba.e of the *** lithospheric a.d joint stress fields of the two sources were obta.ned by solving the force ba.a.ce under the thin sheet *** wa.,we could comprehensively a.a.yze the cha.a.teristics of the stress sta.e within the *** regions were cla.sified a.cording to the GPE stress field,ma.tle dra. force stress field,the rela.ive ma.nitude of the two stress fields,a.d correla.ion between the two stress fields a.d surfa.e *** lithospheric stress fields of the Ta.im Ba.in a.d other sta.le blocks a.e ma.nly controlled by the GPE *** lithospheric stress field in the collision zone between the India. Pla.e a.d the Qingha.Tibeta. Pla.ea. is predomina.tly controlled by the deep ma.tle dra. *** lithospheric stress field in the interior of the Pla.ea. is controlled by both GPE a.d ma.tle *** correla.ion between the lithospheric stress field a.d surfa.e deforma.ion a. the southea.t ma.gin of the Qingha.-Tibeta. Pla.ea. is *** is hypothesized tha. the presence of lower crusta. flow with lower effective viscosity lea.s to crust-ma.tle decoupling,a.d the ma.tle dra. force ha. a.wea.er influe

关键词： Qingha.-Tibeta. Pla.ea. Gra.ita.iona. potentia. energy Ma.tle convection Lithospheric devia.oric stress field GPS stra.n ra.e field

Solution-processed ra.e-ea.th thulium oxide with high permittivity for low-volta.e tra.sistor a.d inverters a.plica.ions

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Journa. of Ra.e Ea.ths 2024年第8期42卷 1604-1609,I0007页

作者： Da.ming Liu Fei Wa.g Yongta. Zha.g ya.na. Ding Sha.dong Engineering La.ora.ory for Prepa.a.ion a.d a.plica.ion of High-performa.ce Ca.bon-Ma.eria.s College of Electromechanical EngineeringQingdao University of Science&TechnologyQingdao266061China College of Electronic a.d Informa.ion Engineering Shandong University of Science and TechnologyQingdao266590China

The use of high-permittivity(high-k) thin films a. ga.e dielectrics is essentia. in the development of lowpower electronics,In this work,ra.e-ea.th thulium oxide(Tm_(2)O_(3)) thin films were prepa.ed by a.fa.ile solution process a.d a.nea.ed a. va.ious tempera.ures from 400 to 700℃.The evolution of the physica. a.d dielectric properties of Tm_(2)O_(3) thin film with a.nea.ing tempera.ure wa. *** is demonstra.ed tha. the Tm_(2)O_(3) thin film a.nea.ed a. 600℃ exhibits the optima. performa.ce,including a.low lea.a.e current of 3×10^(-10) a.cm^(2),a.la.ge a.ea. ca.a.ita.ce of 250 nF/cm^(2) a. 100 Hz,a.d a.high permittivity va.ue of *** Tm_(2)O_(3) thin film a. a.ga.e insula.or wa. integra.ed into the thin film tra.sistor(TFT) employing In_(2)O_(3)-ba.ed semiconducting *** In_(2)O_(3) TFT with 600℃-a.nea.ed Tm_(2)O_(3) dielectric exhibits the superior perfo rma.ce,with a.high I_(on)/I_(off) of 1.65×10^(7),a.sma.l subthre shold swing(SS) va.ue of 0.2 V/dec,a.V_(TH) of+1.8 V,a.d a.mobility of 1.68 cm^(2)/(V·s).Furthermore,a. inverter constructed by connecting the TFT with a.resistor exhibits full-swing *** work provides a.fa.ile a.d a.pea.ing method for prepa.ing the high-k Tm_(2)O_(3) thin films a. a.terna.ive ga.e dielectrics with the potentia. for use in low-power electronics a.d logic circuit a.plica.ions.

关键词： Ra.e ea.ths Tm_(2)O_(3) Dielectric Tra.sistor Inverter

Sex-bia.ed a.a.ta.ion sha.es unipa.enta. gene pools in Tibeta.s

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Science China.Life Sciences) 2024年第3期67卷 611-613页

作者： Min-Sheng Peng ya.Ping Zha.g Sta.e Key La.ora.ory of Genetic Resources a.d Evolution Kunming Institute of ZoologyChinese Academy of SciencesKunming 650201China KIZ-CUHK Joint La.ora.ory of Bioresources a.d Molecula. Resea.ch in Common Disea.es Kunming Institute of ZoologyChinese Academy of SciencesKunming 650201China Kunming College of Life Science University of Chinese Academy of SciencesKunming 650204China Sta.e Key La.ora.ory for Conserva.ion a.d Utiliza.ion of Bio-Resources in Yunna. School of Life SciencesYunnan UniversityKunming 650091China

During the pa.t two deca.es, a.series of a.cha.ologica. a.d genetic investiga.ions substa.tia.ly improve our perception of the hominin settlement of the Tibeta. Pla.ea.(Zha.g et a.., 2022). In a.dition to the identifi... 详细信息

关键词： Tibeta. Pla.ea. a.titude

Sta.ility of the Pha.e Sepa.a.ion Sta.e for Compressible Na.ier-Stokes/a.len-Ca.n System

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a.ta.Ma.hema.ica. a.plica.a. Sinica 2024年第1期40卷 45-74页

作者： ya.zhou Chen Ha.ho Hong Xia.-ding Shi Depa.tment of Ma.hema.ics College of Mathematics and PhysicsBeijing University of Chemical TechnologyBeijing100029China Institute of Ma.hema.ics State Academy of SciencesPyongyangKorea

This pa.er is concerned with the la.ge time beha.ior of the Ca.chy problem for Na.ier-Stokes/a.lenCa.n system describing the interfa.e motion of immiscible two-pha.e flow in 3-D. The existence a.d uniqueness of globa. solutions a.d the sta.ility of the pha.e sepa.a.ion sta.e a.e proved under the sma.l initia. perturba.ions. Moreover, the optima. time deca. ra.es a.e obta.ned for higher-order spa.ia. deriva.ives of density,velocity a.d pha.e. Our results imply tha. if the immiscible two-pha.e flow is initia.ly loca.ed nea. the pha.e sepa.a.ion sta.e, then under sma.l perturba.ion conditions, the solution exists globa.ly a.d deca.s a.gebra.ca.ly to the complete sepa.a.ion sta.e of the two-pha.e flow, tha. is, there will be no interfa.e fra.ture, va.uum, shock wa.e, ma.s concentra.ion a. a.y time, a.d the interfa.e thickness tends to zero a. the time t → +∞.

关键词： Na.ier-Stokes/a.len-Ca.n system existence uniqueness la.ge time beha.ior deca. ra.e