|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Numerical simulation and experimental verification on downwash air flow of six-rotor agricultural unmanned aerial vehicle in hover显示文摘Recently,multi-rotor unmanned aerial vehicle(UAV)becomes more and more significantly irreplaceable in the field of plant protection against diseases,pests and weeds of crops.The easy takeoff and landing performance,hover function and high spraying efficiency of UAV are urgently required to spray pesticide for crop timely and effectively,especially in dispersed plots and hilly mountains.In such situations,the current researches about UAV spray application mainly focus on studying the influence of the UAV spraying parameters on the droplet deposition,such as operation height,operation velocity and wind velocity.The deposition and distribution of pesticide droplets on crops which depends on installation position of nozzle and airflow distribution characteristics of UAV are directly related to the control effect of pesticide and crop growth in different growth periods.As a preliminary step,this study focuses on the dynamic development law and distribution characteristics of the downwash air flow for the SLK-5 six-rotor agricultural UAV.Based on compressible Reynolds-averaged Navier-Stokes(RANS)equations with an RNG k-εturbulence model and dynamic mesh technology,the efficient three-dimensional computational fluid dynamics(CFD)method was established to analyze the flow field distribution characteristics of UAV in hover.Then the unsteady interaction flow field of the wing was investigated in detail.The downwash wind speed of the marked points for the SLK-5 UAV in hover was also tested by weather tracker.It was found that the maximum velocity value of the downwash flow was close to 10 m/s;the z-direction velocity was the main body of the wind velocity in the downwash airflow,and the comparison of the wind velocity experiment test and simulation showed that the relative error was less than 12%between the experimental and simulated values of the z-direction velocity at the marked points.Then the flow characteristics of the longitudinal and cross section were analyzed in detail,the results obtained can be used as a reference for drift and sedimentation studies for multi-rotor unmanned aerial vehicle. | Yang Fengbo Xue Xinyu Zhang Ling Sun Zhu | 2017 | International Journal of Agricultural and Biological Engineering2017，10，4： | 28 |
| 2 | Bone marrow mesenchymal stem cell therapy in ischemic stroke: mechanisms of action and treatment optimization strategies显示文摘Animal and clinical studies have confirmed the therapeutic effect of bone marrow mesenchymal stem cells on cerebral ischemia, but their mechanisms of action remain poorly understood. Here, we summarize the transplantation approaches, directional migration, differentiation, replacement, neural circuit reconstruction,angiogenesis, neurotrophic factor secretion, apoptosis, immunomodulation, multiple mechanisms of action,and optimization strategies for bone marrow mesenchymal stem cells in the treatment of ischemic stroke.We also explore the safety of bone marrow mesenchymal stem cell transplantation and conclude that bone marrow mesenchymal stem cell transplantation is an important direction for future treatment of cerebral ischemia. Determining the optimal timing and dose for the transplantation are important directions for future research. | Guihong Li Fengbo Yu Ting Lei Haijun Gao Peiwen Li Yuxue Sun Haiyan Huang Qingchun Mu | 2016 | Neural Regeneration Research2016，11，6： | 22 |
| 3 | Vehicle Active Steering Control Research Based on Two-DOF Robust Internal Model Control显示文摘Because of vehicle's external disturbances and model uncertainties,robust control algorithms have obtained popularity in vehicle stability control.The robust control usually gives up performance in order to guarantee the robustness of the control algorithm,therefore an improved robust internal model control(IMC) algorithm blending model tracking and internal model control is put forward for active steering system in order to reach high performance of yaw rate tracking with certain robustness.The proposed algorithm inherits the good model tracking ability of the IMC control and guarantees robustness to model uncertainties.In order to separate the design process of model tracking from the robustness design process,the improved 2 degree of freedom(DOF) robust internal model controller structure is given from the standard Youla parameterization.Simulations of double lane change maneuver and those of crosswind disturbances are conducted for evaluating the robust control algorithm,on the basis of a nonlinear vehicle simulation model with a magic tyre model.Results show that the established 2-DOF robust IMC method has better model tracking ability and a guaranteed level of robustness and robust performance,which can enhance the vehicle stability and handling,regardless of variations of the vehicle model parameters and the external crosswind interferences.Contradiction between performance and robustness of active steering control algorithm is solved and higher control performance with certain robustness to model uncertainties is obtained. | WU Jian LIU Yahui WANG Fengbo BAO Chunjiang SUN Qun ZHAO Youqun | 2016 | Chinese Journal of Mechanical Engineering2016，29，4： | 11 |
| 4 | Effects of Rice-Fish Co-culture on Oxygen Consumption in Intensive Aquaculture Pond显示文摘Rice-fish co-culture has gained increasing attention to remediate the negative environmental impacts induced by intensive aquaculture. However, the effect of rice-fish co-culture on oxygen depletion has rarely been investigated. We constructed a rice-fish co-culture system in yellow catfish(Pelteobagrus fulvidraco) and freshwater shrimp(Macrobrachium nipponense) ponds using a new high-stalk rice variety, and conducted a field experiment to investigate the effect of rice-fish co-culture on water parameters and oxygen consumption. The results showed that rice-fish co-culture reduced the nutrients(total nitrogen, ammonia-N, total phosphorous and potassium) and the dissolved oxygen content in fish and shrimp ponds. However, they showed similar seasonal change of dissolved oxygen in the water of fish and shrimp ponds. Rice-fish co-culture reduced the total amount of oxygen consumption and optimized the oxygen consumption structure in pond. The respiration rates in water and sediment were significantly reduced by 66.1% and 31.7% in the catfish pond, and 64.4% and 38.7% in the shrimp pond, respectively, by additional rice cultivation. Rice-fish co-culture decreased the proportions of respiration in sediment and water, and increased the proportion of fish respiration. These results suggest that rice-fish co-culture is an efficient way to reduce hypoxia in intensive culture pond. | LI Fengbo SUN Zhiping QI Hangying ZHOU Xiyue XU Chunchun WU Dianxin FANG Fuping FENG Jinfei ZHANG Ning | 2019 | Rice science2019，26，1： | 4 |
| 5 | Mechanical and biocompatible properties of polymer-infiltrated-ceramic-network materials for dental restoration显示文摘Dental restorative materials with high mechanical properties and biocompatible performances are promising.In this work,polymer-infiltrated-ceramic-network materials(PICNs)were fabricated via infiltrating polymerizable monomers into porous ceramic networks and incorporated with hydroxyapatite nano-powders.Our results revealed that the flexural strength can be enhanced up to 157.32 MPa,and elastic modulus and Vickers hardness can be achieved up to 19.4 and 1.31 GPa,respectively,which are comparable with the commercial computer-aided design and computer-aided manufacturing(CAD/CAM)blocks.Additionally,the adhesion and spreading of rat bone marrow mesenchymal stem cells(r BMSCs)on the surface of such materials can be improved by adding hydroxyapatite,which results in good biocompatibility.Such PICNs are potential applicants for their application in the dental restoration. | Bencang CUI Ranran ZHANG Fengbo SUN Qian DING Yuanhua LIN Lei ZHANG Cewen NAN | 2020 | Journal of Advanced Ceramics2020，9，1： | 1 |
| 6 | Effects of pressure on CO 2 reforming of CH 4 over carbonaceous catalyst显示文摘 | Yongfa Zhang Guojie Zhang Bingmo Zhang Fengbo Guo Yaling Sun | 2011 | Chemical Engineering Journal2011，，2： | 1 |
| 7 | Ultrasound-driven BaTiO_(3) nanorobots patching immunologic barrier to cure chronic rheumatoid arthritis显示文摘The disruption and reconstruction of the TREM2^(+) tissue resident macrophage(TRM)barrier on the surface of synovial lining play a key role in the activation and'remission'of rheumatoid arthritis(RA),which engender the prediction of this immunologic barrier as a potential driver for the achievement of'cure'in RA.However,strategies to promote the reconstruction of this barrier have not been reported,and the effect of patching this barrier remains unidentified.On the other hand,appropriate piezoelectric stimulation can reprogram macrophages,which has never been exerted on this barrier TRM yet.Herein,we design piezoelectric tetragonal BaTiO_(3)(BTO)ultrasound-driven nanorobots(USNRs)by the solvothermal synthesis method,which demonstrates satisfactory electro-mechanical conversion effects,paving the way to generate controllable electrical stimulation under ultrasound to reprogram the barrier TRM by minimally invasive injection into joint cavity.It is demonstrated that the immunologic barrier could be patched by this USNR effectively,thereby eliminating the hyperplasia of vessels and nerves(HVN)and synovitis.Additionally,TREM2 deficiency serum-transfected arthritis(STA)mice models are applied and proved the indispensable role of TREM2 in RA curing mediated by USNR.In all,our work is an interesting and important exploration to expand the classical tetragonal BTO nanoparticles in the treatment of autoimmune diseases,providing a new idea and direction for the biomedical application of piezoelectric ceramics. | Le Jiang Yifan Wang Chunlin Liu Nan Xu Wenshuo Li Lei Wang Yixian Wu Jingyun Wang Zhijun He Fengbo Sun Lingyun Zhao Qiong Wu Xiumei Wang Huihui Yuan Xiaohui Wang Xiaodan Sun | 2023 | Journal of Advanced Ceramics2023，12，5： | 0 |
| 8 | Network Invulnerability Enhancement Algorithm Based on WSN Closeness Centrality显示文摘Wireless Sensor Network(WSN)is an important part of the Internet of Things(IoT),which are used for information exchange and communication between smart objects.In practical applications,WSN lifecycle can be influenced by the unbalanced distribution of node centrality and excessive energy consumption,etc.In order to overcome these problems,a heterogeneous wireless sensor network model with small world characteristics is constructed to balance the centrality and enhance the invulnerability of the network.Also,a new WSN centrality measurement method and a new invulnerability measurement model are proposed based on the WSN data transmission characteristics.Simulation results show that the life cycle and data transmission volume of the network can be improved with a lower network construction cost,and the invulnerability of the network is effectively enhanced. | Qian Sun Fengbo Yang Xiaoyi Wang Jing Li Jiping Xu Huiyan Zhang Li Wang Jiabin Yu Xiao Peng Ruichao Wang | 2022 | Computers, Materials & Continua2022，，11： | 0 |
| 9 | Optimal Deployment of Heterogeneous Nodes to Enhance Network Invulnerability显示文摘Wireless sensor networks(WSN)can be used in many fields.In wireless sensor networks,sensor nodes transmit data in multi hop mode.The large number of hops required by data transmission will lead to unbalanced energy consumption and large data transmission delay of the whole network,which greatly affects the invulnerability of the network.Therefore,an optimal deployment of heterogeneous nodes(ODHN)algorithm is proposed to enhance the invulnerability of the wireless sensor networks.The algorithm combines the advantages of DEEC(design of distributed energy efficient clustering)clustering algorithm and BAS(beetle antenna search)optimization algorithm to find the globally optimal deployment locations of heterogeneous nodes.Then,establish a shortcut to communicate with sink nodes through heterogeneous nodes.Besides,considering the practical deployment operation,we set the threshold of the mobile location of heterogeneous nodes,which greatly simplifies the deployment difficulty.Simulation results show that compared with traditional routing protocols,the proposed algorithm can make the network load more evenly,and effectively improve energy-utilization and the fault tolerance of the whole network,which can greatly improve the invulnerability of the wireless sensor networks. | Qian Sun Fengbo Yang Xiaoyi Wang Jiping Xu Huiyan Zhang Li Wang Jiabin Yu Xiao Peng Ruichao Wang | 2022 | Computers, Materials & Continua2022，，11： | 0 |
| 10 | Research on the Bending Impact Resistance and Transverse Fracture Characteristics of Bamboo under the Action of Falling Weight显示文摘Drop weight impact tester was used to accurately measure the bending impact resistance of various parts of Phyllostachys edulis,commonly known as moso bamboo,with a growth cycle of 3–8 years.Cellulose crystallinity in the bottom(B),middle(M)and top(T)of bamboo at different ages was calculated using peak height analysis in X-ray diffraction.Heatmap of Spearman correlation analysis was used to represent the correlation between chemical composition and impact mechanics.The breaking load(BL),fracture energy(FE)and impact deflection(ID)of 3–8-year-old bamboo were found to be in the range of~670–2120 N,~5.17–15.55 J,and~3.60–~17.76 mm,respectively.As the growth period of bamboo rises,the cellulose crystallinity at the B and T decreases first and then increases,while that for the M increases first and then remains stable.Similarly,the bending impact performance of bamboo was found to become stable with its growth and age.The flexural impact and toughness of the 4-year-old bamboo base material were better than other specimens.The enhancement in the bending impact properties of bamboo at different growth periods was influenced by the lignin content,while the value of FE was mainly positively correlated with ash,cold and hot water extracts and benzyl alcohol content.However the content of holocellulose and pentosan,air-dry density and,base density negatively influenced the FE.With the change in the height of the bamboo,the correlation between its impact mechanical properties and chemical composition gradually decreased.This study provides data support and theoretical basis for the age-appropriate thinning and application of moso bamboo. | Hao Jia Benhua Fei Changhua Fang Huanrong Liu Xiubiao Zhang Xinxin Ma Fengbo Sun | 2023 | Journal of Renewable Materials2023，11，1： | 0 |
| 11 | Novel Gas-tight Multi-sampler for Discrete Deep-sea Water显示文摘The issues of how to quickly collect seawater samples and of how to make sure that those samples truly reflect the in-situ information on gas composition and concentration have therefore become a hot but difficult topic in the field of ocean technology.Most conventional seawater samplers only focus on collecting seawater itself,but take little consideration on gas preservation.A set of new oceanographic tools are presented for ocean resource exploration such as hydrothermal sulfide and gas hydrate,and for investigations on the processes and mechanisms of marine physical,chemical and biological evolutions.A gas-tight deep-sea water sampling system(GTWSS) is designed for the collection of deep-sea geochemical samples.This set of tools mainly consists of a conductivity temperature depth profiler(CTD),release devices and gas-tight deep-sea water samplers(GTWS).The GTWS is able to hold the gases in deep-sea water samples tightly,providing in-situ information on gas contents in the seawater samples and can be deployed on a routine wire-deployed CTD sampler for multi-layer discrete sampling of gas-tight seawater.Sea trials are performed successfully in 2008 and 2009,on a research vessel named HaiYang Si Hao in South China Sea,with the deepest trial depth 3 930 m.GTWSS is capable of quickly sampling 12 discrete gas-tight seawater samples(8.3 L per sample) during its single deployment.The head space method is employed to separate the gases from the seawater samples immediately after recovery of the seawater samples on the vessel.Field geochemical analysis is carried out by gaseous hydrocarbon sensors and an infrared gas analyzer.Results show that the concentrations of CH4 and CO2 in the seawater sampled by GTWSS are higher than those sampled by general non-gas-tight water samplers,thus confirming the gas tightness of GTWSS.Seawater samples can be collected quickly by using GTWSS,and GTWSS can keep the samples' integrity quite well. | HUANG Haocai YANG Canjun CHEN Shicheng CHEN Daohua SUN Chunyan NIU Wenda LI Fengbo LIU Guanghu CHEN Ying | 2012 | Chinese Journal of Mechanical Engineering2012，25，4： | 0 |
| 12 | Novel liquid scintillator radon detector显示文摘Purpose Radon is a noble gas,which endangers our health.The liquid scintillator is one of the detector materials used to measure radon in the environment.But there are challenges in measuring radon using a liquid scintillator,such as independent manual operation and long measurement periods.Methods and Results We propose a liquid scintillator detector for the rapid measurement of radon,which is composed of a breathable liquid scintillator probe and photomultiplier tube.Cascade decay recognition and pulse shape discrimination(PSD)were used to select radon events.241 Am4(α)and 90Sr(β)source calibration was used to optimize the PSDfigure of merit of the liquid scintillator,and a 232Th(220Rn)diffusion source was used to verify the function of this novel detector for measuring radon.Conclusion The detector had an integrated design for sampling and measurement,which simplified the measurement steps.Thus,this novel liquid scintillator detector demonstrated promise for use in radon-detection systems. | Junjie Li Xilei Sun Jiaxuan Ye Baohua Qi Xin Ling Yong Deng Dejing Du Xiaoxue Fan Fengbo Gu Xiaohui Qi Huan Jiang Chenger Wang Zhihang Zhu Guopu Qu | 2022 | Radiation Detection Technology and Methods2022，6，3： | 0 |
| 13 | Dynamic Viscoelastic Properties of γ Rays Treated Bamboo Strip in Different Temperatures显示文摘The dynamic viscoelastic properties of bamboo were tested by dynamic mechanics analyzer (DMA),and the measurements were done in the temperature range of 40℃ to 300℃at frequencies of 3 Hz.The results showed that with the increase of irradiation dose,the decrease of storage modulus with increasing temperature became more dramatically.The decrease extent of storage modulus was the lowest for non-irradiated bamboo.Two mechanical relaxation processes were observed for all kinds of irradiated bamboo.The a relaxation process in lower temperature range was due to glass transition of hemicellulose and login,while the β relaxation process occurred in higher temperature range was based on glass transition of cellulose.The loss peak strength ofαrelaxation process went up as the irradiation dose increase,while the loss peak strength of β relaxation process became up first and then down,which was caused by the chemical reaction of the chief composition of bamboo. | Sun Fengbo Fei Benhua Jiang Zehui Cheng Haitao Yu Zixuan Chang Xiangzhen | 2012 | Chinese Forestry Science and Technology2012，11，3： | 0 |
| 14 | Photodimerization of azaanthracene derivatives mediated by cucurbit[10]uril显示文摘Challenges of achieving efficient photodimerization of azaanthracene derivatives remain due to the low selectivity and slow reaction rate.In this paper,cucurbit[10]uril(CB[10]),with the largest rigid and hydrophobic cavity among CB[n]s,was used to affect the photodimerization reaction of four water-soluble 1-(2-)substituted azaanthracene derivatives(1-4).It revealed that 1-4 could form 1:2 host-guest complexes with CB[10]in aqueous solution.Irradiation of 1 in the presence of 0.5 equiv.of CB[10]selectively produced a head-to-tail(anti-HT)photodimer product.As for 2-4,CB[10]acted as a nanoreactor accelerating their photodimerization reaction in water.Our results suggest that photodimerization of azaanthracene derivatives could be promoted by the CB[10]-based host-guest strategy with high efficiency and selectivity. | Huaxing Li Xianchen Hu Fengbo Liu Dongdong Sun Yong Wu Simin Liu | 2022 | Chinese Chemical Letters2022，33，12： | 0 |
| 15 | 应用SELDI-TOF-MS技术筛选血清蛋白标志物以建立胃癌早期的诊断模型(英文)显示文摘Objective:Surface-enhanced laser desorption/ionization time-of-flight mass spectrometry(SELDI-TOF-MS) is one of the currently used techniques to identify biomarkers for cancers.This study was planned to make a proteomic analysis on the serum of stage I gastric cancer patients and establish a early diagnostic model for identifying stage I gastric cancer preliminarily.Methods:A total of 229 serum samples including 169 pathologically confirmed gastric cancer patients(stage I:n = 47;stage II:n = 39;stage III:n = 46;stage IV:n = 37) and 60 gastritis patients were analyzed by SELDI-TOF-MS Protein Chip array technology.The resulting SELDI-TOF-MS spectral data were analyzed using the Biomarker WizardTM and Biomarker Patterns software to find differential proteins and develop a classification tree for early gastric cancer.Results:Twelve proteins were significantly over expressed(P<0.05,Student t-test) in patients with gastric cancer compared to patients with gastritis.Among them,three protein masses with 2873,6121 and 7778 m/z was found to be differentially expressed solely in patients suffering from stage I gastric cancer.The three protein masses construct the decision tree which could effectively distinguish stage I gastric cancer samples from control samples,achieving a sensitivity and specificity of 89.36(42/47) and 97.32%(182/187),respectively.Conclusion:Serum Proteomic Patterns can be used for the quick diagnosis of stage I gastric cancer.SELDI-TOF-MS is a useful tool for the detection and identification of new protein markers in serum. | Chunwei Li Dianliang Zhang Jian Zhang Fengbo Sun Lei Mi | 2011 | The Chinese-German Journal of Clinical Oncology2011，10，5： | 0 |
| 16 | Continuously released Zn^(2+)in 3D-printed PLGA/β-TCP/Zn scaffolds for bone defect repair by improving osteoinductive and anti-inflammatory properties显示文摘Long-term nonunion of bone defects has always been a major problem in orthopedic treatment.Artificial bone graft materials such as Poly(lactic-co-glycolic acid)/β-tricalcium phosphate(PLGA/β-TCP)scaffolds are expected to solve this problem due to their suitable degradation rate and good osteoconductivity.However,insufficient mechanical properties,lack of osteoinductivity and infections after implanted limit its large-scale clinical application.Hence,we proposed a novel bone repair bioscaffold by adding zinc submicron particles to PLGA/β-TCP using low temperature rapid prototyping 3D printing technology.We first screened the scaffolds with 1 wt%Zn that had good biocompatibility and could stably release a safe dose of zinc ions within 16 weeks to ensure long-term non-toxicity.As designed,the scaffold had a multi-level porous structure of biomimetic cancellous bone,and the Young’s modulus(63.41±1.89 MPa)and compressive strength(2.887±0.025 MPa)of the scaffold were close to those of cancellous bone.In addition,after a series of in vitro and in vivo experiments,the scaffolds proved to have no adverse effects on the viability of BMSCs and promoted their adhesion and osteogenic differentiation,as well as exhibiting higher osteogenic and anti-inflammatory properties than PLGA/β-TCP scaffold without zinc particles.We also found that this osteogenic and anti-inflammatory effect might be related to Wnt/β-catenin,P38 MAPK and NFkB pathways.This study lay a foundation for the follow-up study of bone regeneration mechanism of Zn-containing biomaterials.We envision that this scaffold may become a new strategy for clinical treatment of bone defects. | Chunxu Li Fengbo Sun Jingjing Tian Jiahao Li Haidan Sun Yong Zhang Shigong Guo Yuanhua Lin Xiaodan Sun Yu Zhao | 2023 | Bioactive Materials2023，，6： | 0 |
| 17 | Stratigraphy and Zircon Provenance of a Late Paleoproterozoic Terrestrial Sequence underlying the Xiong'er Volcanics in the Southern North China Craton显示文摘The late Paleoproterozoic Dagushi Formation comprises a fluvial-lacustrine succession and represents the initial fill of the Xiong'er Basin in the southern North China Craton.Employing integrated outcrop surveys and detrital zircon UPb-Hf dating,this study examines the provenance and depositional setting of the Dagushi Formation.Five major depositional facies,including braided channel,distributary channel,subaqueous stream/mouth bar,pro-delta and shallow lake,were identified,based on lithofacies and associations.They were interpreted as representing a braided river deltalacustrine system.The ages of the last metamorphic event of the basement,covering volcanics and the youngest zircon together constrain a depositional age of ca.1.79 Ga for the Dagushi Formation.Zircon age distributions reveal a provenance change from ca.2.7–2.5 Ga rocks in the lower part,to ca.2.3–1.9 Ga sources in the middle-upper part of the Dagushi Formation.Considering the vertical sedimentology,this provenance change could be induced by the rising water-level caused by a tectonic subsidence.The ca.2.7–2.5 Ga zircons are suggested to be locally sourced from the late Neoarchean–Paleoproterozoic metamorphic basement.The northeast Zhongtiao Mts area(current co-ordinates)is supposed to have appeared as a paleo-uplift and served as a source area for the Paleoproterozoic grains.The Dagushi Formation records an early‘underfilled'stage of the Xiong'er Rift. | SUN Fengbo ZHENG Deshun ZUO Pengfei LIU Weiqing | 2022 | Acta Geologica Sinica(English Edition)2022，96，5： | 0 |
| 18 | Efcient soluble PTCBI‑type non‑fullerene acceptor materials for organic solar cells显示文摘Single perylene diimide(PDI)used as a non-fullerene acceptor(NFA)in organic solar cells(OSCs)is enticing because of its low cost and excellent stability.To improve the photovoltaic performance,it is vital to narrow the bandgap and regulate the stacking behavior.To address this challenge,we synthesize soluble perylenetetracarboxylic bisbenzimidazole(PTCBI)molecules with a bulky side chain at the bay region,by replacing the widely used“swallow tail”type alkyl chains at the imide position of PDI molecules with a planar benzimidazole structure.Compared with PDI molecules,PTCBI molecules exhibit red-shifted UV–vis absorption spectra with larger extinction coefcient,and one magnitude higher electron mobility.Finally,OSCs based on one soluble PTCBI-type NFA,namely MAS-7,exhibit a champion power conversion efciency(PCE)of 4.34%,which is signifcantly higher than that of the corresponding PDI-based OSCs and is the highest PCE of PTCBI-based OSCs reported.These results highlight the potential of soluble PTCBI derivatives as NFAs in OSCs. | Xiang Gao Fengbo Sun Xinzhu Tong Xufan Zheng Yinuo Wang Cong Xiao Pengcheng Li Renqiang Yang Xunchang Wang Zhitian Liu | 2023 | Frontiers of Optoelectronics2023，16，2： | 0 |
| 19 | Improving flexural strength of Ti_(2)C-Ti cermet by hot compressive deformation:Microstructure evolution and fracture behaviors显示文摘In order to improve the microstructure and mechanical properties,the hot compressive deformation with 50%height reduction at 1100℃was conducted on a Ti_(2)C-Ti cermet.The results showed that the lamellar Ti precipitates in Ti_(2)C grains were transformed to bimodal size distribution,which was approximately 290 nm and 5.8μm in diameter,respectively,after the hot deformation.The bimodal Ti precipitates suppressed{011}cleavage surfaces of Ti_(2)C during flexural fracture,which resulted in an 18.5%increment of strength.This phenomenon can be attributed to the bimodal Ti precipitates that decreased the average crack driving force due to their gentle variation in elastic modulus compared with the monolithic lamellar Ti precipitates.The present work can guide further deformation and mechanical property improvement of Ti_(2)C cermets. | SUN FengBo WANG Shuai CHEN Xin ZHANG Rui AN Qi LIU WenQi HUANG LuJun GENG Lin | 2023 | Science China(Technological Sciences)2023，66，11： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员