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| 1 | Brazing of C/C composite and Ti-6Al-4V with graphene strengthened AgCuTi filler:Effects of graphene on wettability,microstructure and mechanical properties显示文摘Graphene nanosheets(GNSs) strengthened AgCuTi composite filler(AgCuTi_G) was used to braze C/C composite and Ti-6Al-4V. The effects of GNSs on the wettability of AgCuTi_G filler on the C/C composite surface and the interfacial microstructure and mechanical properties of brazed joints were investigated. The results indicate that the addition of GNSs reduced the wettability of AgCuTi_G. The interfacial microstructure of brazed joints evolved with the addition of GNSs, where Ti_3Cu_4 and TiCu_4 were converted to TiCu and the thickness of the reaction layer adjacent to the base material decreased. The maximum shear strength of joints brazed at 0.3 wt% GNSs was 23.3 MPa(880℃/10 min). Further adding GNSs deteriorated the shear strength of the joints. Fracture of the joints occurred in the C/C composite substrate and the TiC layer adjacent to C/C composite. | Duo LIU Yanyu SONG Yinghao ZHOU Xiaoguo SONG Wei FU Jicai FENG | 2018 | Chinese Journal of Aeronautics2018，31，7： | 11 |
| 2 | Vacuum brazing of GH99 superalloy using graphene reinforced BNi-2 composite filler显示文摘A novel graphene reinforced BNi-2 composite filler was developed for brazing GH99 superalloy. The interfacial microstructure of brazed joints was analyzed by field emission scanning electron microscope and a transmission electron microscope. The effects of graphene addition on the microstructure evolution and mechanical properties of brazed joints were investigated, and the strengthening mechanism of graphene was analyzed. The results revealed that due to the addition of graphene, M23(C,B)6 compounds were synthesized in the solid solution and brittle boride precipitates near the brazing seam decreased.Graphene was effective in retarding solute atoms diffusion thus impeding the precipitation of borides.Furthermore, the low coefficient of thermal expansion(CTE) of graphene was conducive to relieve stress concentration of the brazed joints during the cooling process. The shear strengths of brazed joints were significantly improved by exerting the strengthening effect of graphene. The maximum shear strengths of the brazed joints were 410.4 MPa and 329.7 MPa at room temperature and 800?C, respectively. | Duo Liu Yanyu Song Bin Shi Qi Zhang Xiaoguo Song Hongwei Niu Jicai Feng | 2018 | Journal of Materials Science & Technology2018，34，10： | 10 |
| 3 | Analysis of Tianchi volcano activity in Changbai Mountain,NE China显示文摘Changbaishan volcano is the largest potential eruptive volcano in China.In this paper,seismic activity,horizontal displacement,vertical displacement and the fluid geochemistry data acquiring from Changbaishan Tianchi Volcano Observatory(TVO) in recent years are analyzed.The authors discussed the ability for the Changbaishan volcanic seismic monitoring and active level of Changbaishan volcano in recent years based on the fundamental monitoring results.The results show that Changbaishan volcano has experienced an unrest episode from 2002 to 2005,but its active level recovers to the background now. | LIU Guoming YANG Jingkui WANG Lijuan SUN Jicai | 2011 | Global Geology2011，14，1： | 7 |
| 4 | Different effects of foliar application of silica sol on arsenic translocation in rice under low and high arsenite stress显示文摘Foliar application of Si can generally reduce As translocation from roots to shoots in rice;however, it does not always work, particularly under high As stress. Here, the effects of foliar application of nanoscale silica sol on As accumulation in rice were investigated under low(2 μmol/L) and high(8 μmol/L) arsenite stress. The results revealed that foliar Si application significantly decreased the As concentration in shoots under low arsenite stress, but showed different effects under high arsenite stress after 7 days of incubation. The reduction in root-to-shoot As translocation under the 2 As + Si treatment was related to the down-regulation of Os Lsi1 and Os Lsi2 expression and up-regulation of Os ABCC1 expression in roots. In the 8 As + Si treatment, the expressions of Os Lsi1, Os Lsi2, and Os ABCC1 were significantly promoted, which resulted in substantially higher As accumulation in both the roots and shoots. In the roots, As predominantly accumulated in the symplasts(90.6%–98.3%), in which the majority of As was sequestered in vacuoles(79.0%–94.0%) under both levels of arsenite stress. Compared with that of the 8 As treatment, the 8 As + Si treatment significantly increased the As concentration in cell walls, but showed no difference in the vacuolar As concentration, which remained constant at approximately 69.1–71.7 mg/kg during days 4–7. It appeared that the capacity of root cells to sequester As in the vacuoles had a threshold, and the excess As tended to accumulate in the cell walls and transfer to the shoots via apoplasts under high arsenite stress. This study provides a better understanding of the different effects of foliar Si application on As accumulation in rice from the view of arseniterelated gene expression and As subcellular distribution in roots. | Dandan Pan Chuanping Liu Jicai Yi Xiaomin Li Fangbai Li | 2021 | Journal of Environmental Sciences2021，33，7： | 3 |
| 5 | Microstructure characterization of electron beam welded joints of Ti_3Al after post-weld heat treatment显示文摘The effect of post-weld heat treatment on the microstructure characterization of electron beam welded(EBW) joints of Ti3Al-Nb was investigated.The results show that the microstructure of the weld is predominantly metastable,the columnar crystal metastructure of B2 phase.The microstructure morphology of the weld is significantly influenced by the method of the heat treatment.The microstructure of the weld is laminar structure(Widmanstaten structure) consisted of interphase α2 and B2 after post-weld heat treatment of 1000 ℃/2 h.The mechanism of the post-weld heat treatment makes the hardness distribution of joints homogeneous,but makes the whole joint somehow softened. | HE Jingshan,WU Qingsheng,ZHANG Binggang,LIU Wei,and FENG Jicai State Key Laboratory of Advanced Welding Production Technology,Harbin Institute of Technology,Harbin 150001,China | 2007 | Rare Metals2007，26，S1： | 3 |
| 6 | The effects of two free-floating plants (Eichhornia crassipes and Pistia stratiotes) on the burrow morphology and water quality characteristics of pond loach (Misgurnus anguillicaudatus) habitat显示文摘Loach exhibit conspicuous drilling behaviors in the mud of shallow waters,yet their burrow morphology and the factors affecting this behavior have received little attention.We characterized the burrow morphology and water quality of the pond loach Misgurnus anguillicaudatus in three scenarios:in tanks without plants,tanks with the free-floating plant water hyacinth Eichhornia crassipes,and tanks with water lettuce Pistia stratiotes.Water hyacinth effectively removed water TN,COD,NO3-N and NH4-N,and water lettuce removed water TP and NH4-N.Water hyacinth and water lettuce markedly reduced water turbidity and DO,increased TOC and EC.Water hyacinth purified water more effectively than water lettuce,providing a suitable habitat for loach feeding,living and burrowing.The burrow structures were V-shaped,Y-shaped,inverted L-shaped,or complicated dendritic networks composed of multiple V shapes.The hyacinth treatment was characterized by the greatest burrow volume,length,depth,and structural complexity,but the opening size was reduced by dense root mat coverage.Burrows in the water lettuce treatment were characterized by intermediate volume,length,branches and sinuosity,but they had the largest opening and pit size.The control treatment had a flat bottom with the smallest,shortest burrows.This study indicates that free-floating plants improve habitat suitability and change burrow morphology and may be used to improve loach breeding methods。 | Jinqing Wang Guihua Fu Weiyue Li Ying Shi Jicai Pang Qiang Wang Weiguang Lü Change Liu Jiansheng Liu | 2018 | Aquaculture and Fisheries2018，3，1： | 2 |
| 7 | Friction stir welding characteristics of different heat-treated-state 2219 aluminum alloy plates显示文摘 | Chen Yingchun Liu Hui jie Feng Jicai | 2006 | Materials Science and Engineering2006，420，1： | 1 |
| 8 | Real option application in PPP/PFI project negotiation显示文摘 | Jicai Liu Charles Y. J. Cheah | 2009 | Construction Management and Economics2009，，4： | 1 |
| 9 | Effect of zigzag line on the mechanical properties of friction stir welded joints of A1-Cu alloy显示文摘 | Liu Huijie Chen Yingchun Feng Jicai | | 0，，55： | 1 |
| 10 | Long-term effect of stenting in unprotected left main coronary artery disease in the elderly显示文摘To evaluate the feasibility, safety and efficacy of percutaneous stent implantation for treating left main coronary artery (LMCA) stenosis. Methods Consecutive patients with unprotected left main coronary artery disease treated by stent-based percutaneous intervention (PCI) at 6 medical centers in China were enrolled. Procedural data and clinical outcomes were obtained from all patients. Results From January 2001 to December 2004, 138 patients (79 males and 59 females; mean age: 69.7±5.8 years)underwent PCI for LMCA stenosis. Bare metal stents (BMS) were implanted in 51 patients with non-bifurcational lesions and in 5 patients with bifurcational lesions from January of 2001 to June of 2003 (BMS group);. Drug eluting stents (DES) were used unselectively to cover both bifurcational and non-bifurcational lesions in 86 patients from July of 2003 to December of 2004 (DES group). Procedural success rate of the 138 cases was 98% (135/138). One patient (0.7%) with bifurcation lesion who was treated with DES died from severe heart failure 2 weeks after the procedure. During a mean follow up period of 21.3 ± 5.6 months, one patient died from renal failure, one from sudden cardiac death, 4 underwent target lesion revascularization (TLR) in the BMS group, which all occurred in patients with bifurcational lesions; whereas in the DES group no deaths occurred and only one patient with bifurcational lesion had TLR. Conclusions (1) PCI is feasible and relatively safe to treat unprotected left main coronary artery disease in elderly patients at medical centers with experienced professionals. (2) BMS and DES have similar immediate and long-term efficacy in the treatment of ostium and shaft lesions of the LMCA. (3) DES are strongly suggested in the therapy of distal bifurcation lesion of unprotected LMCA. | Caiyi LU Shiwen WANG Lingling LIU Qiao XUE Xinli WU Taohong HU Pingshuan DONG Zhiping WANG Shenfang TIAN Pinfa LIU Jicai ZANG | 2005 | Journal of Geriatric Cardiology2005，2，4： | 1 |
| 11 | Numerical simulation on the shape of liquid surface of TIG full-penetrated weld pool显示文摘Based on the analysis of the three-dimensional liquid surface behavior of TIG penetrated weld pool,the three-dimensional shape models of weld pool with different values of the back fusion zone radius RB were obtained.The effects of arc on the penetrated weld pool were studied by numerical simulation with finite elements analysis software Surface Evolver.The results show that the size and shape of the back weld pool are not affected obviously by the arc,and the top surface of the weld pool is lowered by arc.From pulse background to pulse peak,the increase of the arc voltage(or the arc light intensity) is due to two factors.One is the increase of the current,and the other is the lowering of the top weld pool | HE Jingshan,LIU Wei,ZHANG Binggang,WU Qingsheng,and FENG Jicai State Key Laboratory of Advanced Welding Production Technology,Harbin Institute of Technology,Harbin 150001,China | 2007 | Rare Metals2007，26，S1： | 1 |
| 12 | Valuing governmental support in infrastructure projects as real options using Monte Carlo simulation显示文摘 | Charles Y. J. Cheah Jicai Liu | 2006 | Construction Management and Economics2006，，5： | 1 |
| 13 | Interface structure and formation mechanism of diffusion-bonded SiC/TiAl joint显示文摘 | Liu Huijie Feng Jicai Qian Yiyu Li Zhuoran | 1999 | Journal of Materials Science Letters1999，，13： | 1 |
| 14 | Friction stir welding characteristics of different heat-treat-state 2219 aluminum alloy plates显示文摘 | ChenYingchun Liu Huijie Feng Jicai | 2006 | Materials Science and Engineering2006，420，： | 1 |
| 15 | Microstructure and strength of vacuum brazed joints of TiAl - based alloy to 40Cr steel 显示文摘 | Liu Huijie Feng Jicai | 2002 | Materials Science and Technology2002，18，9： | 1 |
| 16 | Interface structure and formation mechanism of diffusion-bonded SiC/TiAl joint显示文摘 | Liu Huijie Feng Jicai Qian Yiyu Li Zhuoran | 1999 | Journal of Materials Science Letters1999，，13： | 1 |
| 17 | Diffusion bonding of SiC ceramic to TiAl-based alloy显示文摘 | Liu Huijie Feng Jicai | 2001 | Journal of Materials Science Letters2001，，9： | 1 |
| 18 | Valuing Governmental Support in Infrastructure Projects as Real Options Using Monte Carlo Simulation显示文摘 | Charles Y J Cheah Jicai Liu | 2006 | Construction Management&Economics2006，24，5： | 1 |
| 19 | Interface structure and formation mechanism of diffusion - bonded joints of SiC ceramic to TiAl- based alloy 显示文摘 | Liu Huijie Feng Jicai Qian Yiyu | 2000 | Scripta Materialia2000，43，1： | 1 |
| 20 | Vacuum brazing TiAl-based alloy to 40Cr steel using Ag-Cu-Zn filler metal显示文摘 | Liu Huijie Feng Jicai | 2002 | Journal of Materials Science Letters2002，21，1： | 1 |
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