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| 1 | Mullite Oxidation Resistant Coating for SiC-coated Carbon/Carbon Composites by Supersonic Plasma Spraying显示文摘To improve the oxidation resistance of carbon/carbon (C/C) composites, mullite coating was prepared on the surface of SiC-coated C/C composites by supersonic plasma spraying. Phases and microstructures of mullite coating were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The coating primarily consists of a single phase of mullite (3Al2O3-2SiO2). The SEM results show that mullite coating was continuous and well bonded with the SiC inner layer without penetrating crack. Mullite coating exhibited good oxidation resistance. After 98.5 h oxidation at 1773 K and 9 thermal shock cycles between 1773 K and room temperature, the weight loss of the coated C/C composites was only 2.57%. | Chao Ma Hejun Li Heng Wu Qiangang Fu Can Sun Xiaohong Shi Yulei Zhang Zhengzhong Zhang Jun Tao Zhihai Han | 2013 | Journal of Materials Science & Technology2013，29，1： | 4 |
| 2 | Hierarchical,seamless,edge-rich nanocarbon hybrid foams for highly efficient electromagnetic-interference shielding显示文摘Lightweight,flexible,ultrahigh-performance electromagnetic-interfe rence(EMI)shielding materials are urgently required in the areas of aircraft/aerospace,portable and wearable electronics.Herein,1 D carbon nanotubes(CNT)and carbon nanofibers(CNF)with 2 D edge-rich graphene(ERG)are used to form a lightweight,flexible CNT-ERG-CNF hybrid foam.This foam was fabricated through a self-sacrificial templating chemical vapor deposition process,where nanocarbons bond through covalent bonding,forming a hierarchical 3 D hybridized carbon nanostructure.Multistage conductive networks and heterogeneous interfaces were constructed using edge-rich nanocarbons to increase the induced currents and interfacial polarization which makes great contributions to achieve high absorption electromagnetic shielding effectiveness(SEA).The CNT-ERG-CNF hybrid foam exhibits EMI shielding effectiveness(SE)exceeding55.4 dB in the X-band while the specific SE(SSE,SE divided by mass density)achieves 9200 dB cm^(3)g^(-1),which surpasses that of nearly all other carbon-based composite materials.Furthermore,the structural stability and durability of the flexible CNT-ERG-CNF hybrid foams is examined by measuring EMI SE after 10000 times cyclic bending.Remarkably,this work not only provides a new idea for preparing hierarchical carbon materials for a wide range of applications,but presents some fundamental insights for achieving higher absorption losses in EMI shielding materials. | Liyuan Han Qiang Song Kezhi Li Xuemin Yin Jiajia Sun Hejun Li Fengpei Zhang Xinran Ren Xi Wang | 2021 | Journal of Materials Science & Technology2021，，13： | 2 |
| 3 | Enhancing both strength and toughness of carbon/carbon composites by heat-treated interface modification显示文摘A simple method to increase both strength and toughness of carbon/carbon(C/C) composites is presented.This method is based on the heat treatment of the pre-deposited thin carbon coating, leading to the formation of more orderly pyrolytic carbon(PyC) as a functional interlayer between fiber and matrix that could optimize the interfacial sliding strength in C/C composites. Effects of such a heat-treated PyC layers on the microstructure, tensile strength and fracture behavior of unidirectional C/C composites were investigated. Results showed that although the in-situ fiber strength was deteriorated after the introduction of interfacial layer, tensile strength of the specimen was greatly improved by 38.5% compared with pure C/C composites without any treatment. The interfacial sliding stress sharply decreased, which was interpreted from finite element analysis and verified by Raman spectra. Therefore, the fracture behavior was changed from brittle fracture to multiple-matrix cracking induced non-linear mechanical behavior.Finally, the ultimate strength can be predicted by different models according to the interfacial sliding stress. Our research would provide a meaningful way to improve both strength and toughness of C/C composites. | Jiajia Sun Hejun Li Liyuan Han Qiang Song | 2019 | Journal of Materials Science & Technology2019，35，3： | 2 |
| 4 | Effact of YzO3 on the oxidation resistance of ZrSiOUSiC coating prepared by super- sonic plasma spraying technique for carbon/carbon composites 显示文摘 | Sun Can Li Hejun Luo Huijuan | 2013 | Surf Coat Tech2013，235，22： | 1 |
| 5 | From diamond to crystalline silicon carbonitride:effect of introduction of nitrogen in CH4/H2 gas mixture using MW-PECVD 显示文摘 | Fu Yongqing Sun Chang Q Du Hejun | 2002 | Surface and Coatings Technology2002，165，： | 1 |
| 6 | Toughness measurement of thin films: a critical review显示文摘 | Sam Zhang Deen Sun Yongqing Fu Hejun Du | 2004 | Surface & Coatings Technology2004，，1： | 1 |
| 7 | Toughness measurement of thin films: a critical review显示文摘 | Sam Zhang Deen Sun Yongqing Fu Hejun Du | 2004 | Surface & Coatings Technology2004，，1： | 1 |
| 8 | Toughening of hard nanostructural thin films: a critical review显示文摘 | Sam Zhang Deen Sun Yongqing Fu Hejun Du | 2004 | Surface & Coatings Technology2004，，1： | 1 |
| 9 | Thin Solid Films显示文摘 | Yongqing Fu Hejun Du Chang Q Sun | 2003 | 424:1072003，424，： | 1 |
| 10 | Crystalline carbonitride forms harder than the hexagona Si-carbonitride crystallite显示文摘 | Chang Q Sun Hejun Du | 2001 | J Phys D: Appl Phys2001，34，： | 1 |
| 11 | Microstructure of the pyrocarbon matrix prepared by the CLVI process显示文摘 | Sun Wanchang Li Hejun Han Hongnei | 2004 | Materials Science and Engineering A2004，369，： | 1 |
| 12 | QTL Detection for Albinism-Related Loci in Chinese Tongue Sole(Cynoglossus semilaevis)显示文摘The Chinese tongue sole(Cynoglossus semilaevis) is widely cultured in the coastal region of East Asia and has excellent economic value. However, the high albino rate of the breeding population has caused a significant loss to the aquaculture industry. To study the molecular mechanism of albinism, the present study used an albino Chinese tongue sole family to construct three simple sequence repeat(SSR) linkage groups, and draft a preliminary linkage map related to albinism. After albinism-related loci mapping, 18 albinism-related loci were detected under two models(containing 2407 genes) compared to the Chinese tongue sole genome. One of these loci, the tyrosinase related protein(tyrp2), which has been reported previously as an important gene regulating both eumelanin and phaeomelanin levels, was indicated to be the possible cause of albinism. Thirty-five Gene Ontology(GO) terms and 14 Kyoto Encyclopedia of Genes and Genome pathways were annotated via bioinformatic analyses. One GO term with protein tyrosine kinase activity, which contained 10 genes, was previously suggested to affect fish albinism. These results establish a foundation for further in-depth study of albinism in Chinese tongue sole. | LIU Yang XU Wenteng ZHANG Bo SHAO Changwei WANG Xiaoxia SUN Hejun WANG Na CHEN Songlin | 2018 | Journal of Ocean University of China2018，17，6： | 1 |
| 13 | SiIicon carbide coating to protect carbon/carbon composites against oxidation显示文摘 | Fu Qiangang Li Hejun Shi Xiaohong Li Kezhi Sun Guodong | 2005 | Seripta Materialia2005，52，9： | 1 |
| 14 | From diamond to crystalline silicon carbonitride: effect of introduction of nitrogen in CH4/H2 gas mixture using MW-PECVD 显示文摘 | Fu Yongqing Sun Chang Q Du Hejun | 2002 | Surface and Coating Technology2002，165，： | 1 |
| 15 | Enhanced photoelectrochemical water-splitting effect with a bent ZnO nanorod photoanode decorated with Ag nanoparticles显示文摘 | Yuefan Wei Lin Ke Junhua Kong Hong Liu Zhihui Jiao Xuehong Lu Hejun Du Xiao Wei Sun | 2012 | Nanotechnology2012，，23： | 1 |
| 16 | Microstructure of the pyrocarbon matrix prepared by the CLⅥ process显示文摘 | Sun Wanchang Li Hejun Han Hongmei | 2004 | Materials Science and Engineering:A2004，369，12： | 1 |
| 17 | Synthesis of PMA/Eu_2O_3 porous-layered nanocomposite by in situ polymerization and its morphology显示文摘PMA/Eu_2O_3 多孔、分层的 nanocomposite 被准备由在 situpolymerization 并且借助于 X 光检查衍射(XRD ) 描绘了,传播电子显微镜学(TEM ) ,扫描电子显微镜(SEM ) ,和红外线的光线(红外) 。nanocomposite 的 Microscopicinvestigation 被原子力量显微镜学(AFM ) 执行。结果证明形状合成分层、多孔。Eu_2O_3 是 grafted 什么时候 methylacrylate (麻省) polymerized;因此, Eu_2O_3 粒子出现在压克力吃了的聚合甲基(PMA ) 的链的双方上。 | MO Zunli LIU Yanzhi WANG Kunjie LI Hejun CHEN Hong SUN Yinxia | 2006 | Rare Metals2006，25，1： | 0 |
| 18 | Inequalities of Eigenvalues for the Dirac Operator on Compact Complex Spin Submanifolds in Complex Projective Spaces显示文摘为紧缩的复杂旋转歧管有 holomorphic 的 M 等轴的嵌入直到复杂射影的空间,作者从上面获得外来的估计;在下面为迪拉克操作员,它取决于 M 的等轴的嵌入的数据的特征值。进一步从特征值的不平等,特征值的差距;特征值的比率被获得。 | Daguang CHEN Hejun SUN | 2008 | Chinese Annals of Mathematics,Series B2008，29，2： | 0 |
| 19 | Molecular Dynamics and Preparation of HO-PAMAM-2.5G Protected Lanthanum Cluster显示文摘HO-PAMAM-2.5 G-protected lanthanum cluster was studied by Virtual Molecule(VM) software. Molecular dynamics (MD) simulation of the nanocomposite system was performed from the view-points of molecular structure and energy′s fluctuation in NVT system. The motivation of this work was to understand the stability and mechanism of the nanocomposite in different proportion. The molecular dynamics simulation results reveal that when the quantity of La in per HO-PAMAM-2.5G amounted to 0~60, the radius of gyration of HO-PAMAM-2.5/La nanocomposite is obviously decreased. The potential energy (PE) that determines the stability of nanocomposite is different according to the quantity of La. The energy of the nanocomposite fluctuated clearly within the range of 0~50 La atoms and this fluctuation gradually tends to flatness in 50~80. While the quantity of La reaches 60, the energy of the nanocomposite drops to the lowest point, the system is steady relatively. Whereafter, according to the simulation results, HO-PAMAM-2.5 G-protected lanthanum clusters were prepared and characterized by transmission electron microscopy (TEM). The result is consistent with MD simulation. | Mo Zunli Liu Yanzhi Chen Hong Sun Yaling Sun Wanhong Sun Yinxia Li Hejun | 2006 | Journal of Rare Earths2006，24，1： | 0 |
| 20 | Preparation and characterization of Li_2Mo_(0.9)La_(0.2)O_4 anode material显示文摘La-doped Li2Mo0.9La0.2O4 was synthesized as an active anode material via the sol-gel process. The structural and morphological characteristics of the target product and the precursor were analyzed by XRD, SEM, and TG-DTA. Crystal started to format at 300°C and the optimum crystal structure was obtained at 700°C. By detecting battery performance, the charged and discharged platform was over 3.6 V; the anode exhibited a discharge capacity decay of 2% from its initial ca-pacity (165 mA?h/g) after 20 cycles. Therefore, it was a perfect anode material. | MO Zunli CHEN Hong SUN Yaling LIU Yanzhi LI Hejun LIU Yongzhong | 2006 | Rare Metals2006，25，3： | 0 |
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