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| 1 | Anti-loosening performance of coatings on fasteners subjected to dynamic shear load显示文摘This paper investigates the self-loosening of threaded fasteners subjected to dynamic shear load. Three kinds of typical coatings, PTFE, MoS_2, and TiN applied to bolts and nuts, are tested in this investigation. The study experimentally examines the loosening mechanisms of fasteners and assesses the anti-loosening performance of the three tested coatings based on their tightening characteristics, loosening curves, and the damage of thread surface. Additionally, the anti-loosening performance of the three coatings is compared under different load forms. The results indicate that the PTFE and MoS_2 coatings have significant anti-loosening effect, whereas the anti-loosening performance of Ti N coating is not satisfactory. It is also found that an appropriate increase of the initial tightening torque can significantly improve the anti-loosening effect. In addition, the microscopic analyses of PTFE and MoS2 coating reveal that a reduced initial tightening torque leads to fretting wear on the thread contact surfaces of fasteners, thereby aggravating the damage. | Junbo ZHOU Jianhua LIU Huajiang OUYANG Zhenbing CAI Jinfang PENG Minhao ZHU | 2018 | Friction2018，6，1： | 10 |
| 2 | Amino-functionalized Ti_(3)C_(2)T_(x) with anti-corrosive/wear function for waterborne epoxy coating显示文摘Two-dimensional Ti_(3)C_(2)T_(x) flakes have great application potential in various areas due to their optical,electronic,electrochemical and mechanical properties,but their anti-corrosion and wear-resistance performance were not well understood.The difficulties in achieving good dispersity and interface interaction of inorganic additives in organic coatings hinder the incorporation of Ti_(3)C_(2)T_(x) into the epoxy coating.Here,few-layered Ti_(3)C_(2)T_(x) sheets with amino-functionalization were prepared,and as reinforced-additives were added into the waterborne epoxy coating.Anti-corrosion and tribological properties of as-prepared composite coatings were investigated in detail.The results reveal that the composite coating with 0.5 wt.%amino-functionalized Ti_(3)C_(2)T_(x) sheets shows excellent corrosion protection(the lowest frequency impedance was 3.12×10^(9) cm^(2))and wear resistance(wear rate was reduced by 72.74%).The greatly improving performance of composite coatings mainly depends on:(a)good dispersity and compatibility of amino-functionalized Ti_(3)C_(2)T_(x) in organic matrix,(b)high adhesion strength between coating and metal substrate and(c)the intrinsic properties of Ti3C2Tx sheets.The work provides a good path for applications of MXene as multifunctional additives. | Han Yan Meng Cai Wen Li Xiaoqiang Fan Minhao Zhu | 2020 | Journal of Materials Science & Technology2020，54，19： | 7 |
| 3 | Comparative study on corrosion resistance and lubrication function of lithium complex grease and polyurea grease显示文摘In this study,lithium complex grease(LCG)and polyurea grease(PUG)were synthesized using mineral oil(500 SN)and polyalphaolefin(PAO40)as base oil,adsorbed onto lithium complex soap and polyurea as thickeners,respectively.The effects of grease formulation(thickener and base oil with different amounts(80,85,and 90 wt%)on the corrosion resistance and lubrication function were investigated in detail.The results have verified that the as-prepared greases have good anti-corrosion ability,ascribed to good salt-spray resistance and sealing function.Furthermore,the increase in the amount of base oil reduces the friction of the contact interface to some extent,whereas the wear resistance of these greases is not consistent with the friction reduction,because the thickener has a significant influence on the tribological property of greases,especially load-carrying capacity.PUG displays better physicochemical performance and lubrication function than LCG under the same conditions,mainly depending on the component/structure of polyurea thickener.The polyurea grease with 90 wt%PAO displays the best wear resistance owing to the synergistic lubrication of grease-film and tribochemical film,composed of Fe_(2)O_(3),FeO(OH),and nitrogen oxide. | Guanlin REN Pengfei ZHANG Xiangyuan YE Wen LI Xiaoqiang FAN Minhao ZHU | 2021 | Friction2021，9，1： | 5 |
| 4 | Improving the lubrication and anti-corrosion performance of polyurea grease via ingredient optimization显示文摘Thickener formulation plays a significant role in the performance characteristics of grease.The polyurea greases(PUGs)were synthesized using mineral oil(500SN)as the base oil,and by regulating the reaction of diphenylmethane diisocyanate(MDI)and different organic amines.The as‐prepared PUGs from the reaction of MDI and cyclohexylamine/p‐toluidine exhibit the optimum physicochemical and friction‐wear properties,confirming that the regulation of thickener formulation can improve the performance characteristics of grease,including friction reduction,wear,corrosion resistance,and load‐carrying capacity.The anticorrosion and lubrication properties of as‐prepared PUGs depend on good sealing functions and a boundary lubrication film(synergy of grease‐film and tribo‐chemical reaction film),as well as their chemical components and structure. | Guanlin REN Xiaowen SUN Wen LI Hao LI Lin ZHANG Xiaoqiang FAN Dongshan LI Minhao ZHU | 2021 | Friction2021，9，5： | 4 |
| 5 | Molecular architecture of the luminal ring of the Xenopus laevis nuclear pore complex显示文摘The nuclear pore complex(NPC)mediates the flow of substances between the nucleus and cytoplasm in eukaryotic cells.Here we report the cryo-electron tomography(cryo-ET)structure of the luminal ring(LR)of the NPC from Xenopus laevis oocyte.The observed key structural features of the LR are independently confirmed by single-particle cryo-electron microscopy(cryo-EM)analysis.The LR comprises eight butterfly-shaped subunits,each containing two symmetric wings.Each wing consists of four elongated,tubular protomers.Within the LR subunit,the eight protomers form a Finger domain,which directly contacts the fusion between the inner and outer nuclear membranes and a Grid domain,which serves as a rigid base for the Finger domain.Two neighboring LR subunits interact with each other through the lateral edges of their wings to constitute a Bumper domain,which displays two major conformations and appears to cushion neighboring NPCs.Our study reveals previously unknown features of the LR and potentially explains the elastic property of the NPC. | Yanqing Zhang Sai Li Chao Zeng Gaoxingyu Huang Xuechen Zhu Qifan Wang Kunpeng Wang Qiang Zhou Chuangye Yan Wusheng Zhang Guangwen Yang Minhao Liu Qinghua Tao Jianlin Lei Yigong Shi | 2020 | Cell Research2020，30，6： | 4 |
| 6 | Analysis of steering performance of differential coupling wheelset显示文摘In order to improve the curving performance of the conventional wheelset in sharp curves and resolve the steering ability problem of the independently rotating wheel in large radius curves and tangent lines, a differential coupling wheelset(DCW) was developed in this work. The DCW was composed of two independently rotating wheels(IRWs) coupled by a clutch-type limited slip differential.The differential contains a static pre-stress clutch, which could lock both sides of IRWs of the DCW to ensure a good steering performance in curves with large radius and tangent track. In contrast, the clutch could unlock the two IRWs of the DCW in a sharp curve to endue it with the characteristic of an IRW, so that the vehicles can go through the tight curve smoothly. To study the dynamic performance of the DCW, a multi-body dynamic model of single bogie with DCWs was established. The self-centering capability, hunting stability,and self-steering performance on a curved track were analyzed and then compared with those of the conventional wheelset and IRW. Finally, the effect of coupling parameters of the DCW on the dynamic performance was investigated. | Xingwen Wu Maoru Chi Jing Zeng Weihua Zhang Minhao Zhu | 2014 | Journal of Modern Transportation2014，22，2： | 4 |
| 7 | Fretting Wear Behavior of Medium Carbon Steel Modified by Low Temperature Gas Multi-component Thermo-chemical Treatment显示文摘The introduction of surface engineering is expected to be an effective strategy against fretting damage. A large number of studies show that the low gas multi-component (such as carbon, nitrogen, sulphur and oxygen, etc) thermo-chemical treatment(LTGMTT) can overcome the brittleness of nitriding process, and upgrade the surface hardness and improve the wear resistance and fatigue properties of the work-pieces significantly. However, there are few reports on the anti-fretting properties of the LTGMTT modified layer up to now, which limits the applications of fretting. So this paper discusses the fretting wear behavior of modified layer on the surface of LZ50 (0.48%C) steel prepared by low temperature gas multi-component thermo-chemical treatment (LTGMTT) technology. The fretting wear tests of the modified layer flat specimens and its substrate (LZ50 steel) against 52100 steel balls with diameter of 40 mm are carried out under normal load of 150 N and displacement amplitudes varied from 2 μm to 40 μm. Characterization of the modified layer and dynamic analyses in combination with microscopic examinations were performed through the means of scanning electron microscope(SEM), optical microscope(OM), X-ray diffraction(XRD) and surface profilometer. The experimental results showed that the modified layer with a total thickness of 60 μm was consisted of three parts, i.e., loose layer, compound layer and diffusion layer. Compared with the substrate, the range of the mixed fretting regime(MFR) of the LTGMTT modified layer diminished, and the slip regime(SR) of the modified layer shifted to the direction of smaller displacement amplitude. The coefficient of friction(COF) of the modified layer was lower than that of the substrate in the initial stage. For the modified layer, the damage in partial slip regime(PSR) was very slight. The fretting wear mechanism of the modified layer both in MFR and SR was abrasive wear and delamination. The modified layer presented better wear resistance than the substrate in PSR and MFR; however, in SR, the wear resistance of the modified layer decreased with the increase of the displacement amplitudes. The experimental results can provide some experimental bases for promoting industrial application of LTGMTT modified layer in anti-fretting wear. | LUO Jun ZHENG Jianfeng PENG Jinfang HE Liping ZHU Minhao | 2010 | Chinese Journal of Mechanical Engineering2010，23，3： | 3 |
| 8 | Structure of the cytoplasmic ring of the Xenopus laevis nuclear pore complex by cryo-electron microscopy single particle analysis显示文摘The nuclear pore complex(NPC)exhibits structural plasticity and has only been characterized at local resolutions of up to 15 A for the cytoplasmic ring(CR).Here we present a single-particle cryo-electron microscopy(cryo-EM)structure of the CR from Xenopus laevis NPC at average resolutions of 5.5-7.9A,with local resolutions reaching 4.5 A.Improved resolutions allow identification and placement of secondary structural elements in the majority of the CR components.The two Y complexes in each CR subunit interact with each other and associate with those from flanking subunits,forming a circular scaffold.Within each CR subunit,the Nup358-containing region wraps around the stems of both Y complexes,likely stabilizing the scaffold.Nup205 connects the short arms of the two Y complexes and associates with the stem of a neighboring Y complex.The Nup214-containing region uses an extended coiled-coil to link Nup85 of the two Y complexes and protrudes into the axial pore of the NPC.These previously uncharacterized structural features reveal insights into NPC assembly. | Gaoxingyu Huang Yanqing Zhang Xuechen Zhu Chao Zeng Qifan Wang Qiang Zhou Qinghua Tao Minhao Liu Jianlin Lei Chuangye Yan Yigong Shi | 2020 | Cell Research2020，30，6： | 2 |
| 9 | Development of a novel cycling impact–sliding wear rig to investigate the complex friction motion显示文摘In many industrial devices, impact-sliding wear is caused by a variety of complex vibrations between the contacted interfaces. Under actual conditions, impact and sliding motions do not occur in only one direction, and different complex impact-sliding motions exist on the tribology surfaces. In this study, an impact-sliding wear test rig is developed to investigate the wear effect of different complex motions. Using this rig, multi-type impact-sliding wear effects are realized and measured, such as those derived from unidirectional, reciprocating, and multi-mode combination motions. These three types of impact–sliding wear running behavior are tested and the wear damage mechanism is discussed. | Zhenbing CAI Zhiqiang CHEN Yang SUN Jianying JIN Jinfang PENG Minhao ZHU | 2019 | Friction2019，7，1： | 2 |
| 10 | Cryo-EM structure of the inner ring from the Xenopus laevis nuclear pore complex显示文摘Nuclear pore complex(NPC)mediates nucleocytoplasmic shuttling.Here we present single-particle cryo-electron microscopy structure of the inner ring(IR)subunit from the Xenopus laevis NPC at an average resolution of 4.2Å.A homo-dimer of Nup205 resides at the center of the IR subunit,flanked by two molecules of Nup188.Four molecules of Nup93 each places an extended helix into the axial groove of Nup205 or Nup188,together constituting the central scaffold.The channel nucleoporin hetero-trimer of Nup62/58/54 is anchored on the central scaffold.Six Nup155 molecules interact with the central scaffold and together with the NDC1–ALADIN hetero-dimers anchor the IR subunit to the nuclear envelope and to outer rings.The scarce inter-subunit contacts may allow sufficient latitude in conformation and diameter of the IR.Our structure reveals the molecular basis for the IR subunit assembly of a vertebrate NPC. | Gaoxingyu Huang Xiechao Zhan Chao Zeng Ke Liang Xuechen Zhu Yanyu Zhao Pan Wang Qifan Wang Qiang Zhou Qinghua Tao Minhao Liu Jianlin Lei Chuangye Yan Yigong Shi | 2022 | Cell Research2022，32，5： | 1 |
| 11 | Torsional fretting wear behavior of 7075 aluminium alloy in various relative humidity environments 显示文摘 | CAI Zhenbing ZHU Minhao SHEN Huoming | 2009 | Wear2009，267，： | 1 |
| 12 | Wear mechanism of aluminum-stainless steel composite conductor rail sliding against collector shoe with electric current显示文摘 | DONG Lin CHEN Guangxiong ZHU Minhao | 2007 | Wear2007，263，16： | 1 |
| 13 | The C_(6)D_(6)detector system on the Back-n beam line of CSNS显示文摘Introduction The neutron capture cross sections are very important in the field of nuclear device design and basic physics research.Hydrogen-free liquid scintillator such as C_(6)D_(6)detectors are widely used in the neutron capture cross-sectional measurements for the low neutron sensitivity and fast time response.The Back-n white neutron source at China Spallation Neutron Source is the first spallation white neutron source in China,and it is suitable for neutron capture cross-sectional measurement.Materials and methods A C_(6)D_(6)detector system was built in the Back-n experimental station.The pulse height weighting technique was used to determine the system’s detection efficiency.The response to gamma rays of the C_(6)D_(6)detector was measured,and the energy resolution function was determined.Monte Carlo simulation with Geant4 code was carried out to get the weighting function of this C_(6)D_(6)detector system.Additionally,the systematic uncertainty of the weighting function was also determined.Conclusion According to the experimental and simulation results,this C_(6)D_(6)detector system can be used to measure neutron capture cross section. | Jie Ren Xichao Ruan Jie Bao Guangyuan Luan Wei Jiang Qi An Huaiyong Bai Ping Cao Qiping Chen Yonghao Chen Pinjing Cheng Zengqi Cui Ruirui Fan Changqing Feng Minhao Gu Fengqin Guo Changcai Han Zijie Han Guozhu He Yongcheng He Yuefeng He Hanxiong Huang Weiling Huang Xiru Huang Xiaolu Ji Xuyang Ji Haoyu Jiang Hantao Jing Ling Kang Mingtao Kang Bo Li Lun Li Qiang Li Xiao Li Yang Li Yang Li Rong Liu Shubin Liu Xingyan Liu Yinglin Ma Changjun Ning Binbin Qi Zhaohui Song Hong Sun Xiaoyang Sun Zhijia Sun Zhixin Tan Hongqing Tang Jingyu Tang Pengcheng Wang Qi Wang Taofeng Wang Yanfeng Wang Zhaohui Wang Zheng Wang Jie Wen Zhongwei Wen Qingbiao Wu Xiaoguang Wu Xuan Wu Likun Xie Yiwei Yang Han Yi Li Yu Tao Yu Yongji Yu Guohui Zhang Jing Zhang Linhao Zhang Liying Zhang Qingmin Zhang Qiwei Zhang Xianpeng Zhang Yuliang Zhang Zhiyong Zhang Yingtan Zhao Liang Zhou Zuying Zhou Danyang Zhu Kejun Zhu Peng Zhu | 2019 | Radiation Detection Technology and Methods2019，3，3： | 1 |
| 14 | Study on rotational fretting wear of 7075 aluminum alloy显示文摘 | MO Jiliang ZHU Minhao ZHENG Jianfeng | 2010 | Tribologylntemational2010，43，56： | 1 |
| 15 | An investigation of molybdenum disulfide bonded solid ubricant coatings in fretting conditions显示文摘 | ZHU Minhao ZHOU Zhongrong | 2001 | Surface and Coatings Technology2001，141，23： | 1 |
| 16 | An investigation on fretting wear life of bonded MoS2 solid lubricant coatings in complex conditions显示文摘 | XU Jin ZHU Minhao ZHOU Zhongrong | 2003 | Wear2003，255，16： | 1 |
| 17 | An experimental investigation on composite fretting mode显示文摘 | ZHU Minhao ZHOU Zhongrong KapsaPh | 2001 | Tribology International2001，34，： | 1 |
| 18 | Wear Mechanism of Aluminum-Stainless Steel Composite Conductor Rail Sliding Against Collector Shoe with Electric Current显示文摘 | DONG Lin CHEN Guangxiong ZHU Minhao | 2007 | Wear2007，263，16： | 1 |
| 19 | In situ obser- vations of the real-time wear of PMMA flat against steel ball under torsional fretting显示文摘 | Cai Zhenbing Zhu Minhao Yang Sha | 2011 | Wear2011，271，： | 1 |
| 20 | Tribo- logical behavior of polymethyl methaerylate against dif- ferent counter-bodies induced by torsional fretting wear 显示文摘 | Cai Zhenbing Gao Shanshan Zhu Minhao | 2011 | Wear2011，270，： | 1 |
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