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中国铸造装备与技术 2018年第3期53卷 53-55页

作者：彭倩陈晓龙张鹏陈振江陕西柴油机重工有限公司陕西兴平713100

详细研究了呋喃树脂砂生产过程中的影响因素,主要涉及混砂比例、砂温、原辅材料粘度、空气湿度,初、中、终强度的关系,紧实度对型砂强度、硬度的影响,最后均提出应采取的措施。

关键词：抗拉强度混砂比例砂温湿度紧实度硬度

不同pH对醉马草内生真菌共生体幼苗生长和产碱的影响

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西北植物学报 2016年第4期36卷 715-720页

作者：万志文冯疆蓉陈振江曹莹李春杰兰州大学草地农业科技学院草地农业生态系统国家重点实验室兰州730020

该研究考察了不同pH(3、5、7、9和11)处理对醉马草内生真菌共生体幼苗的形态指标、叶绿素、可溶性糖以及麦角酰胺和麦角新碱含量的影响,以明确共生体幼苗生长和产碱的最适pH条件。结果表明:(1)醉马草内生真菌共生体幼苗株高、根长、分... 详细信息

该研究考察了不同pH(3、5、7、9和11)处理对醉马草内生真菌共生体幼苗的形态指标、叶绿素、可溶性糖以及麦角酰胺和麦角新碱含量的影响,以明确共生体幼苗生长和产碱的最适pH条件。结果表明:(1)醉马草内生真菌共生体幼苗株高、根长、分蘖和生物量等均在pH 7时(达到最大)显著高于其他4个酸碱处理,而且4个生长指标在强碱性处理下均显著高于强酸处理。(2)幼苗叶绿素含量也在pH 7的中性条件下(达到最高)显著高于pH 3、pH 5和pH 11处理,且强碱性处理下叶绿素含量也显著高于强酸处理,但幼苗可溶性糖含量在不同pH处理之间没有显著变化。(3)在相同时间内,醉马草内生真菌共生体幼苗麦角酰胺和麦角新碱含量均随环境pH值升高而增加;在处理时间为15d时,麦角酰胺在pH 9~11处理下积累量最多,麦角新碱含量在pH 11处理下达到最大值,酸性条件抑制醉马草内生真菌共生体幼苗产碱。研究发现,醉马草内生真菌共生体幼苗在中性环境条件下生长最佳,且在碱性条件下生长较酸性条件下生长良好,而体内麦角酰胺和麦角新碱的积累在强碱性条件下达到峰值,可将醉马草内生真菌共生体应用于盐碱地的栽培绿化。

关键词：醉马草内生真菌麦角酰胺麦角新碱 pH

Numerical Analysis of Cold-Formed Thin-Walled Steel Short Columns with Pitting Corrosion during Bridge Construction

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Structural Durability & Health Monitoring 2024年第2期18卷 181-196页

作者： Hongzhang Wang Jing Guo Shanjun Yang Chaoheng cheng Jing chen Zhihao chen CCCC Second Harbor Engineering Third Engineering Co. Ltd.Zhenjiang212000China Suqian Highway Development Center Suqian223800China School of Mechanics and Civil Engineering China University of Mining and TechnologyXuzhou221116China

Pitting corrosion is harmful during bridge construction,which will lead to uneven roughness of steel surfaces and reduce the thickness of ***,the effect of pitting corrosion on the mechanical properties of cold-formed thin-walled steel stub columns is studied,and the empirical formulas are established through regression fitting to predict the ultimate load of web and flange under pitting *** detail,the failure modes and load-displacement curves of specimens with different locations,area ratios,and depths are obtained through a large number of non-linear finite element *** for the specimens with pitting corrosion on the web,all the specimens are subject to local buckling failure,and the failure mode will not change with pitting corrosion,but the failure location will change with pitting corrosion location;the size,location,and area ratio of pitting corrosion have little influence on the ultimate load of cold-formed thin-walled steel short columns,but the loss rate of pitting corrosion section area has a greater impact on the ultimate bearing *** for the specimen with flange pitting corrosion,the location and area ratio of pitting corrosion have less influence on the ultimate load of cold-formed thin-walled steel short columns,and the section area loss rate has greater influence on the ultimate bearing capacity;the impact of web pitting corrosion on the ultimate load is greater than that of flange pitting corrosion under the same condition of pitting corrosion section *** prediction formulas of limit load which are suitable for pitting corrosion of web and flange are established,which can provide a reference for performance evaluation of corroded cold-formed thin-walled steel.

关键词： Pitting corrosion cold-formed thin-walled steel ultimate load prediction formula short columns

Optimizing FeCoNiCrTi high-entropy alloy with hydrogen pumping effect to boost de/hydrogenation performance of magnesium hydride

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Rare Metals 2024年第7期43卷 3273-3285页

作者： Meng-chen Song Fu-Ying Wu Yi-Qun Jiang Xiu-Zhen Wang Hu Zhao Li-Xin chen Liu-Ting Zhang School of Energy and Power Instrumental Analysis CenterJiangsu University of Science and TechnologyZhenjiang 212003China Max Planck Institute for Iron Research 40237DuisseldorfGermany School of Mechanical and Aerospace Engineering Nanyang Technological UniversitySingapore 639798Singapore State Key Laboratory of Silicon Materials Department of Materials Science and EngineeringZhejiang UniversityHangzhou 310027China

The exploration of efficient,long-lived and cost-effective transition metal catalysts is highly desirable for the practical hydrogen storage of magnesium hydride(MgH_(2)) in sustainable energy ***,FeCoNiCrTi high-entropy alloy(HEA) nanosheets were prepared via a facile wet chemical ball milling strategy and they were introduced into MgH_(2) to boost the hydrogen storage *** refined HEA exhibited superior catalytic activity on MgH_(2).In contrast to additive-free MgH_(2),the initial desorption temperature of the constructed MgH_(2)-HEA composite was reduced from 330.0 to 198.5℃ and a remarkable 51% reduction in the dehydrogenation activation energy was ***,the MgH_(2)-HEA composite only required one-twentieth time of that consumed by pure MgH_(2) to absorb 5.0 wt% of H_(2) at 225℃.The synergy between the "hydrogen pumping" effect of Mg_2Ni/Mg_2NiH_4 and Mg_2Co/Mg_2CoH_5 couples,as well as the good dispersion of Fe,Cr and Ti on the surface of MgH_(2) contributed to the enhanced de/hydrogenation performance of the MgH_(2)-HEA *** study furnishes important steering for the design and fabrication of multiple transition metal catalysts and may push the commercial application of magnesium-based hydrides one step forward.

关键词： Hydrogen storage Magnesium hydride High-entropy alloys Catalysis

催化裂化再生器燃烧处理炼化企业VOCs技术开发

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石油炼制与化工 2020年第11期51卷 64-70页

作者：张瑞波沈耀亚陈振江杨玉敏左世伟王龙延中石化炼化工程集团洛阳技术研发中心河南洛阳471003 中国石化上海高桥石油化工有限公司中石化洛阳工程有限公司

开发了一种利用炼化企业正常生产状态下的催化裂化再生器燃烧处理挥发性有机物(VOCs)的工艺工程技术,用以对炼油厂不同污染源所排放的不同浓度与种类的VOCs进行低能耗、高效率的处理。通过控制进入再生器的VOCs废气浓度与温度,同时应用... 详细信息

开发了一种利用炼化企业正常生产状态下的催化裂化再生器燃烧处理挥发性有机物(VOCs)的工艺工程技术,用以对炼油厂不同污染源所排放的不同浓度与种类的VOCs进行低能耗、高效率的处理。通过控制进入再生器的VOCs废气浓度与温度,同时应用高等级的阻火器、单向阀等设备,以确保VOCs废气输送及处理过程的安全性。由于催化裂化催化剂表面所沉积的重金属具有一定的催化氧化作用,使该技术在相对较低的燃烧温度下(670~720℃)具有良好的VOCs脱除效果。工业应用结果表明,经处理后所排放烟气中的VOCs质量浓度不大于10 mg m3,满足中国石油化工股份有限公司关于VOCs焚烧处理的控制标准(不大于15 mg m3),同时对FCC装置的正常生产、产品性质以及再生烟气的脱硫脱硝等无影响。

关键词：催化裂化再生器挥发性有机物氧化处理安全性

Influence of Current Density on the Photocatalytic Activity of Nd:TiO_(2) Coatings

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Journal of Wuhan University of Technology(Materials Science) 2024年第1期39卷 32-38页

作者：施渊吉 ZHANG Zhen DAI Yunzhong LI Jingxiao chen Zeyu School of Mechanical Engineering Nanjing Vocational University of Industry TechnologyNanjing 210046China College of Material Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing 210016China School of Materials Science and Engineering Nanjing Institute of TechnologyNanjing 211167China Key Laboratory of Modern Agricultural Equipment and Technology Jiangsu UniversityZhenjiang 212013China

The Nd:TiO_(2 )PEO coatings were formed in a phosphate-based electrolyte with the addition of Nd_(2)O_(3 )under the current density of 150,200,250 and 300 m A/cm^(2).SEM results showed that the micropores decreased on quantity and increased on scale with the increasing current *** results revealed that the roughness of the coatings increased with the increasing current *** and composition analysis showed that the Nd:TiO_(2) coatings were mainly composed of anatase and rutile *** the anatase phase content has reached the maximum value at the current density of 250 m A/cm^(2).XPS results indicated that Ti2p spin-orbit components of the Nd:TiO_(2) coatings are shifted towards higher binding energy,compared with the pure TiO_(2) coating,suggesting that some of the Nd^(3+)ions are combined with TiO_(2) lattice and led to *** test showed that the photocatalytic activity of Nd:TiO_(2) coatings varied in the same pattern with the anatase content variation in Nd:TiO_(2) *** photocatalytic experiment results show that the photocatalytic activity of Nd:TiO_(2) coatings can be greatly enhanced with moderate amount of Nd^(3+).However,excessive amount of Nd^(3+)does not have an effective impact on the photoctalytic activity improvement.

关键词： PEO current density AFM XPS Nd:TiO_(2) photocatalytic

40Cr/Q345B双金属复合行为及界面组织演变

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金属热处理 2024年第1期49卷 90-95页

作者：原海瑞陈玉波王培杰李振江太原科技大学材料科学与工程学院金属材料成型理论与技术山西省重点实验室山西太原030024

对40Cr/Q345B双金属材料进行热压缩温度为1000~1200℃、应变速率为0.01 s^(-1)、压下量为10%~50%的真空扩散连接试验,分析了热压缩温度和压下量对双金属材料应力-应变曲线及结合界面的影响。结果表明,应力-应变曲线的峰值应力随热压缩... 详细信息

对40Cr/Q345B双金属材料进行热压缩温度为1000~1200℃、应变速率为0.01 s^(-1)、压下量为10%~50%的真空扩散连接试验,分析了热压缩温度和压下量对双金属材料应力-应变曲线及结合界面的影响。结果表明,应力-应变曲线的峰值应力随热压缩温度的升高而减小,而对压下量的变化不敏感;双金属界面在低温低压下量条件下时存在未结合区,随着热压缩温度和压下量的增加,界面间隙消失,马氏体逐渐穿过界面,界面处晶粒由直晶界向弯曲晶界转变,直至界面消失,双金属形成了冶金结合。

关键词： 40Cr/Q345B双金属热压缩界面显微组织晶粒

Effects of in-situZrB_2 nanoparticles and scandium on microstructure and mechanical property of 7N01 aluminum alloy

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Journal of Rare Earths 2024年第3期42卷 612-620,I0007页

作者： Xizhou Kai Yuhui Wang Ruikun chen Yanjie Peng Anjun Shi Ran Tao Xiangfeng Liang Guirong Li Gang chen Xiaojing Xu Yutao Zhao School of Material Science and Engineering Jiangsu UniversityZhenjiang212013China Institute for Advanced Manufacturing and Modern Equipment Technology Jiangsu UniversityZhenjiang212013China

In this study, the in-situ synthesized ZrB_(2) nanoparticles and rare earth Sc were introduced to enhance the strength and ductility of 7N01 aluminum alloy, via the generation of high-melting and uniform nanodispersoids. The microstructure and mechanical property evolution of the prepared composites and the interaction between ZrB_(2) and Sc were studied in detail. The microstructure investigation shows that the introduction of rare earth scandium(Sc) can promote the distribution of ZrB_(2) nanoparticles, by improving their wettability to the Al melt. Meanwhile, the addition of rare earth Sc also modifies the coarse Al Zn Mg Mn Fe precipitated phases, refines the matrix grains and generates high-melting Al_3(Sc,Zr)/Al_3Sc nanodispersoids. Tensile tests of the composites show that with the combinatorial introduction of ZrB_(2) and Sc, the strength and ductility of the composites are improved simultaneously compared with the corresponding 7N01 alloy, ZrB_(2) /7N01 composite and Sc/7N01 alloy. And the optimum contents of ZrB_(2) and Sc are 3 wt% and 0.2 wt% in this study. The yield strength, ultimate strength and elongation of(3 wt% ZrB_(2) +0.2 wt% Sc)/7N01 composite are 477 MPa, 506 MPa and 9.8%, increased about 18.1%, 12.2%and 38% compared to 7N01 alloy. Furthermore, the cooperation strengthening mechanisms of ZrB_(2) and Sc are also discussed.

关键词： 7N01 aluminum alloy In-situ ZrB_(2)nanoparticles Rare earth Sc Microstructure Mechanical property Mechanism

State Estimation of Drive-by-Wire Chassis Vehicle Based on Dual Unscented Particle Filter Algorithm

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Chinese Journal of Mechanical Engineering 2024年第1期37卷 99-113页

作者： Zixu Wang Chaoning chen Quan Jiang Hongyu Zheng Chuyo Kaku State Key Laboratory of Automotive Simulation and Control Jilin UniversityChangchun 130022China Jiangsu Chaoli Electric Co.Ltd. Zhenjiang 212321China

Accurate vehicle dynamic information plays an important role in vehicle driving ***,due to the characteristics of high mobility and multiple controllable degrees of freedom of drive-by-wire chassis vehicles,the current mature application of traditional vehicle state estimation algorithms can not meet the requirements of drive-by-wire chassis vehicle state *** paper proposes a state estimation method for drive-by-wire chassis vehicle based on the dual unscented particle filter algorithm,which make full use of the known advantages of the four-wheel drive torque and steer angle parameters of the drive-by-wire chassis *** the dual unscented particle filter algorithm,two unscented particle filter transfer information to each other,observe the vehicle state information and the tire force parameter information of the four wheels respectively,which reduce the influence of parameter uncertainty and model parameter changes on the estimation accuracy during *** performance with the dual unscented particle filter algorithm,which is analyzed in terms of the time-average square error,is superior of the unscented Kalman filter *** effectiveness of the algorithm is further verified by driving simulator *** this paper,a vehicle state estimator based on dual unscented particle filter algorithm was proposed for the first time to improve the estimation accuracy of vehicle parameters and states.

关键词： Drive-by-wire chassis vehicle Vehicle state estimation Dual unscented particle filter Tire force estimation Unscented particle filter

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某铸件螺孔缺陷的一种分析计算方法

中国铸造装备与技术 2021年第4期56卷 70-72页

作者：李骥陈振江赵悦光彭倩陕西柴油机重工有限公司铸造事业部陕西兴平713100

关重铸件螺孔内出现缩松缺陷后,根据螺孔装配受力要求,通过计算分析缺陷对螺孔受力的影响,提出快捷经济适用的处理方案,经过验证处理方案有效可行,为后续处理螺孔缺陷提供参考。

关键词：螺孔缺陷受力分析计算分析方法