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Effect of dummy vias on interconnect temperature variation

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Chinese Science Bulletin 2011年第21期56卷 2286-2290页

作者： WANG Zeng dong Gang yang YinTang li JianWei Key Laboratory of the Ministry of Education for Wide Band-Gap Semiconductor Materials and Devices Microelectronics InstituteXidian UniversityXi'an 710071China

The number of the dummy via can significantly affect the interconnect average *** paper explores the modeling of the interconnect average temperature in the presence of multiple dummy *** proposed model incorporates the multi-via effect into the effective thermal conductivity of the interlayer dielectric (ILD) to obtain accurate *** different ILDs,the multi-via effect is analyzed and ***,the extended applications of the multi-via effect are presented in this paper to obtain the minimum interconnect average temperature increase with a given via separation or *** study suggests that the multi-via effect should be accounted for in integrated circuits design to optimize the performance and design accuracy of integrated circuits.

关键词：互连温度变化集成电路设计平均温度平均气温层间绝缘优化设计 ILD

Surface Nanocrystallization of Nb-Ti Stabilized 439M Ferritic Stainless Steel

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Journal of Iron and Steel Research International 2014年第9期21卷 891-896页

作者： Yao-chun ZHANG Chao CHEN Cheng-jia SHANG dong-yang li Nuclear Equipment Division CNNC China Nuclear Power Engineering Co.Ltd. School of Materials Science and Engineering University of Science and Technology Beijing Department of Chemical and Materials Engineering University of AlbertaEdmonton T6G2V4AlbertaCanada

A new nanocrystallization process was designed, which included punching the surface coating to generate dislocation network or cells and recovery treatment to turn the dislocation cells into nano-sized grains. The effort was made to increase the service life of Nb-Ti stabilized 439M stainless steel surface with medium passive ability, particularly to enhance the outmost surface layer by nanocrystallization for improving resistances to corrosion. Electrochemical properties, electron work functions （EWFs）, nano-mechanical properties of the nanocrystallized surfaces were investigated. It was demonstrated that the nanocrystallized 439M stainless steel surface exhibited improved resistance to corrosion in 0.5 mol/L H2 SO4 solution. However, the nanoci＇ystallized 439M stainless steel surface exhibited decreased resistance to corrosion in 3.5% NaCl solution.

关键词： nanocrystallization corrosion ferritic stainless steel punching recovery

Density Functional Theory Study on La Complex with Schiff-base as Building Block

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Chinese Journal of Structural Chemistry 2006年第2期25卷 197-203页

作者： XIA Shu-Wei XU Xiang SUN Ya-li FAN Yu-Hua BI Cai-Feng ZHANG dong-Mei yang li-Rong Department of Chemistry Ocean University of China Qingdao 266003 China

Quantum density functional theory （DFT） results are reported for the building block [LaL^1（NO3）] of La complex [LaL^1（NO3）]NO3·5H2O （L^1 = （CH3）2CHCH2CH（NCHC4H3O）COO^-）. The structure was optimized and the calculation results show that the lanthanum ion is coordinated by one nitrogen atom and three oxygen atoms of L^1 and two oxygen atoms of nitrate ion. The bond length of La-N is 0.2637 nm and the average length of La-O is 0.2526 nm, which are consistent with the literatures. In addition, the stabilities, electronic structural characteristics and IR spectra of the complex have been analyzed, which describe the coordination of lanthanum ion with other atoms in detail.

关键词： rare-earth Schiff-base lanthanum complex density functional theory

Effect of SiC content on dry sliding wear, corrosion and corrosive wear of Al/SiC nanocomposites

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Transactions of Nonferrous Metals Society of China 2016年第7期26卷 1801-1808页

作者： Sareh MOSLEH-SHIRAZI Farshad AKHLAGHI dong-yang li School of Metallurgy and Materials Engineering College of EngineeringUniversity of Tehran Department of Chemical and Materials Engineering University of Alberta

The corrosion, corrosive wear and dry sliding wear of nanocomposites, are extremely complicated and involve various chemical, physical anbd mechanical factors. The aim of this work is to investigate the effects of nanosized SiC content on the hardness, dry sliding wear, corrosion and corrosive wear of Al/SiC nanocomposites synthesized by mechanical milling cold pressing and hot extrusion. The corrosion resistance of these composites in 3%NaCl solution was investigated by electrochemical polarization testing and their dry sliding as well as corrosive wear resistance in the same solution was evaluated using a pin-on-disc tester. The microstructures of the samples and their worn surfaces were examined using scanning electron microscopy. It was shown that the dry sliding wear and corrosion resistance of these nanocomposites were improved with the increase of SiC content. It was concluded that due to the lubrication effect of the solution, both the friction coefficient and frictional heat that might soften the material were reduced. In addition, the improved strength of the nanocomposites combined with their better corrosion resistance contributed to their increased corrosive wear resistance, compared with the base alloy. The prominent wear mechanism in the unreinforced alloy was adhesive wear, in the Al/SiC nanocomposites, the wear mechanism changed to abrasive.

关键词： Al 6061 SiC nanocomposite mechanical milling corrosion dry sliding wear corrosive wear

Body Symbol and Popular Conceptual Identification for Star Brand

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Journal of literature and Art Studies 2021年第11期11卷 860-869页

作者： yang dong-li School of History and Culture Shandong UniversityJinan250100China

Body symbol is generally regarded as the representation of public self-identity in ***,it is neither a pure symbol nor a pure *** limits its thorough expression of the public self to a certain *** pan symbol mechanism of consumer society further dispels discord between symbol and natural body,so that body can clearly represent the self-identity of the public *** brand is a typical embodiment of body symbols in consumer *** the conceptual identification for constructing star brand belongs to commercial competition strategy,it is also the confirmation for public identity at the practical level.

关键词： body symbol star brand public self distinguish

Aesthetic Utopia,Revolution in Daily life and Identity Construction of Peasant Paintings

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Journal of literature and Art Studies 2023年第1期13卷 47-60页

作者： yang dong-li School of History and Culture Shandong UniversityJinanChina

Peasant painting is a kind of painting created by farmers as creative subject,bearing rich *** to the historical development of peasant painting in reality,the types of meaning it carried could be divided into three types in chronological order:political ideological significance,folk life significance,and creative fashion *** three types of meaning gave rise to three types of aesthetic utopia,namely political aesthetic utopia,folk aesthetic utopia and fashion aesthetic *** three types of aesthetic utopia reflected three forms of negation and revolution of daily *** the political aesthetic utopia resisted was the alienation force of material *** folk aesthetic utopia resisted was the desire for material and the binding of political *** fashion aesthetic utopia opposed the relatively narrow *** these three forms of resistance,the public also constructed three identities:the interpreter of their own aesthetic interpretation of political ideology,the interpreter of their own aesthetic interpretation of real life from perspective of local feelings,and the interpreter of their own aesthetic interpretation of real life from perspective of the relationship between themselves and the world.

关键词： peasant paintings aesthetic utopia daily life revolution symbol identity

Catalytic combustion properties of nanocomplex oxide for natural gas

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Progress in Natural Science:Materials International 2005年第11期15卷 1053-1056页

作者： MA lijing, yang dong, li Yingxia, BAI Shouli, CHEN Aifan and LUO Ruixian (Beijing University of Chemical Technology, Beijing 100029, China) Beijing University of Chemical Technology Beijing 100029 China

The catalysts of copper oxide supported on cerium dioxide were prepared by different methods for methane catalytic combustion. The effects of copper content in the catalysis and calcination temperatures of the catalysts on the catalytic activity are investigated. Results show that the complex oxide catalyst exhibits high catalytic activity for methane combustion due to the synergistic effect of CuO and CeO2. The catalyst prepared by impregnation is more active than that prepared by controlled coprecipitation even if CuO content is the same. When W(CuO) light-off temperature and full conversion temperature for the CH4 reaction decrease with the increasing of CuO content in the catalysts. However, when the copper content is above 13% , the excess CuO has a negative effect on the catalytic activity owing to the formation of bulk CuO particles. A proper calcinations temperature of 650℃ can lead to a high dispersion of CuO and accordingly can enhance the catalytic activity of the composites.

关键词： natural gas cerium dioxide copper oxide catalytic combustion catalytic activity.

Microstructural evolution during the progressive transformation-induced plasticity effect in a Fe-0.1C-5Mnmedium manganese steel

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 369-379页

作者： Mei Zhang Wenhao li yangfei Chen yang Jiang Xiaofei Guo Han dong School of Materials Science and Engineering Shanghai UniversityShanghai 200444China State Key Laboratory of Advanced Special Steel Shanghai UniversityShanghai 200444China

The microstructural evolution of a cold-rolled and intercritical annealed medium-Mn steel(Fe-0.10C-5Mn)was investigated during uniaxial tensile ***-situ observations under scanning electron microscopy,transmission electron microscopy,and X-ray diffraction analysis were conducted to characterize the progressive transformation-induced plasticity process and associated fracture initiation *** findings were discussed with the local strain measurements via digital image *** results indicated that Lüders band formation in the steel was limited to 1.5%strain,which was mainly due to the early-stage martensitic phase transformation of a very small amount of the less stable large-sized retained austenite(RA),which led to localized stress concentrations and strain hardening and further retardation of *** small-sized RA exhibited high stability and progressively transformed into martensite and contributed to a stably extended Portevin-Le Chatelier *** volume fraction of RA gradually decreased from 26.8%to 8.2%prior to *** the late deformation stage,fracture initiation primarily occurred at the austenite/martensite and ferrite/martensite interfaces and the ferrite phase.

关键词： medium-Mn steel retained austenite progressive transformation-induced plasticity effect local strain fracture initiation

Hydrodynamic Effect of the Regulation Project of yangtze River Deepwater Channel Downstream of Nanjing

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China Ocean Engineering 2013年第6期27卷 767-779页

作者：杨东利窦希萍张新周罗小峰 College of Harbor Coastal and Offshore Engineering Hohai University President's Office Nanjing Hydraulic Research Institute Key Laboratory of Port Waterway & Sedimentation Engineering MOC Nanjing Hydraulic Research Institute

A two-dimensional flow numerical model of the tidal reaches, which total length is more than 700 km, is established from Datong to the yangtze River estuary. The tidal levels, velocities, diversion ratios and dynamic axes before and after the separate regulation of each reach and combined regulation of all reaches are obtained. The comparative analysis shows that the regulation project of a separate reach basically has no impact on velocity distributions and variations of diversion ratios of upper and lower reaches, the variations of dynamic axes are only within the local scope of the project. The regulation project of a separate reach also has less impact on the water level in the lower adjacent reaches, but will make the water levels in the upper reaches rise. After the implementation of the regulation projects for all reaches, the rise of water level in the upstream reaches will have a cumulative impact.

关键词： yangtze River deepwater channel regulation project numerical model