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Investigation of bubbles escape behavior from low basicity mold flux for high-Mn high-Al steels using 3D X-ray microscope

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 102-110页

作者： Qiang Liu Xiang Li Shen Du Ming Gao yanbin Yin Jiongming Zhang State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China

During the continuous casting process of high-Mn high-Al steels,various types of gases such as Ar need to escape through the top of the *** which,the behavior of bubbles traversing the liquid slag serves as a restrictive link,closely associated with viscosity and the thickness of liquid *** contrast to two-dimensional surface observation,three-dimensional(3D)analysis method can offer a more intuitive,accurate,and comprehensive ***,this study employs a 3D X-ray microscope(3D-XRM)to obtained spatial distribution and 3D morphological characteristics of residual bubbles in mold flux under different basicity of liquid slag,different temperatures,and different holding *** results indicate that as basicity of slag increases from 0.52 to 1.03,temperature increases from 1423 to 1573 K,the viscosity of slag decreases,the floating rate of bubbles *** addition,when holding time increases from 10 to 30 s,the bubbles floating distance increases,and the volume fraction and average equivalent sphere diameter of the bubbles solidified in the mold flux gradually *** one word,increasing the basicity,temperature,and holding time leading to an increase in the removal rate of bubbles especially for the *** findings of bubbles escape behavior provide valuable insights into optimizing low basicity mold flux for high-Mn high-Al steels.

关键词： mold flux low basicity bubbles three-dimensional X-ray microscope viscosity

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高发射率节能涂层的制备及性能研究

武汉科技大学学报 2007年第6期30卷 561-563页

作者：但智钢苍大强周惠敏白皓宗燕兵北京科技大学冶金与生态工程学院北京100083 山东慧敏科技开发有限公司山东济南250100

在耐火材料表面成功制备出新型高发射率节能涂层,涂层的发射率达到0.90,厚度约为300μm。涂层与基体间有3 mm左右渗透层,基体到涂层的连续过渡层结构保证了涂层与基体间良好的黏结性能和优异的抗剥落能力。涂层在1750 m3高炉热风炉上应... 详细信息

在耐火材料表面成功制备出新型高发射率节能涂层,涂层的发射率达到0.90,厚度约为300μm。涂层与基体间有3 mm左右渗透层,基体到涂层的连续过渡层结构保证了涂层与基体间良好的黏结性能和优异的抗剥落能力。涂层在1750 m3高炉热风炉上应用。结果表明,涂层能提高热风温度28℃,同时减小送风温度的波动。高发射率涂层强化了气-固相间辐射传热,提高了炉窑的热效率,从而缩短了加热时间、提高加热温度和降低燃料消耗。

关键词：高发射率涂层工业炉节能

Confirmation of the Major Grenville Event in the Qinling Complex of the Qinling Orogenic Belt,Central China

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Journal of Earth Science 2019年第3期30卷 494-509页

作者： Chong Li Liudong Ren Shi zong yanbin Wang Miao Li Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China Institute of Geomechanics Chinese Academy of Geological Sciences Beijing 100081 China

The Qinling Complex from the Qinling orogenic belt was generally considered to be part of the Caledonian orogeny, however information of the Grenville event of the Qinling Complex has been poorly recognized. Two granite samples of greenschist-facies and two paragneiss samples of amphibolitefaices are identified from the Qinling Complex. The granites occur along the regional gneissosity of the Qinling Complex, thus it is suggested that their magmatic zircon ages(~970 Ma) mark the lower boundary of the main metamorphic age(amphibolite-granulite facies). In addition, some early-formed metamorphic zircons(~1 000 Ma) are distinguished in the granites, which may reflect the information about the source area of the granites. Therefore the major metamorphism of amphibolite-granulite facies in the Qinling Complex is constrained at Early Neoproterozoic(~1 000 Ma), not Early Paleozoic as conventionally considered. In the Early Paleozoic, the Qinling Complex was characterized by multiple extension-shear activities, overprint of greenschist-facies metamorphism and emplacement of extensive granites. These granites and related thermal events could reset the U-Pb isotopic system of the early-formed zircons, leading to the apparent zircon ages younger than their protolith age. As a result, the Qinling Complex is a modified Early Neoproterozoic orognenic belt or an independent block, which became a continental margin arc during the Early Paleozoic, being accompanied by metamorphism, deformation, and emplacement of continental arc granites. The Erlangping, Kuanping, and Taowan groups to the north of the Qinling Complex show more intensive deformation of the Caledonian, and their oblique subduction towards the Qinling Complex caused the formation of eclogites. Afterwards, the Qinling Complex was amalgamated with the Erlangping, Kuanping, and Taowan groups, which all experienced the same Caledonian orogeny, and possible later orogenies.

关键词： Neoproterozoic Caledonian metamorphism granite zircon chronology Qinling Complex

New perylene diimide derivatives: stable red emission, adjustable property from ACQ to AIE, and good device performance with an EQE value of 4.93%

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Science Bulletin 2018年第2期63卷 108-116页

作者： Luyi zong yanbin Gong Yun Yu Yujun Xie Guohua Xie Qian Peng Qianqian Li Zhen Li Department of Chemistry Hubei Key Lab on Organic and Polymeric Opto-Electronic Materials Wuhan University Wuhan 430072 China Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China

Perylene diimide （PDI） derivatives, due to their special opto-electronic property, have been successfully utilized in organic field-effect transistor （OFET）, solar cells, and as non-fullerene acceptor and others, while few cases in organic light-emitting diodes （OLEDs）. In this work, six perylene bisimide-based red emitters, N＇N＇-bis（2-decyltetradecyl）-1-（[1,1′：3′,1″-terphenyl]-5′-yl）perylene-3,4,9,10-diimide （STPH）, N＇N＇-bis（2-decyltetradecyl）-1,7-bis（[1,1′：3′,1″-terphenyl]-5′-yl）perylene-3,4,9,10-diimide （DTPH）, N,N＇- bis（2-decyltetradecyl）-1-（5′-phenyl-[1,1′：3′,1″-terphenyl]-4-yl）perylene-3,4,9,10-diimide （STRPH）, N,N′- bis（2-decyltetradecyl）-1,7-bis（5′-phenyl-[ 1 ,1′：3′,1＂-terphenyll-4-yl）perylene-3,4,9,10-diimide （DTRPH）, N,N′-bis（2-decyltetradecyl）-1-（4-（2,2-diphenylvinyl）phenyl）perylene-3,4,9,10-diimide/STTPE） and N,N＇- bis（2-decyltetradecyl）-1,7-bis（4-（2,2-diphenykvinyl）phenyl）perylene-3,4,9,10-diimide （DTTPE）, with the excellent chemical, thermal and photo-chemical stability, are synthesized through the convenient Suzuki coupling reaction, in which, the fluorescent properties can be modified easily from ACQ to AIE by just simply changing the bulky volume of the introduced aromatic substituents. After being fabricated into organic light-emitting diodes, STRPH exhibits the best performance with the maximum luminescence, power efficiency, current efficiency and external quantum efficiency of 1,948 cd m-2, 2.04lm W-1, 5.85 cd A-1, 4.93% at Commission Internationale de L＇Eclairage （CIE） coordinates of （0.56, 0.34）, as the result of the high efficient energy transfer and good energy match achieved in the device.

关键词： PDI derivativesRed emittersOrganic light-emitting diodesAggregation induced emission

Distribution of the Pan-African Domains in East Antarctica and Adjacent Areas

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Acta Geologica Sinica(English Edition) 2020年第S1期94卷 45-46页

作者： REN Liudong zong Shi WANG yanbin LI Chong Institute of Geology Chinese Academy of Geological SciencesBeijing 100037China

The Pan-African event is widely distributed in East Antarctica craton. Many terranes or outcrops of the craton bear more or less signs of the event. From characteristics of the shear zones, granites, pegmatites, feature and time of high grade metamorphism and detrital zircon ages peaks of the downflowing sediments from the plateau, the Pan-African event in the East Antarctica and adjacent areas in the Gondwana reconstruction, like SE Africa, southern India and SW Australia, wasdistributed as special zones or areas in many localities, including both the coastal regions and interior of the East Antarctica. In geochemistry, the granites are generally anorogenic, ocassionally with some gabbros or dolerite dykes, showing sign of bi-modal feature. The water or fluid available along the shear zones were responsible for retrogression of the earlier, e.g., Grenville age, high grade outcrops to later Pan-African amphibolite facies metamorphism. Meanwhile, the Pan-African event has influenced most isotopic systems, including the U-Pb, Sm-Nd, Rb-Sr and Ar-Ar systems, giving younger apparent ages. Manifestation of the Pan-African event is distributed from possibly locally granitic magmatism, to wider medium-high grade metamorphism, and mostly widespread in resetting for some isotope systems, suggesting the prevailing thermal *** Gondwana formation, local depressions in the East Antarctica could be filled with sediments, implying the initial breakup period of the Rodinia. The later Pan-Gondwana counterrotating cogs shaped the interstitial fold belts between continent blocks and formed a set of shear zones. The mafic underplating in the Gondwana may be responsible for the widespread granites, pegmatites and more or less isotopic resetting due to strong thermal effect from the deep. That is, the Pan-African event is a possible response of the plate movement surrounding the continent swarms in the non-stable interior of theyet consolidated *** Pan-African event ma

关键词： Pan-African event distribution granite metamorphism East Antarctica

Solving Low-Density Multiple Subset Sum Problems with SVP Oracle

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Journal of Systems Science & Complexity 2016年第1期29卷 228-242页

作者： PAN yanbin ZHANG Feng Key Laboratory of Mathematics Mechanization NCMISAcademy of Mathematics and Systems ScienceChinese Academy of Sciences

It is well known that almost all subset sum problems with density less than 0.9408… can be solved in polynomial time with an SVP oracle that can find a shortest vector in a special *** this paper,the authors show that a similar result holds for the k-multiple subset sum problem which has k subset sum problems with exactly the same ***,for the single subset sum problem(k=1),a modified lattice is introduced to make the proposed analysis much simpler and the bound for the success probability tighter than ***,some extended versions of the multiple subset sum problem are also considered.

关键词： Lattice low-density multiple modular subset sum problem multiple subset sum problem

Effect of cavity defect on the triaxial mechanical properties of high-performance concrete

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Frontiers of Structural and Civil Engineering 2022年第5期16卷 600-614页

作者： yanbin ZHANG Zhe WANG Mingyu FENG School of Civil Engineering Beijing Jiaotong UniversityBeijing100044China

The stress concentration of pipe structure or cavity defect has a great effect on the mechanical properties of the high-performance concrete(HPC)members in deep underground ***,the behaviour of HPC with cavities under triaxial compression is not understood,especially when pressurized liquid flows into the fractures from the *** study aims to investigate the effect of the cavity and the confining pressure on the failure mechanisms,strengths,and deformation properties of HPC with a new experimental *** this experiment,the pressurized liquid can only contact the surface of the sample in the cavity,while the other surfaces are isolated from the pressurized *** further explore the effect of the cavity,the same experiments are also conducted on sealed and unsealed intact samples without a *** failure modes and stress-strain curves of all types of the samples are *** various confining pressures,all the samples with a cavity suffer shear failure,and there are always secondary tensile fractures initiating from the cavity ***,it can be determined from the failure modes and the stress-strain curves that the shear fractures result from the sidewall *** on the different effects of the cavity on the lateral deformations in different directions,the initiation of the sidewall fracture is well *** experimental results show that both the increase of the confining pressure and the decrease of the cavity size are conducive to the initiation of sidewall ***,the cavity weakens the strength of the sample,and this study gives a modified Power-law criterion in which the cavity size is added as an impact factor to predict the strength of the sample.

关键词： high-performance concrete cavity conventional triaxial compression pressurized liquid modified power-law criterion

High-Pressure Experimental Studies on Geo-Liquids Using Synchrotron Radiation at the Advanced Photon Source

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Journal of Earth Science 2014年第6期25卷 939-958页

作者： yanbin Wang Guoyin Shen Center for Advanced Radiation Sources The University of Chicago HPCAT Geophysical Laboratory Carnegie Institution of Washington

We review recent progress in studying silicate, carbonate, and metallic liquids of geological and geophysical importance at high pressure and temperature, using the large-volume high-pressure devices at the third-generation synchrotron facility of the Advanced Photon Source, Argonne National Laboratory. These integrated high-pressure facilities now offer a unique combination of experimental techniques that allow researchers to investigate structure, density, elasticity, viscosity, and interfacial tension of geo-liquids under high pressure, in a coordinated and systematic fashion. Experimental techniques are described, along with scientific highlights. Future developments are also discussed.

关键词： high pressure synchrotron melts liquid structure magma dynamics mantle dynamics

Dirac structures on protobialgebroids

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Science China Mathematics 2006年第10期49卷 1341-1352页

作者： YIN yanbin HE Longguang LMAM Capital Normal University Beijing 100037 China LMAM Capital Normal University Beijing 100037 China

Protobialgebroids include several kinds of algebroid structures such as Lie algebroid,Lie bialgebroid, Lie quasi-bialgebroid, etc. In this paper, the Dirac theories are generalized from Lie bialgebroid to protobialgebroid. We give the integrable conditions for a maximally isotropic subbundle being a Dirac structure for a protobialgebroid by the notion of a characteristic pair. From the integrable conditions, we found out that the Dirac structure has closed relations with the twisting of a protobialgebroid. At last, some special cases of the Dirac structures for protobialgebroids are discussed.

关键词： Lie bialgebroid, protobialgebroid, characteristic pair, Courant algebroid,twisted Poisson manifold, supermanifold.