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| 1 | Application of yolk-shell Fe3O4@N-doped carbon nanochains as highly effective microwave-absorption material显示文摘 | Mingtao Qiao Xingfeng Lei Yong Ma Lidong Tian Xiaowei He Kehe Su Qiuyu Zhang | 2018 | Nano Research2018，11，3： | 26 |
| 2 | On the tuning of electrical and thermal transport in thermoelectrics: an integrated theory–experiment perspective显示文摘During the last two decades,we have witnessed great progress in research on thermoelectrics.There are two primary focuses.One is the fundamental understanding of electrical and thermal transport,enabled by the interplay of theory and experiment;the other is the substantial enhancement of the performance of various thermoelectric materials,through synergistic optimisation of those intercorrelated transport parameters.Here we review some of the successful strategies for tuning electrical and thermal transport.For electrical transport,we start from the classical but still very active strategy of tuning band degeneracy(or band convergence),then discuss the engineering of carrier scattering,and finally address the concept of conduction channels and conductive networks that emerge in complex thermoelectric materials.For thermal transport,we summarise the approaches for studying thermal transport based on phonon–phonon interactions valid for conventional solids,as well as some quantitative efforts for nanostructures.We also discuss the thermal transport in complex materials with chemical-bond hierarchy,in which a portion of the atoms(or subunits)are weakly bonded to the rest of the structure,leading to an intrinsic manifestation of part-crystalline part-liquid state at elevated temperatures.In this review,we provide a summary of achievements made in recent studies of thermoelectric transport properties,and demonstrate how they have led to improvements in thermoelectric performance by the integration of modern theory and experiment,and point out some challenges and possible directions. | Jiong Yang Lili Xi Wujie Qiu Lihua Wu Xun Shi Lidong Chen Jihui Yang Wenqing Zhang Ctirad Uher David J Singh | 2016 | npj Computational Materials2016，，1： | 24 |
| 3 | Full-thickness tissue engineered skin constructed with autogenic bone marrow mesenchymal stem cells显示文摘To explore the feasibility of repairing clinical cutaneous deficiency, autogenic bone marrow mesen-chymal stem cells (BMSCs) were isolated and differentiated into epidermal cells and fibroblasts in vitro supplemented with different inducing factors and biomaterials to construct functional tissue- engineered skin. The results showed that after 72 h induction, BMSCs displayed morphologic changes such as typical epidermal cell arrangement, from spindle shape to round or oval; tonofibrils, melano-somes and keratohyaline granules were observed under a transmission electronic microscope. The differentiated cells expressed epidermal stem cell surface marker CK19 (59.66% ± 4.2%) and epidermal cells differentiation marker CK10. In addition, the induced epidermal cells acquired the anti-radiation capacity featured by lowered apoptosis following exposure to UVB. On the other hand, the collagen microfibrils deposition was noticed under a transmission electronic microscope after differentiating into dermis fibroblasts; RT-PCR identified collagen type I mRNA expression in differentiated cells; radioimmunoassay detected the secretion of interleukin-6 (IL-6) and interleukin-8 (IL-8) (up to 115.06 pg/mL and 0.84 ng/mL, respectively). Further in vivo implanting BMSCs with scaffold material short-ened skin wound repair significantly. In one word, autogenic BMSCs have the potential to differentiate into epidermal cells and fibroblasts in vitro, and show clinical feasibility acting as epidermis-like and dermis-like seed cells in skin engineering. | HE LiJuan, NAN Xue, WANG YunFang, GUAN LiDong, BAI CiXian, SHI ShuangShuang, YUAN HongFeng, CHEN Lin, LIU DaQing & PEI XueTao Laboratory of Stem Cells and Regenerative Medicine, Institute of Blood Transfusion, Academy of Military Medical Sciences, Beijing 100850, China | 2007 | Science China(Life Sciences)2007，50，4： | 16 |
| 4 | Rationalizing phonon dispersion for lattice thermal conductivity of solids显示文摘Lattice thermal conductivity(κL) is one of the most fundamental properties of solids. The acoustic–elastic-wave assumption, proposed by Debye(Debye P. Ann Phys 1912; 344: 789–839), has led to linear phonon dispersion being the most common approximation for understanding phonon transport over the past century. Such an assumption does not take into account the effect of a periodic boundary condition on the phonon dispersion, originating from the nature of periodicity on atomic arrangements. Driven by modern demands on the thermal functionality of materials, with κLranging from ultra-low to ultra-high,any deviation from the Debye approximation in real materials becomes more and more significant. This work takes into account the periodic boundary condition, and therefore rationalizes the phonon dispersion to be more realistic. This significantly improves the precision for quickly predicting κLwithout any fitting parameters, as demonstrated in hundreds of materials, and offers a theoretical basis rationalizing κLto be lower than the minimum currently accepted based on the Debye dispersion. This work paves the way for designing solids with expected κLand particularly inspires the advancement of low-κLmaterials for thermal energy applications. | Zhiwei Chen Xinyue Zhang Siqi Lin Lidong Chen Yanzhong Pei | 2018 | National Science Review2018，5，6： | 12 |
| 5 | Human papillomavirus DNA and P16~(INK4A) expression in concurrent esophageal and gastric cardia cancers显示文摘AIM:To investigate the relationship between human papillomavirus (HPV) infection and concurrent esophagus and gastric cardia cancer from the same patient (CC) and examine the significance of P16 INK4A protein expression.METHODS:Polymerase chain reaction was used to detect the presence of HPV type16 (HPV16).The expression of P16 INK4A protein was detected using immunohistochemistry.RESULTS:Among the CC specimens,HPV16-DNA was found in eight cases of esophageal squamous cell carcinoma (ESCC) and five cases of gastric cardia adenocarcinoma (GCA),respectively (47% vs 29%),and two of both ESCC and GCA.P16 INK4A was highly expressed in both ESCC and GCA.In the HPV-associated positive CC,higher P16 INK4A expression was observed in the GCA than in the ESCC (75% vs 25%,P < 0.05).CONCLUSION:HPV16 as a correlated risk factor may play an important role in the development of ESCC and GCA.P16 INK4A may be a screening index in the HPVassociated carcinoma of gastric cardia. | Guang-Cheng Ding,Tao Guo,Department of Gastroenterology,The First Affiliated Hospital and The Fifth Affiliated Hospital,Zhengzhou University,Zhengzhou 450052,Henan Province,China Jing-Li Ren,Xin Song,Sheng-Li Zhou,Zong-Min Fan,LiDong Wang,Henan Key Laboratory for Esophageal Cancer Research,Department of Gastroenterology,The First Affiliated Hospital,College of Basic Medicine,Zhengzhou University,Zhengzhou 450052,Henan Province,China Fu-Bao Chang,Department of Thoracic Surgery,Linzhou Center Hospital,Linzhou 456500,Henan Province,China Ji-Lin Li,Department of Pathology,Yaocun Esophageal Cancer Hospital,Linzhou 456500,Henan Province,China Ling Yuan,Department of Oncoradiotherapy,Henan Province Tumor Hospital,Zhengzhou 450003,Henan Province,China Yi Zeng,Institute of Virology,Chinese Academy of Preventive Medicine,Beijing 100052,China | 2010 | World Journal of Gastroenterology2010，16，46： | 11 |
| 6 | Development and applications of the ABEEM fluctuating charge molecular force field in the ion-containing systems显示文摘The microscopic mechanisms of ion hydration and ion selectivity in biomolecular systems are long-standing research topics,in which the difficulty is how to reasonably and accurately describe the ion-water and ion-biomolecule interactions.This paper summarizes the development and applications of the atom-bond electronegativity equalization fluctuating charge force field model,ABEEM/MM,in the investigations of ion hydration,metalloproteins and ion-DNA bases systems.Based on high-level quantum chemistry calculations,the parameters were optimized and the molecular potential functions were constructed and applied to studies of structures,activities,energetics,and thermodynamic and kinetic properties of these ion-containing systems.The results show that the performance of ABEEM/MM is generally better than that of the common force fields,and its accuracy can reach or approach that of the high-level ab initio MP2 method.These studies provide a solid basis for further investigations of ion selectivity in biomolecular systems,the structures and properties of metalloproteins and other related ion-containing systems. | GONG LiDong | 2012 | Science China Chemistry2012，55，12： | 11 |
| 7 | Experimental and mechanism studies on simultaneous desulfurization and denitrification from flue gas using a flue gas circulating fluidized bed显示文摘The oxidizing highly reactive absorbent was prepared from fly ash,industry lime,and an oxidizing additive M.Experiments of simultaneous desulfurization and denitrification were carried out in a flue gas circulating fluidized bed(CFB).The effects of influencing factors and calcium availability were also investigated on the removal efficiencies of desulfurization and denitrification.Removal efficiencies of 95.5%for SO2 and 64.8%for NO were obtained respectively under the optimal experimental conditions. The component of the spent absorbent was analyzed with chemical analysis methods.The results in- dicated that more nitrogen species appeared in the spent absorbent except sulfur species.A scanning electron microscope(SEM)and an accessory X-ray energy spectrometer were used to observe micro-properties of the samples,including fly ash,oxidizing highly reactive absorbent and spent absorbent.The simultaneous removal mechanism of SO2 and NO based on this absorbent was pro- posed according to the experimental results. | ZHAO Yi XU PeiYao SUN XiaoJun WANG LiDong | 2007 | Science China Chemistry2007，50，1： | 10 |
| 8 | Underdetermined Blind Source Separation of Adjacent Satellite Interference Based on Sparseness显示文摘The problem of underdetermined blind source separation of adjacent satellite interference is proposed in this paper. Density Clustering algorithm(DC-algorithm) presented in this article is different from traditional methods. Sparseness representation has been applied in underdetermined blind signal source separation. However, some difficulties have not been considered, such as the number of sources is unknown or the mixed matrix is ill-conditioned. In order to find out the number of the mixed signals, Short Time Fourier Transform(STFT) is employed to segment received mixtures. Then, we formulate the blind source signal as cluster problem. Furthermore, we construct Cost Function Pair and Decision Coordinate System by using density clustering. At the end of this paper, we discuss the performance of the proposed method and verify the novel method based on several simulations. We verify the proposed method on numerical experiments with real signal transmission, which demonstrates the validity of the proposed method. | Chengjie Li Lidong Zhu Zhongqiang Luo | 2017 | China Communications2017，14，4： | 10 |
| 9 | Precious Fossil-Bearing Beds of the Lower Cretaceous Jiufotang Formation in Western Liaoning Province, China显示文摘在西方的辽宁基于分进更低的白垩纪 JiufotangFormation 的三个成员,这篇论文主要处理宝贵石块鸟的部门和关联 -- 并且在 Dachengzi, Chaoyang, Dapingfang-Meileyingzi 和 Fuxin-Yixian 的形成的忍受爬行动物的床盆。在他们之中,在 theDachengzi 盆的宝贵的忍受石块的床可以作为第二个成员的 Xidagou 床和第三个成员的 YangcaogoudonggouBed 被认出;那些可以作为第二个成员的 Shangheshou 床和第三个成员的 Dongpochi 床在 Chaoyang 盆被证实;那些在 Dapingfang-Meileyingzi Basinare 作为第二个成员,的 Lamagou 床 Huanghuagou 床更低第三张成员和 theYuanjiawa 床上面第三个成员;并且那些作为第二个成员的 theTuanshanzi 床和第三个成员的 Pijiagou 床在 Fuxin-Yixian 盆被列出。因为这些盆清楚地被分开,鸟和爬行动物石块主要是新类和种,我们有篷乱是的联系石块 ostracod 集合相关,并且相关的索引有 theShangheshou 床的 Xidagou 床和 Lamagou 床有 YangcaogoudonggouBed 的 Yuanjiawa 床和 Pijiagou 床。首先,我们在西方的辽宁建立了 Jiufotang 形成的宝贵的忍受石块的床的顺序。他们被代表由在登上顺序,第二个成员,的 theXidagou 床 Huanghuagou 床更低第三个成员,和 YuanjiawaBed 上面第三个成员。显然,这个工作在中间的早白垩纪的时期期间在鸟和恐龙的 time-spacedistribution 和放射上为学习有意义。 | ZHANG Lijun YANG Yajun ZHANG Lidong GUO Shengzhe WANG Wuli ZHENG Shaolin | 2007 | Acta Geologica Sinica(English Edition)2007，81，3： | 9 |
| 10 | Experimental measurement of the electrical conductivity of single crystal olivine at high temperature and high pressure under different oxygen fugacities显示文摘At 1.0-4.0 GPa and 1123-1473 K and under oxygen fugacity-controlled conditions (Ni + NiO, Fe + Fe3O4, Fe + FeO and Mo+ M0O2 buffers), a YJ-3000t Model six-anvil solid high-pressure apparatus and a Sarltron-1260 Impedance/Gain-Phase analyzer were employed to conduct an in situ measurement of the electrical conductivity of single crystal olivine. Experimental results showed that: (1) within the range of experimentally selected frequencies (103-106 Hz), the electrical conductivity of the sample is of great dependence on the frequency; (2) with the rise of temperature ( T), the electrical conductivity (σ) will increase, and the Arrenhius linear relationship is established between lgσ and 1/T; (3) under the control of oxygen buffer Fe+ Fe3O4, with the rise of pressure, the electrical conductivity tends to decrease whereas the activation enthalpy and independent-of-temperature preexponential factor tend to increase, with the activation energy and activation volume of the sample estimated at (1. 25 ± 0.08) eV and (0.105 ±0.025) cm3/mol, respectively; (4) under given pressure and temperature conditions, the electrical conductivity tends to increase whereas the activation energy tends to decrease with increasing oxygen fugacity; and ( 5) the mechanism of electrical conduction of small polarons can provide insight into the behavior of electrical conduction of olivine under high pressure and high temperature. | DAI Lidong LI Heping LIU Congqiang CUI Tongdi SHAN Shuangming YANG Changjun LIU Qingyou DENG Heming | 2006 | Progress in Natural Science:Materials International2006，16，4： | 9 |
| 11 | Soybean AP1 homologs control flowering time and plant height显示文摘Flowering time and plant height are key agronomic traits that directly affect soybean(Glycine max)yield.APETALA1(AP1)functions as a class A gene in the ABCE model for floral organ development,helping to specify carpel,stamen,petal,and sepal identities.There are four AP1 homologs in soybean,all of which are mainly expressed in the shoot apex.Here,we used clustered regularly interspaced short palindromic repeats(CRISPR)–CRISPR-associated protein 9 technology to generate a homozygous quadruple mutant,gmap1,with loss-of-function mutations in all four GmAP1 genes.Under short-day(SD)conditions,the gmap1 quadruple mutant exhibited delayed flowering,changes in flower morphology,and increased node number and internode length,resulting in plants that were taller than the wild type.Conversely,overexpression of GmAP1a resulted in early flowering and reduced plant height compared to the wild type under SD conditions.The gmap1 mutant and the overexpression lines also exhibited altered expression of several genes related to flowering and gibberellic acid metabolism,thereby providing insight into the role of GmAP1 in the regulatory networks controlling flowering time and plant height in soybean.Increased node number is the trait with the most promise for enhancing soybean pod number and grain yield.Therefore,the mutant alleles of the four AP1 homologs described here will be invaluable for molecular breeding of improved soybean yield. | Liyu Chen Haiyang Nan Lingping Kong Lin Yue Hui Yang Qingsong Zhao Chao Fang Haiyang Li Qun Cheng Sijia Lu Fanjiang Kong Baohui Liu Lidong Dong | 2020 | Journal of Integrative Plant Biology2020，62，12： | 9 |
| 12 | Transitivity, mixing and chaos for a class of set-valued mappings显示文摘Consider the continuous map f: X → X and the continuous map (f-) of K(X)into itself induced by f, where X is a metric space and K(X) the space of all non-empty compact subsets of X endowed with the Hausdorff metric. According to the questions whether the chaoticity of f implies the chaoticity of (f-) posed by Román-Flores and when the chaoticity of f implies the chaoticity of (f-)posed by Fedeli,we investigate the relations between f and (f-) in the related dynamical properties such as transitivity, weakly mixing and mixing etc.And by using the obtained results,we give the satisfied answers to Román-Flores's question and Fedeli's question. | LIAO Gongfu, WANG Lidong & ZHANG Yucheng Institute of Mathematics, Jilin University, Changchun 130012, China Institute of Nonlinear Information Technology, Dalian Nations University, Dalian 116600, China Department of Mathematics, University of Science and Technology of China, Hefei 230026, China | 2006 | Science China Mathematics2006，49，1： | 8 |
| 13 | Experimental study on vibration suppression of gear shaft misalignment with ISFD显示文摘Misalignment faults in gear systems lead to violent vibration and noise, shortening the life of equipment. The aim of this work is the demonstration of vibration suppression of parallel-misaligned gear shafts using an integral squeeze film damper(ISFD). Using a first grade spur gear in engineering for reference, an open first-grade spur gear system is built and the vibration characteristics of the gear system with rigid supports and ISFD elastic damping supports are studied under different degrees of misalignment. The experimental results show that ISFD supports have excellent damping and vibration attenuation characteristics, which have improved control of the gear system vibration in horizontal, vertical and axial directions under different degrees of misalignment. This work shows that an ISFD structure can effectively suppress vibration of characteristic frequency components and resonance modulation frequency components. The test results provide evidence for the application of ISFD in vibration control of gear shaft misalignment faults in engineering. | 路凯华 He Lidong Zhang Yipeng Chen Zhao Yan Wei | 2019 | High Technology Letters2019，25，1： | 8 |
| 14 | Comparative study on CO_2 emissions from different types of alpine meadows during grass exuberance period显示文摘Potentilla fruticosascrub, Kobresia humilismeadow and Kobresia tibeticameadow are widely distributed on the Qinghai-Tibet Plateau. During the grass exuberance period from 3 July to 4 September, based on close chamber-GC method, a study on CO 2 emissions from different treatments was conducted in these meadows at Haibei research station, CAS. Results indicated that mean CO 2 emission rates from various treatments were 672.09±152.37 mgm -2 h -1 for FC (grass treatment); 425.41±191.99 mgm -2 h -1 for FJ (grass exclusion treatment); 280.36±174.83 mgm -2 h -1 for FL (grass and roots exclusion treatment); 838.95±237.02 mgm -2 h -1 for GG (scrub+grass treatment); 528.48±205.67 mgm -2 h -1 for GC (grass treatment); 268.97±99.72 mgm -2 h -1 for GL (grass and roots exclusion treatment); and 659.20±94.83 mgm -2 h -1 for LC (grass treatment), respectively (FC, FJ, FL, GG, GC, GL, LC were the Chinese abbreviation for various treatments). Furthermore, Kobresia humilismeadow, Potentilla fruticosascrub meadow and Kobresia tibeticameadow differed greatly in average CO 2 emission rate of soil-plant system, in the order of GG>FC>LC>GC. Moreover, in Kobresia humilismeadow, heterotrophic and autotrophic respiration accounted for 42% and 58% of the total respiration of soil-plant system respectively, whereas, in Potentilla fruticosascrub meadow, heterotrophic and autotrophic respiration accounted for 32% and 68% of total system respiration from GG; 49% and 51% from GC. In addition, root respiration from Kobresia humilismeadow approximated 145 mgCO 2 m -2 h -1 , contributed 34% to soil respiration. During the experiment period, Kobresia humilismeadow and Potentilla fruticosascrub meadow had a net carbon fixation of 111.11 gm -2 and 243.89 gm -2 , respectively. Results also showed that soil temperature was the main factor which influenced CO 2 emission from alpine meadow ecosystem, significant correlations were found between soil temperature at 5 cm depth and CO 2 emission from GG, GC, FC and FJ treatments. In addition, soil moisture may be the inhibitory factor of CO 2 emission from Kobresia tibeticameadow, and more detailed analyses should be done in further research. | HUQiwu CAOGuangmin WUQin LIDong WANGYuesi | 2004 | Journal of Geographical Sciences2004，14，2： | 8 |
| 15 | Preparation of nano-sized Bi_2Te_3 thermoelectric material powders by cryogenic grinding | Xiaozong Chen a, Leifeng Liu b, Yuan Dong a, Lianjun Wang a, Lidong Chen c, Wan Jiang a, a State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, 2999 people of North Road, Shanghai 201620, PR China b Department of Materials and Environmental Chemistry, Stockholm University, SE-106 91 Stockholm, Sweden c Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, PR China | 2012 | Progress in Natural Science:Materials International2012，22，3： | 8 |
| 16 | Methane aromatization in the absence of oxygen over extruded and molded MoO_3/ZSM-5 catalysts:Influences of binder and molding method显示文摘The influences of binder and molding method on the catalytic performance of methane aromatization in the absence of O2 over MoO3/ZSM-5 catalysts were investigated.SEM,NH3-TPD,FT-IR of adsorbed pyridine,N2 adsorption-desorption,cyclohexane adsorption and XPS were employed to characterize the physical and chemical properties of the catalysts.It was found that SiO2 was a suitable binder for the catalyst due to its appropriate weak acidity.The laminar catalyst comprising of an inert spherical core and a MoO3/ZSM-5 laminar shell with 0.1 0.2 mm in thickness showed a better catalytic performance than the extruded catalyst.The improved activity of the laminar catalyst could be attributed to the easy carbonization of Mo species and the quick removal of reaction products from the catalyst surface. | Dongmei Ren Xiangsheng Wang Gang Li Xiaojing Cheng Huayun Long Lidong Chen | 2010 | Journal of Natural Gas Chemistry2010，19，6： | 7 |
| 17 | Electroacupuncture diminishes P2X_2 and P2X_3 purinergic receptor expression in dorsal root ganglia of rats with visceral hypersensitivity显示文摘Electroacupuncture at Shangjuxu (ST37) and Tianshu (ST25) can improve visceral hypersensitivity in rats. Colorectal distension was used to establish a rat model of chronic visceral hypersensitivity. Immunohistochemistry was used to detect P2X2 and P2X3 receptor expression in dorsal root ganglia from rats with chronic visceral hypersensitivity. Results demonstrated that abdominal withdrawal reflex scores obviously increased following establishment of the model, indicating visceral hypersensitivity. Simultaneously, P2X2 and P2X3 receptor expression increased in dorsal root ganglia. After bilateral electroacupuncture at Shangjuxu and Tianshu, abdominal withdrawal reflex scores and P2X2 and P2X3 receptor expression decreased in rats with visceral hypersensitivity. These results indicated that electroacupuncture treatment improved visceral hypersensitivity in rats with irritable bowel syndrome by reducing P2X2 and P2X3 receptor expression in dorsal root ganglia. | Zhijun Weng Luyi Wu Yuan Lu Lidong Wang Linying Tan Ming Dong Yuhu Xin | 2013 | Neural Regeneration Research2013，8，9： | 7 |
| 18 | A class of primitive substitutions and scrambled sets显示文摘Consider the subshifts induced by constant-length primitive substitutions on two symbols. By investigating the equivalent version for the existence of Li-Yorke scrambled sets and by proving the non-existence of Schweizer-Smítal scrambled sets, we completely reveal for this class of subshifts the chaotic behaviors possibly occurring in the sense of Li-Yorke and Schweizer-Smítal. | LIAO GongFu FAN QinJie WANG LiDong | 2008 | Science China Mathematics2008，51，3： | 7 |
| 19 | Early Uplift History of the Tibetan Plateau:Records from Paleocurrents and Paleodrainage in the Hoh Xil Basin显示文摘摘要:在领域工作收集的 Paleocurrent 指示物数据被用来在北西藏的高原在 Hoh Xil 盆学习早新生代地区性的 paleodrainage 模式。paleocurrent 方向始新世 Fenghuoshan 组显然证明流动是向北方与一个单向性的疏开模式。这可能在起始的盆免职时期期间反映 Qiangtang 地面的 uplift 并且显示 Tanggula Moutains 在至少作为地志的高地发生了始新世。渐新世 Yaxicuo 组的 Paleoflows 对北方主导地面向然后在它的迟了的免职期间向东流动了。Yaxicuo 组的 paleodrainage 模式的这地区性的可变性被解释从横向的河记录沉积的疏开风格到纵的河系统。渐新世山妨碍了由的 Kunlun 高举,这被推断向北方,到 orogenic 的 paleoflows 和创造的纵的河系统平行系上带子。paleodrainage 模式的时间、空间的变化建议西藏的高原的北边界在早新生代期间位于 Hoh Xil 区域,它的 uplift 整个时间向北进行了。 | YI Haisheng WANG Chengshan SHI Zhiqiang LIN Jinhui ZHU Lidong | 2008 | Acta Geologica Sinica(English Edition)2008，82，1： | 7 |
| 20 | Effect of Ball Milling on the Defeat of Few-Layer Graphene and Properties of Copper Matrix Composites显示文摘Graphene-reinforced copper composites recently have attracted more attention, since they exhibited excellent mechanical properties and could be used widely in many fields. Few-layer graphene(FLG) and copper powder were mixed by ball milling to produce homogeneous composite powders. Then, FLG-reinforced copper composites(FLG/Cu) were fabricated by spark plasma sintering(SPS) using the composite powders with a FLG volume fraction of 2.4 vol%. The effects of the rotating speed and the time of ball milling were analyzed based on the microstructure evolution and properties of the FLG/Cu composites. Obvious strengthening effect of FLG was found for the composites, and the conductance of the composite reaches 70.4% of IACS. The yield strength of the composite produced by ball milling at a speed of 100 r/min for 4 h is 376 MPa, which is 2.5 times higher than that of copper and higher than that of copper composite enhanced by 5 vol% CNTs(360 MPa). The defects produced in FLG with the increase of rotating speed and time could reduce the mechanical and conductive properties of the composites. | Ye Cui Lidong Wang Bin Li Guojian Cao Weidong Fei | 2014 | Acta Metallurgica Sinica(English Letters)2014，27，5： | 6 |
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