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| 1 | High-entropy(La_(0.2)Nd_(0.2)Sm_(0.2)Eu_(0.2)Gd_(0.2))_(2)Ce_(2)O_(7):A potential thermal barrier material with improved thermo-physical properties显示文摘High-entropy oxides(HEOs)are widely researched as potential materials for thermal barrier coatings(TBCs).However,the relatively low thermal expansion coefficient(TEC)of those materials severely restricts their practical application.In order to improve the poor thermal expansion property and further reduce the thermal conductivity,high-entropy(La_(0.2)Nd_(0.2)Sm_(0.2)Eu_(0.2)Gd_(0.2))_(2)Ce_(2)O_(7) is designed and synthesized in this work.The as-prepared multicomponent material is formed in a simple disordered fluorite structure due to the high-entropy stabilization effect.Notably,it exhibits a much higher TEC of approximately 12.0×10^(−6) K^(−1) compared with those of other high-entropy oxides reported in the field of TBCs.Besides,it presents prominent thermal insulation behavior with a low intrinsic thermal conductivity of 0.92 W·m^(−1)·K^(−1) at 1400℃,which can be explained by the existence of high concentration oxygen vacancies and highly disordered arrangement of multicomponent cations in the unique high-entropy configuration.Through high-temperature in-situ X-ray diffraction(XRD)measurement,this material shows excellent phase stability up to 1400℃.Benefiting from the solid solution strengthening effect,it shows a higher hardness of 8.72 GPa than the corresponding single component compounds.The superior thermo-physical performance above enables(La_(0.2)Nd_(0.2)Sm_(0.2)Eu_(0.2)Gd_(0.2))_(2)Ce_(2)O_(7) a promising TBC material. | Yun XUE Xiaoqin ZHAO Yulong AN Yijing WANG Meizhen GAO Huidi ZHOU Jianmin CHEN | 2022 | Journal of Advanced Ceramics2022，11，4： | 7 |
| 2 | Effect of microstructure evolution of Ti6Al4V alloy on its cavitation erosion and corrosion resistance in artificial seawater显示文摘The investigate about the effect of the microstructure of Ti6Al4V alloy on its cavitation erosion and corrosion properties in marine can provide the key basis for the application.On the basis of as-received Ti6Al4V(TC4)alloy,FC-TC4 and AC-TC4 alloys were prepared by heat treatment with the cooling method of a furnace and atmospheric environment,respectively.Then the microstructure evolutions of three samples were scrutinized and the effect of microstructure on their cavitation erosion and corrosion resistance was explored.The results showed that more recrystallized grains formed as well as its content of α grains and high-angle grain boundaries increased in AC-TC4 alloy.To FC-TC4 alloy,there was obvious grain growth apart from recrystallization.Moreover,many nanotwins of Ti V and Ti Al_(3)were formed separately in FC-TC4 and AC-TC4 alloys due to the dislocation migration during heat treatment.The microstructure evolution led the hardness and elastic modulus of AC-TC4 alloy were the best,followed by FC-TC4 alloy,that of TC4 were the worst.Similarly,passivating ability of AC-TC4 alloy was the best among three samples because of its microstructure.Although cracks extended along the grain boundaries under the action of continual cavitation erosion,the passivation film formed by TiO_(2) and Al_(2)O_(3) would enhance their resistance to further corrosion and cavitation erosion in artificial seawater. | Yijing Wang Enkang Hao Xiaoqin Zhao Yun Xue Yulong An Huidi Zhou | 2022 | Journal of Materials Science & Technology2022，，5： | 4 |
| 3 | Gadolinium-hyaluronic acid nanoparticles as an efficient and safe magnetic resonance imaging contrast agent for articular cartilage injury detection显示文摘Accurate detection of cartilage injuries is critical for their proper treatment because these injuries lack the selfhealing ability and lead to joint dysfunction.However,the low longitudinal T1 relaxivity(r1)and non-specificity of contrast agents(such as gadolinium(III)-diethylenetriamine-pentaacetic acid(Gd-DTPA))significantly limit the efficiency of clinical magnetic resonance imaging(MRI)applications.To overcome these drawbacks,we integrated hyaluronic acid(HA)with Gd to synthesize a Gd-DTPA-HA composite,which was subsequently freeze-dried to produce nanoparticles(NPs).The resultant Gd-HA NPs demonstrated a greater r1 value(12.51 mM^-1 s^-1)compared with the bulk Gd-DTPA-HA(8.37 mM^-1 s^-1)and clinically used Gd-DTPA(3.88 mM^-1 s^-1).Moreover,the high affinity of HA to the cartilage allowed these NPs to penetrate deeper beyond the cartilage surface.As a result,Gd-HA NPs considerably increased the quality of cartilage and lesion MR images via their intra-articular injection in vivo.Specifically,2 h after NP administration,the signal-to-noise ratio at the injured cartilage site was 2.3 times greater than the value measured before the injection.In addition,Gd-HA NPs exhibited good biosafety properties due to the absence of adverse effects in the blood or on the main organs.It was also showed that Gd NPs were first metabolized by the kidney and liver and then excreted from the body with urine.Thus,Gd-HA NPs can potentially serve as an efficient MRI contrast agent for improved detection of cartilage injuries. | Rong Lu Yuyang Zhang Hongyue Tao Lu Zhou Huidi Li Tianwu Chen Peng Zhang Yao Lu Shuang Chen | 2020 | Bioactive Materials2020，5，4： | 3 |
| 4 | Effect of Lamb Age and in vitro Culture System of Oocytes on JIVET Technology显示文摘[Objectives] This study was conducted to investigate the effects of lamb age and in vitro culture system of oocytes on the results of juvenile in vitro embryo transfer( JIVET). [Methods]Ten Dorper × small-tailed Han lambs aged 5 to 10 weeks were induced to superovulate via i. p. injection of pregnant mare's serum gonadotropin( PMSG). The oocytes were matured in basal maturation solution or modified maturation solution,which was prepared by adding 200 μmol/L cysteine to the basal maturation solution. Then,the oocytes were fertilized in fertilization medium I containing 2% estrus sheep serum( ESS) or fertilization medium II containing 3 mg/ml bull serum albumin( BSA). Finally,the number of oocytes,oocyte maturation rate and cleavage rate of the lambs of different ages were determined. [Results]The average number of oocytes recovered per lamb was( 111. 00 ± 16. 97),( 139. 50 ± 28. 99),( 108. 50 ± 17. 68) and( 42. 00 ± 11. 31) for5-,7-,8-and 10-week-old Dorper × small-tailed Han lambs,respectively. The number of oocytes obtained from 5-,7-and 8-week-old lambs was significantly higher than that from 10-week-old lambs( P < 0. 05),but there was no significant difference among 5-,7-and 8-week-old lambs( P > 0. 05). The maturation rate of oocytes cultured in modified maturation solution was 3. 64% higher than that in basal maturation solution. The cleavage rate of oocytes in fertilization medium I was very significantly higher than that in fertilization medium II( P < 0. 01). [Conclusions] The results of JIVET can be improved by harvesting oocytes from lambs aged 5-8 weeks,adding a certain amount of cysteine into oocyte maturation solution,and a certain amount of ESS into fertilization medium. | Yangyi MAO Huidi LUO Guanwu ZHANG Zhiwu WANG Peng ZHAO Jun LI Hongyu GUO Shenghua ZHOU Huihui GUO Chunyan LI | 2019 | Agricultural Biotechnology2019，8，1： | 3 |
| 5 | Microstructure, mechanical and tribological properties of graphite-like amorphous carbon films prepared by unbalanced magnetron sputtering显示文摘 | Yongjun Wang Hongxuan Li Li Ji Fei Zhao Qinghua Kong Yongxia Wang Xiaohong Liu Weilong Quan Huidi Zhou Jianmin Chen | 2010 | Surface & Coatings Technology2010，，8： | 2 |
| 6 | Microstructure and Tribological Properties of TiB_2/TiB/TiN_x(x=1,0.3)/Ti Composite Coating Produced on Pure Ti by Laser Surface Alloying显示文摘TiB2/TiB/TiNx(x=1,0.3)/Ti composite coating was prepared on pure Ti by laser surface alloying by using powders of boron as starting materials.The composite coating was examined by X-ray diffraction(XRD),high-resolution transmission electron microscopy(HRTEM)and scanning electron microscopy(SEM).The friction and wear properties of the composite coating were examined using a pin-on-disk tester under dry sliding wear condition.The results showed that the top surface of the composite coating was mainly composed of TiB2,TiB,TiN0.3,TiN and Ti phases,while the interface of the composite coating was composed of TiB and Ti phases.The composite coating showed sticklike structure near the top surface,and dendrites structure near the interface.The friction and wear test showed that the composite coating had better wear resistance than pure Ti due to their higher microhardness than that of pure Ti substrate. | Guo Chun1,2,Chen Jianmin1,Zhou Jiansong1,Zhao Jierong1,2,Wang Lingqian1,2,Yu Youjun1,2,Zhou Huidi 1 1 Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730000,China 2 Graduate University of Chinese Academy of Sciences,Beijing 100039,China | 2012 | 稀有金属材料与工程2012，41，S1： | 2 |
| 7 | Effect of annealing treatment on microstructures,mechanical properties and cavitation erosion performance of high velocity oxy-fuel sprayed NiCoCrAlYTa coating显示文摘The mechanical parts serving in the marine environment are up against the dual damage of corrosion and cavitation erosion,so the Ni Co Cr Al YTa coating with excellent corrosion resistance is successfully prepared by high velocity oxy-fuel(HVOF)sprayed technology to protect the equipment from deterioration.The chemical composition and mechanical properties as well as the microstructure evolution of the coating before and after annealing treatment are studied.At the same time,the influence of annealing treatment on the corrosion and cavitation erosion behaviors of the coating is investigated,as well.The NiCoCrAlYTa coating mainly containsγ-Ni,β-Ni Al,andγ’-Ni3Al phases.During the deposition,the microcrystals or incomplete crystals generate in the interior of the coating because of the large temperature difference and impact force.Meanwhile,there is twin crystal structure in the as-spayed coating.After annealing treatment,the growth of grains and the segregation of reactive elements improve interface strength and inhibit the formation of micro-defects in the coating.The annealing temperature is of significance to the microstructure,mechanical properties,anti-corrosion and cavitation erosion resistance of the coating.This study provides a combined approach toward improving the corrosion and cavitation erosion resistance of NiCoCrAlYTa coatings. | Enkang Hao Yulong An Xia Liu Yijing Wang Huidi Zhou Fengyuan Yan | 2020 | Journal of Materials Science & Technology2020，52，18： | 2 |
| 8 | An Investigation of Friction and Wear Performances of Bonded Molybdenum Disulfide Solid Film Lubricants in Fretting Conditions显示文摘 | Ye Yinping Chert Jianmin Zhou Huidi | 2009 | Wear2009，266，78： | 1 |
| 9 | Effects of WC–Ni content on microstructure and wear resistance of laser cladding Ni-based alloys coating显示文摘 | Chun Guo Jianmin Chen Jiansong Zhou Jierong Zhao Lingqian Wang Youjun Yu Huidi Zhou | 2011 | Surface & Coatings Technology2011，，8： | 1 |
| 10 | Sliding Wear Behavior of HVOF-sprayed Cr3C2–NiCr/CeO2 Composite Coatings at Elevated Temperature up to 800?°C显示文摘 | Bin Yin Guang Liu Huidi Zhou Jianmin Chen Fengyuan Yan | 2010 | Tribology Letters2010，，2： | 1 |
| 11 | 显示文摘 | Ye Yinping Zhou Huidi Chen Jianmin | 2005 | Nanotechnology and Precision Engineering2005，3，1： | 1 |
| 12 | An investigation of friction and wear performances of bonded molybdenum disulfide solid film lubricants in fretting conditions显示文摘 | YE Yinping CHEN Jianmin ZHOU Huidi | 2009 | Wear2009，266，78： | 1 |
| 13 | Preparation of Cu-Ni bimetallic nanoparticles surface-capped with dodecanethiol and their tribological properties as lubricant additive显示文摘 | Lei Chen Haiyan Xu Haixia Cui Huidi Zhou Hongqi Wan Jianmin Chen | 2017 | Particuology2017，15，5： | 1 |
| 14 | Influence of substrate bias voltage on structure and properties of the CrAlN films deposited by unbalanced magnetron sputtering显示文摘 | Yanhong Lv Li Ji Xiaohong Liu Hongxuan Li Huidi Zhou Jianmin Chen | 2011 | Applied Surface Science2011，，8： | 1 |
| 15 | Composition, microstructure, and properties of CrN x films deposited using medium frequency magnetron sputtering显示文摘 | Qinghua Kong Li Ji Hongxuan Li Xiaohong Liu Yongjun Wang Jianmin Chen Huidi Zhou | 2010 | Applied Surface Science2010，，6： | 1 |
| 16 | Comparative investigation on the wear and transfer behaviors of carbon fiber reinforced polymer composites under dry sliding and water lubrication显示文摘 | Junhong Jia Jianmin Chen Huidi Zhou Litian Hu Lei Chen | 2005 | Composites Science and Technology2005，，7： | 1 |
| 17 | Comparative study of the friction and wear behavior of plasma sprayed conventional and nano- structured WC-12%Co coatings on stainless steel 显示文摘 | Zhao Xiaoqin Zhou Huidi Chert Jianmin | 2006 | Materials Science and Engineering A2006，431，： | 1 |
| 18 | Friction and wear properties of bronze-graphite composite under water lubrication显示文摘 | Jia Junhong Chen Jianmin Zhou Huidi | 2004 | Tribology International2004，37，5： | 1 |
| 19 | Preparation, microstructure and tribological behavior of laser cladding NiAl intermetallic compound coatings显示文摘 | Youjun Yu Jiansong Zhou Jianmin Chen Huidi Zhou Chun Guo Lingqian Wang Lianbin Yang | 2011 | Wear2011，，： | 1 |
| 20 | Comparative investigation on the wear and transfer behaviors of carbon fiber reinforced polymer composites under dry sliding and water lubrication显示文摘 | Junhong Jia Jia Chen Huidi Zhou | 2005 | Composites Science and Technology2005，65，： | 1 |
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