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反向处理铜箔微纳组织形成机理及其对力学性能的作用机制

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表面技术 2024年第16期53卷 219-228页

作者：高颢洋郑月红牛嘉楠朱敏喇培清祝思佳兰州理工大学材料科学与工程学院兰州730050 兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室兰州730050

目的第五代移动通信技术(5G)时代,高频高速信号传输过程中由于“趋肤效应”引起的信号损耗甚至“失真”越来越严重,为了解决这一问题,提出了一种反向处理铜箔的新技术,然而国内当前应用的高性能反向处理铜箔(RTF)主要依赖进口,要想在短... 详细信息

目的第五代移动通信技术(5G)时代,高频高速信号传输过程中由于“趋肤效应”引起的信号损耗甚至“失真”越来越严重,为了解决这一问题,提出了一种反向处理铜箔的新技术,然而国内当前应用的高性能反向处理铜箔(RTF)主要依赖进口,要想在短时间内缩小国内外铜箔性能和生产效率的差距,最终实现这类高端铜箔的国产化,必须在明确该类铜箔微纳结构形成机理及其对性能影响的前提下,加快制备工艺的开发和优化。方法采用电镀法在阴极钛辊上沉积了电解生箔,在其光面进行粗化和镀Zn层等后续处理获得反向处理铜箔,同时以国外反向处理铜箔为参照,采用X射线衍射仪、扫描电子显微镜和透射电子显微镜详细分析其微纳组织与结构,采用激光共聚焦显微镜和万能试验机测量其粗糙度和拉伸性能。结果本工作中的RTF具有与国外商业产品相似的微观结构,由小的等轴晶和较大的柱状晶组成,且包含较多的纳米孪晶,孪晶界占比为30.8%,平均宽度为7.9 nm。S面是均匀的米粒状铜颗粒,而M面是较大的圆锥形铜颗粒。S面上的Zn层均匀致密,厚度约为6.5 nm,只有小部分Zn扩散到基底上形成CuZn3相。但从S面到M面,优选取向从(111)Cu逐渐变为(220)Cu,这与参比RTF略有不同。性能方面,参比RTF的Ra和Rz分别为1.22、1.42μm,抗拉强度为335.10 MPa,伸长率为15.5%,本工作中的RTF具有较低的粗糙度,Ra和Rz分别为0.68、1.03μm,其强度也具有明显优势(393.68 MPa),但延展性低于参比样品。通过对比分析,总结了铜箔在初始外延、过渡生长和电沉积条件控制的生长阶段3个阶段的生长特性,给出了影响每个阶段晶粒生长的主要因素,并且详细讨论了晶粒尺寸和纳米孪晶宽度对铜箔拉伸性能的影响。结论对RTF微观结构和性能的深入研究,有助于找到高性能铜箔国产化“瓶颈”的根源,为高性能铜箔在5G通信领域的进一步发展和应用奠定基础。

关键词：铜箔电镀反向处理微纳结构粗糙度拉伸性能

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准东高铁煤中伴生矿物对水煤浆成浆性能影响

洁净煤技术 2024年第6期30卷 68-74页

作者：刘啸天王珊文蓉蓉许燕凤高昊阳魏博新疆大学化工学院新疆煤炭清洁转化与化工过程自治区重点实验室新疆维吾尔自治区乌鲁木齐830017

准东黑山矿区将军庙二矿的准东高铁煤储量丰富,是优质动力煤产区,以该煤样为原料煤,考察煤中主要伴生矿物对水煤浆性能影响。用煤炭浮沉分离方法获得不同矿物含量、种类和分布规律的不同密度等级煤样,并对煤样进行成浆性影响评价。经能... 详细信息

准东黑山矿区将军庙二矿的准东高铁煤储量丰富,是优质动力煤产区,以该煤样为原料煤,考察煤中主要伴生矿物对水煤浆性能影响。用煤炭浮沉分离方法获得不同矿物含量、种类和分布规律的不同密度等级煤样,并对煤样进行成浆性影响评价。经能谱仪(EDS)、X射线衍射仪(XRD)和X射线荧光仪(XRF)确定煤样中元素含量及矿物组成。最后利用SPSS软件计算不同矿物元素含量与成浆性能相关性。发现准东高铁煤密度主要集中于1.40~1.50 g/cm^(3),占整体的55.88%,而密度>1.50 g/cm^(3)煤样约占4.88%;黄铁矿、硫酸铁、高岭土和石英石含量随煤样密度增大而增加,密度>1.50 g/cm^(3)煤样中伴生矿物含量高,Al、Si、S和Fe元素含量均达到最大,其中Fe元素质量分数从1.50 g/cm^(3)煤样制备的浆体样品整体过于稀薄,成浆黏度降至320 mPa·s,析水率达9.09%;相关性分析显示,煤中伴生Na、Mg和Ca元素在各个密度等级煤样中分布相对均匀,与成浆性能无明显相关性,而Al、Si、S和Fe元素的含量与成浆黏度和稳定性分别呈现显著和极其显著的负相关,即黄铁矿、硫酸铁、高岭土和石英石质量分数越高,水煤浆黏度、稳定性下降趋势越显著。

关键词：准东高铁煤浮沉分离煤样物性分析水煤浆性能

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固溶和时效处理对铝热法制备Cu-Ti合金组织和性能的影响

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有色金属工程 2024年第5期14卷 1-9页

作者：郑月红何湉楠牛嘉楠高颢洋王娇喇培清兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室兰州730050 兰州理工大学材料科学与工程学院兰州730050

Cu-Ti合金作为导电弹簧,互联接插件等重要元器件的制备材料,其大规模工业制备方法和热处理工艺仍是当前铜合金领域亟需开发和推进的重点。采用具有工艺简单、环保节能、成本低廉等优点的铝热法制备了Ti含量分别为1%、4.5%、10%,即成分... 详细信息

Cu-Ti合金作为导电弹簧,互联接插件等重要元器件的制备材料,其大规模工业制备方法和热处理工艺仍是当前铜合金领域亟需开发和推进的重点。采用具有工艺简单、环保节能、成本低廉等优点的铝热法制备了Ti含量分别为1%、4.5%、10%,即成分区间较大的Cu-Ti合金,且进一步采用固溶和时效处理调控合金的综合性能。结果表明,时效态的Cu-1%Ti和Cu-4.5%Ti合金中Ti元素主要呈固溶状态,只有非常少量尺寸较小的析出相,而Cu-10%Ti合金中存在大量尺寸较大的Cu 4 Ti相析出。随着Ti含量的增加,合金的导电率有明显降低的趋势,而硬度和强度则呈现与之相反的趋势。对于成分相同的合金,相较于固溶状态,时效后导电率先略微下降然后上升,450°C时效4 h后,三个成分合金的导电率均高于固溶态合金;450°C时效2 h后,Cu-1%Ti和Cu-4.5%Ti合金均获得了硬度、强度和延伸率的最大值,Cu-10%Ti合金的硬度和延伸率也获得了极大值,其屈服强度和抗拉强度则是随着时效时间呈略微下降的趋势。

关键词： Cu-Ti合金铝热反应法热处理力学性能导电率

Dynamic Modeling of Key Operating Parameters for Supercritical Circulating Fluidized Bed Units based on Data-Knowledge-Driven Method

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Journal of Thermal Science 2024年第3期33卷 1216-1230页

作者： YU haoyang gao Mingming ZHANG Hongfu CHEN Jiyu LIU Jizhen YUE Guangxi The State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources School of Control and Computer EngineeringNorth China Electric Power UniversityBeijing102206China CHN Energy New Energy Technology Research Institute Co. Ltd.Beijing102209China Department of Energy and Power Engineering Tsinghua UniversityBeijing100084China

To address the pressing need for intelligent and efficient control of circulating fluidized bed(CFB)units,it is crucial to develop a dynamic model for the key operating parameters of supercritical circulating fluidized bed(SCFB)***,data-knowledge-driven dynamic model of bed temperature,load,and main steam pressure of the SCFB unit has been ***,a knowledge-driven method is employed to develop a dynamic model for key operating parameters of SCFB *** model parameters are determined based on the operating data of the unit and continuously optimized in real ***,Bidirectional Long Short-Term Memory combined with Convolutional Neural Network and Attention Mechanism is utilized to build the dynamic model of bed temperature,load,and main steam ***,a collaboration and integration method based on the critic weight method and the variation coefficient method is proposed to establish data-knowledge-driven model of key operating parameters for SCFB *** model displays great accuracy and fitting ability compared with other methods and effectively captures the dynamic characteristics,which can provide a research basis for the design of intelligent flexible control mode of SCFB unit.

关键词： circulating fluidized bed dynamic model data-knowledge-driven method deep learning power plant

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蠲痹汤调控软骨细胞铁死亡治疗骨关节炎

中华实验外科杂志 2024年第8期41卷 1784-1788页

作者：高浩阳贾庆运吴立生王乾孙铭远刘玉兴高万里山东第二医科大学临床医学院潍坊261053 山东第二医科大学附属临沂市人民医院临沂276000

目的通过体外细胞模型, 探讨蠲痹汤对骨关节炎(OA)的作用机制。方法将ATDC5细胞分为4组:正常组、OA组、蠲痹汤组和Fer-1组。OA组加入10 ng/ml白细胞介素(IL)-1β诱导炎症杜尔伯科改良伊格尔(DMEM)培养基;蠲痹汤组加入IL-1β+蠲痹汤诱导... 详细信息

目的通过体外细胞模型, 探讨蠲痹汤对骨关节炎(OA)的作用机制。方法将ATDC5细胞分为4组:正常组、OA组、蠲痹汤组和Fer-1组。OA组加入10 ng/ml白细胞介素(IL)-1β诱导炎症杜尔伯科改良伊格尔(DMEM)培养基;蠲痹汤组加入IL-1β+蠲痹汤诱导炎症DMEM培养基;Fer-1组加入IL-1β+Fer-1诱导炎症DMEM培养基。进行蛋白质印迹法(Western blot)试验检测软骨细胞的肿瘤坏死因子-α(TNF-α)、诱导型一氧化氮合酶(iNOS)、环氧化酶-2(COX-2), Collagen Ⅱ、Aggrecan、基质金属蛋白酶13(MMP-13)、p53、ACSL4、SLC7A11和GPX-4的表达, 使用细胞免疫荧光染色检测GPX-4的表达。利用化学发光法检测软骨细胞的代谢产物丙二醛(MDA)、谷胱甘肽过氧化物酶(GSH)、Fe2+、线粒体内铁的含量。多组比较采用单因素方差分析。结果 Fer-1组和蠲痹汤组的TNF-α(3.282±0.261、2.255±0.253)、iNOS(5.046±0.478、3.443±0.039)、COX-2(3.484±0.333、2.450±0.467)蛋白相对表达水平低于IL-1β组(4.384±0.601、6.863±0.637、4.812±0.496), 差异有统计学意义(t=3.848、7.432、5.579、10.500、4.289、7.629, P<0.05)。Fer-1组和蠲痹汤组的MMP-13(2.738±0.224、4.276±0.663)、p53(3.364±0.898、4.289±0.936)、ACSL4(2.897±0.767、2.776±0.594)蛋白相对表达水平低于IL-1β组(5.779±0.018、7.413±1.635、6.077±0.847), 差异有统计学意义(t=10.640、5.258、4.752、3.666、6.048、6.279, P<0.05)。Fer-1组和蠲痹汤组的Collagen Ⅱ(0.752±0.143、0.609±0.073)、Aggrecan(0.663±0.139、0.570±0.022)、SLC7A11(0.623±0.037、0.400±0.034)、GPX-4(0.686±0.041、0.537±0.065)蛋白相对表达水平高于IL-1β组(0.298±0.049、0.268±0.154、0.097±0.021、0.163±0.063), 差异有统计学意义(t=4.661、3.895、4.631、3.538、23.700、13.660、12.890、9.226, P<0.05)。Fer-1组和蠲痹汤组的GPX-4(15.476±2.519、12.133±0.703)荧光强度高于IL-1β组(5.141±0.153), 差异有统计学意义(t=8.117、5.491, P<0.05)。Fer-1组和蠲痹汤组的线粒体内铁(9.689±2.680、11.043±1.818)荧光强度低于IL-1β组(16.604±3.262), 差异有统计学意义(t=3.675、2.955, P<0.05)。Fer-1组和蠲痹汤组的MDA[(8.755±0.390)、(10.915±0.379) nmol/ml]、Fe2+[(4.200±0.041)、(5.189±0.083) nmol]含量低IL-1β组[(13.130±0.430) nmol/ml、(7.109±0.071) nmol], 差异有统计学意义(t=14.960、7.573、59.230、39.090, P<0.05)。Fer-1组和蠲痹汤组的GSH[(7.215±0.382)、(6.988±1.246) μmol/g prot]含量高于IL-1β组[(4.826±0.426) μmol/g prot], 差异有统计学意义(t=4.240、3.838, P<0.05)。结论蠲痹汤通过调控SLC7A11-GSH-GPX4轴抑制软骨细胞铁死亡减轻炎性反应和细胞外基质降解。

关键词：蠲痹汤铁死亡骨关节炎

Ultrasensitive and stable all graphene field-effect transistor-based Hg^(2+)sensor constructed by using different covalently bonded RGO films assembled by different conjugate linking molecules

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SmartMat 2021年第2期2卷 213-225页

作者： Mingyuan Sun Congcong Zhang Duo Chen Jian Wang Yanchen Ji Na Liang haoyang gao Shanshan Cheng Hong Liu Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong Institute for Advanced Interdisciplinary Research(iAIR)University of JinanJinanChina International School for Optoelectronic Engineering Qilu University of Technology(Shandong Academy of Science)JinanChina Department of Physics School of Physical Science and TechnologyUniversity of JinanJinanChina Department of Chemistry School of ScienceUniversity of TianjinTianjinChina State Key Laboratory of Crystal Materials Shandong UniversityJinanChina

As"molecular bridge,"coupling agents can not only realize the covalent connection of composites,but also affect their properties,thus affecting the properties of devices based on ***,leveraging differences in charge conduction properties of the(3-aminopropyl)trimethoxysilane and 5,10,15,20-tetrakis(4-aminophenyl)-21H,23H-porphine caused by conjugacy structural differences,two kinds of layerby-layer assembled smart carbon materials with different electrical properties are obtained at the same reduction *** two graphene ultrathin films are then“planted”on Si/SiO2 substrates,respectively,as semiconductor layer and source/drain electrodes to fabricate an ultra-stable all-graphene field effect transistor(AG-FET).Enabled by the covalent functionalized configuration and the functionally diverse of coupling agents,the AG-FET obtained by this simple method won the high electrical characteristics,the hole,electron mobility,and the shelflife could reach 3.79 cm2/(V·s),3.78 cm2/(V·s),and 18months,*** addition,good material stability and excellent device structure endow the device exceptional stability,electrical stability,and solvent resistance,improving its application prospect in solution phase sensing/*** characteristics could be used to sense,transduce,and respond to external stimuli,especially in solution phase to monitor the important analytes,such as Hg^(2+)in a flowing sewage *** believe that such easy-to-manufacture AG-FETs with ultrahigh performance and ultrahigh stability could also show great application prospects in other significant fields.

关键词： coupling agent covalent bond field effect transistors Hg^(2+)detection ultra-stable

Biaxial tensile behavior of CoCrFeNi high-entropy alloy under dynamic and proportional loadings

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Chinese Journal of Aeronautics 2024年第9期37卷 475-489页

作者： haoyang LI Liqiang gao Lin QI Yajing FENG Jingyu WANG Yulong LI Qifeng YU School of Aeronautics.Nort/western Polytechnical University Xiana 710072China Shaanxi Key Laboratory of Impact Dynamics and Engineering Applications Northwestern Polytechnical UniversityXian 710072 China School of Civil Aviation Northwestern Polytechnical UniversitySuzhou 215699China NPU Yangzi River Delta Research Institute Suzhou 215400China

The dynamic failure behavior of CoCrFeNi High-Entropy Alloy(HEA)under plane biaxial stress was investigated in *** dynamic biaxial tensile tests were conducted using an Electromagnetic Biaxial Split Hopkinson Tensile Bar(EBSHTB)*** comparison,the quasi-static uniaxial and biaxial tensile tests,as well as dynamic uniaxial tensile tests,were per-formed respectively.A cruciform specimen suitable for large plastic deformation was designed and employed in the *** Finite Element Method(FEM)verified that the improved cruciform specimen could satisfy the basic *** feasibility of the proposed specimen was further confirmed through loading ***,the quasi-static and dynamic yield loci of the HEA in the first quadrant of the principal stress space were *** results indicate that the alloy exhibits obvious strain hardening effect and strain rate strengthening effect,the yield locus and plastic work contours can be accurately described by Hill'48 criterion.

关键词： High-entropy alloys Biaxial tensile test Cruciform specimen Electromagnetic split Hop-kinson bar Digital image correlation

A novel videogrammetry-based full-field dynamic deformation monitoring method for variable-sweep wings

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Acta Mechanica Sinica 2024年第8期40卷 120-132页

作者： Liqiang gao Yan Liu Bin Jiang Zhendong Ge haoyang Li Xiang Guo Tao Suo Qifeng Yu School of Civil Aviation Northwestern Polytechnical UniversityXi’an710072China Shaanxi Key Laboratory of Impact Dynamics and Engineering Application Northwestern Polytechnical UniversityXi’an710072China College of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhen518060China Institute of Intelligent Optical Measurement and Detection Shenzhen UniversityShenzhen518060China

The measurement of wing dynamic deformation in morphing aircraft is crucial for achieving closed-loop control and evaluating structural *** variable-sweep wings with active large deformation,this paper proposes a novel videogrammetric method for full-field dynamic deformation measurement.A stereo matching method based on epipolar geometry constraint and topological constraint is presented to find the corresponding targets between stereo *** addition,a new method based on affine transformation combined with adjacent closest point matching is developed,aiming to achieve fast and automatic tracking of targets in time-series images with large deformation.A calculation model for dynamic deformation parameters is established to obtain the displacement,sweep variable angle,and span *** verify the proposed method,a dynamic deformation measurement experiment is conducted on a variable-sweep wing *** results indicate that the actual accuracy of the proposed method is approximately 0.02%of the measured area(e.g.,0.32 mm in a 1.6 m scale).During one morphing course,the sweep variable angle,the span variation and the displacement increase gradually,and then *** maximum sweep variable angle is 36.6°,and the span variation is up to 101.13 *** overall configuration of the wing surface is effectively reconstructed under different morphing states.

关键词： Morphing aircraft Variable-sweep wing Videogrammetry Large dynamic deformation Target matching and tracking

Si-Miao-Yong-An Decoction alleviates thromboangiitis obliterans by regulating miR-548j-5p/IL-17A signaling pathway

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Chinese Journal of Natural Medicines 2024年第6期22卷 541-553页

作者： CHU Chu SUN Shangwen ZHANG Zhen WU Qi LI haoyang LIANG Gang MIAO Xiuming JIANG Haiqiang gao Yan ZHANG Yunhong WANG Bin LI Xia Innovative Institute of Chinese Medicine and Pharmacy Shandong University of Traditional Chinese MedicineJinan 250355China National Key Laboratory for Innovation and Transformation of Luobing Theory The Key Laboratory of Cardiovascular Remod-eling and Function ResearchChinese Ministry of EducationChinese National Health Commission and Chinese Academy of Medical SciencesDepartment of CardiologyQilu Hospital of Shandong UniversityJinan 250012China School of Clinical and Basic Medical Sciences Shandong First Medical University&Shandong Academy of Medical SciencesJinan 271016China Affiliated Hospital of Shandong University of Traditional Chinese Medicine Jinan 250014China International Business School Tianjin Foreign Studies UniversityTianjin 300204China Institute of Pharmaceutical Research Shandong University of Traditional Chinese MedicineJinan 250355China

Thromboangiitis obliterans(TAO)is a rare,chronic,progressive,and segmental inflammatory disease characterized by a high rate of amputation,significantly compromising the quality of life of ***-Miao-Yong-An decoction(SMYA),a tradition-al prescription,exhibits anti-inflammatory,anti-thrombotic,and various other pharmacological ***,it was fully proved to be effective for TAO therapy,but the specific therapeutic effect of SMYA on TAO has been ***,deep unveiling the mechanism of SMYA in TAO for identifying clinical therapeutic targets is extremely *** this study,we observed elev-ated levels of IL-17A in the peripheral blood mononuclear cells(PBMCs)of TAO patients,whereas the expression of miR-548j-5p was significantly decreased.A negative correlation between the levels of miR-548j-5p and IL-17A was also *** vitro ex-periments showed that overexpression of miR-548j-5p led to a decrease in IL-17A levels,whereas downregulation of miR-548j-5p showed the opposite *** a dual luciferase assay,we confirmed that miR-548j-5p directly targets ***,serum containing SMYA effectively decreased IL-17A levels by increasing the expression of *** importantly,the results of in vivo tests indicated that SMYA mitigated the development of TAO by inhibiting IL-17A through the upregulation of miR-548j-5p in vascular *** conclusion,SMYA significantly enhances the expression of miR-548j-5p,thereby reducing the levels of the target gene IL-17A and alleviating *** research not only identifies novel targets and pathways for the clinical diagnosis and treatment of TAO but also advances the innovation in traditional Chinese medicine through the elucidation of the SMYA/miR-548j-5p/IL-17A regulatory axis in the pathogenesis of TAO.

关键词： Thromboangiitis obliterans IL-17A Inflammation miR-548j-5p Si-Miao-Yong-An Decoction