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| 1 | Preparation and arc erosion properties of Ag/Ti_2SnC composites under electric arc discharging显示文摘New Ag/Ti_2 SnC(Ag/TSC) composites with uniform microstructure were prepared by powder metallurgy. The superior wettability between Ag and Ti_2 SnC was confirmed with a contact angle of 14°. Arc erosion properties of Ag/10 wt%Ti_2 SnC(Ag/10 TSC) and Ag/20 wt%Ti_2 SnC(Ag/20 TSC) contacts were investigated under 400 V/100 A/AC-3 and compared with Ag/CdO contact.The Ag/10 TSC contact exhibited comparable arc erosion property to Ag/CdO contact. The fine arc erosion resistance was attributed to the good wettability between Ti_2 SnC and Ag,the good heat-conducting property of Ag/10 TSC, and the slight decomposition of Ti_2 SnC that absorbed part of electric arc energy. The excessive Ti_2 SnC significantly decreased the thermal conducting property of the Ag/20 TSC composite, resulting in the severe heat accumulation that decomposed Ti_2 SnC and deteriorated arc erosion property. The oxidation behavior of Ti_2 SnC under high electric arc temperature was also studied and then an arc erosion mechanism was proposed to get a comprehensive understanding on the arc erosion property of Ag/TSC composites. | Jianxiang DING Wubian TIAN Peigen ZHANG Min ZHANG Jian CHEN Yamei ZHANG Zhengming SUN | 2019 | Journal of Advanced Ceramics2019，8，1： | 9 |
| 2 | Slip casting and pressureless sintering of Ti3AlC2显示文摘Slip casting and subsequent pressureless sintering(PLS)allow the preparation of complex-shaped and large-sized Ti3AlC2 components for many potential applications.The behaviors of the suspensions,green compacts,and sintered samples of Ti3AlC2 were studied in this paper.The optimized condition of 1 wt%of arabic gum as dispersant at pH=10 results in a Ti3AlC2 suspension for slip casting Ti3AlC2 green compacts without macro defects or cracks.The sintering temperature and Al4C3 embedding powder are found to dominate the properties of the sintered Ti3AlC2 samples.The Ti3AlC2 sample sintered at 1450℃for 1.5 h with Al4C3 embedding powder reaches the best properties,namely 95.3%relative density,hardness of 4.18 GPa,thermal conductivity of 29.11W·m-1·K-1,and electrical resistivity of 0.39μΩ·m.The findings in this work may pave the way for the application of MAX phases with large size and complex shape. | Yimin GONG Wubian TIAN Peigen ZHANG Jian CHEN Yamei ZHANG Zhengming SUN | 2019 | Journal of Advanced Ceramics2019，8，3： | 6 |
| 3 | Shell powder as a novel bio-filler for thermal insulation coatings显示文摘The feasibility of employing shell powder as a novel bio-filler to prepare fluorocarbon coating is demonstrated.According to the relevant Chinese standards, the thermal and mechanical properties of the shell powder-filled fluorocarbon coating were evaluated, and compared with those filled by commercial calcium carbonate. All the shell powder-filled coatings can meet the requirements stated in the relevant standards, and with decreasing the particle size of the shell powders, the performance of the thermal insulation coating is enhanced. The coating(SC3) filled by shell powders with an average particle size of 2.81 μm possesses a better thermal insulation performance than the coating(CC) filled by commercial calcium carbonate. The coating SC3 has comparable adhesive force and washing resistance with the coating CC, and in the washing resistance test, after 2000 cycles, the coating SC3 was still able to cover totally their substrates. This work demonstrates a high value-added disposal method for the aquacultural wastes. | Peigen Zhang Jingwen Tang Qiang Tang Minzhao Zhang Luwei Shen Wubian Tian Yamei Zhang Zhengming Sun | 2019 | Chinese Journal of Chemical Engineering2019，27，2： | 2 |
| 4 | Synthesis and characterization of Cr 2 AlC ceramics prepared by spark plasma sintering显示文摘 | Wubian Tian Kim Vanmeensel Peiling Wang Guojun Zhang Yongxiang Li Jozef Vleugels Omer Van der Biest | 2007 | Materials Letters2007，，： | 1 |
| 5 | Spontaneous Ga whisker formation on FeGa_3显示文摘FeGa_3 has attracted considerable attention as potential material for many fields, whereas the whiskering phenomenon may cast doubts on its applications. Spontaneous Ga whisker formation was observed on the ballmilled FeGa_3-Ga. The sample made from ball-milled FeGa_3 powders free of elemental Ga are immune to the Ga whisker formation, even if all the processing parameters were the same as the FeGa_3-Ga composite sample. In addition, several nano-sized Ga whiskers were found on the pressed FeGa_3-Ga composite without ball milling,and the as-synthesized FeGa_3-Ga grew only tiny Ga balls on the surface. These whiskering phenomena do not follow the traditional metal whisker formation mechanisms. A newly proposed catalysis-based mechanism, in which the cleavage planes of FeGa_3 grains act as heterogeneous nucleation sites and the elemental Ga provides Ga atoms for whisker formation, is employed to explain Ga whisker formation on FeGa_3. | Yushuang Liu Peigen Zhang Li Yang Wubian Tian Yamei Zhang Zhengming Sun | 2018 | Progress in Natural Science:Materials International2018，28，5： | 1 |
| 6 | Connexin 43 Reverses Malignant Phenotypes of Glioma Stem Cells by Modulating E‐Cadherin显示文摘 | Shi‐CangYu Hua‐LiangXiao Xue‐FengJiang Qing‐LiangWang YanLi Xiao‐JunYang Yi‐FangPing Jiang JieDuan Jian‐YongJiang Xian‐ZongYe Sen‐LinXu Yang‐HongXin Xiao‐HongYao Jian‐HongChen Wei‐HuaChu WeiSun BingWang Ji MingWang XiaZhang Xiu‐WuBian | 2012 | STEM CELLS2012，，2： | 1 |
| 7 | Mechanism and mitigation of spontaneous Ga whisker growth on Cr2GaC显示文摘Spontaneous growth of A-element whiskers on Mn+1AXn(MAX for short) phase materials poses a barrier to their practical applications, since it casts doubts on their stability. In this study, Ga whisker growth on sintered Cr2GaC samples was investigated. The elemental source for spontaneous growth of Ga whiskers is identified as the free Ga contained in the Cr2GaC material, not the lattice atoms from Cr2GaC grains, which removes the doubts on the stability of Cr2GaC material. The growth behavior and morphologies of the Ga whiskers follow a new catalysis-based model, with cleavage planes of Cr2GaC grains involved as nucleation sites. This model explains and predicts well the growth behavior of the whiskers. The mitigation strategy based on this model is in principle simple: to prevent free Ga in Cr2GaC material or limit it to a certain level;to avoid cleavage plane of Cr2GaC grains;to achieve high density of the Cr2GaC material. | ZHANG PeiGen DING JianXiang LIU YuShuang YANG Li TIAN WuBian OUYANG Jian ZHANG YaMei SUN ZhengMing | 2020 | Science China(Technological Sciences)2020，63，3： | 1 |
| 8 | 显示文摘 | PANGTao XIAHua wuBian etal(庞涛 夏滑 吴边 等) | 2015 | 光电子.激光2015，3，： | 1 |
| 9 | Reaction joiningof SiC Ceramics using TiB2-based composites显示文摘 | Tian Wubian Kita Hideki Hyuga | 2010 | Journalof European Ceramic Society2010，30，： | 1 |
| 10 | Effectof carbon nanotubes on the properties of ZrB2 - SiC ce- ramics 显示文摘 | Tian Wubian Yan Meikan Zhang Guojun | 2008 | Materials Science and Engineering: A2008，487，12： | 1 |
| 11 | Synthesis and characterization of Cr2A1C ceramics prepared by spark plasma sintering 显示文摘 | Tian Wubian Kim Vanmeensel Wang Peiling | 2007 | Materials Letters2007，61，： | 1 |
| 12 | Synthesis and thermal and electrical properties of bulk Cr2AlC显示文摘 | TIAN Wubian WANG Peiling KAN Yanmei | 2006 | Scripta Materialia2006，54，5： | 1 |
| 13 | Microstructural evolution and mechanical properties of Ti 3 SiC 2 –TiC composites显示文摘 | WuBian Tian ZhengMing Sun Hitoshi Hashimoto YuLei Du | 2010 | Journal of Alloys and Compounds2010，，1： | 1 |
| 14 | Selective growth of tin whiskers from its alloys on Ti_(2)SnC显示文摘The spontaneous growth of metal whiskers has been investigated for more than 70 years.However,there is still no agreement on its growth mechanism,and moreover,new characteristics of this whiskering phenomenon continue to emerge.In this study,Ti_(2)SnC is found to be capable of extracting Sn out of its alloys(Sn Bi,Sn Ag)by selectively growing Sn whiskers,and the Sn whiskers share the features of the traditional whiskers on platings and solders.Replacing the Ti_(2)SnC substrate with Ti C or Si C,under the same conditions,however,the selective growth of Sn whisker does not happen,which means Ti_(2)SnC plays a critical role in it.Based on the unique crystal structure of Ti_(2)SnC,active Sn atoms diffusing through the basal planes of Ti_(2)SnC is proposed to explain the selectivity.The driving force is suggested to be the high interfacial energy between Ti_(2)SnC and tin.This study is of importance to further understand the growth mechanism of metallic whiskers,and it may be also possible to be harnessed to develop paradigm-shifting technologies of metal purification and metallic whisker/nanowire preparation. | Jingwen Tang Peigen Zhang Yushuang Liu Chengjie Lu Yan Zhang Wei He Wubian Tian Wei Zhang Zhengming Sun | 2020 | Journal of Materials Science & Technology2020，54，19： | 0 |
| 15 | A Robust Algorithm for Real-time Endpoint Detection in the Noisy Mobile Environments显示文摘In speech recognition, the endpoint detection must be robust to noise. In low SNR situations, the conventional energy-based endpoint detection algorithms often fail and the performance of speech recognizer usually degrades distinctly, especially when in mobile environments, the background noise changes dramatically. In this paper, we propose a new algorithm that improves the endpoint detection for speech recognition in low SNR and in various noisy environments. The described algorithm not only uses multiple features but introduces a decision logic to increase the robustness in both low SNR and various noisy mobile environments. To evaluate the new algorithm, we carry out experiments in various noisy mobile environments (e.g. railway station, airport, street etc), and the performance of the algorithm is significantly improved, especially in low SNR situations. At the same time, the proposed algorithm has a low complexity and is suitable for real time embedded systems. | WUBian RENXiaolin LIUChongqing ZHANGYaxin | 2003 | Chinese Journal of Electronics2003，12，4： | 0 |
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