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satisfy the requirements of the solid rocket nozzle throat. Compared to other throat materials, 2D Cf/SiC-Cu composites has lower density and better ablative properties. Key words: 2D Cf/SiC-Cu... Cf/SiC-Cu材料的制备 Fig.1 Fabrication of 2D Cf/SiC-Cu composite 表1 几种喉衬材料的密度与力学性能[3-12] Table 1 Density and mechanical properties of several throat materials[3-12] 图2 2D Cf......
Microstructure and mechanical properties of 2D woven Grf/Al composite ZHANG Yun-he(张云鹤)1,2, WU Gao-hui(武高辉)1, CHEN Guo-qin(陈国钦)1, XIU Zi-yang(修子扬)1, ZHANG Qiang(张 强)1, WANG Chun-yu(王春雨)1 1. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China; 2. School of Electromechanical Engineering, Northeast Forestry University, Harbin 150040, China......
obtained the two-dimensional (2D) graphene after mechanical stripping, the outstanding photoelectric and mechanical properties of 2D materials have attracted wide interest of researchers [17-21]. Recent studies have shown that 2D materials have excellent nonlinear optical properties and ultra-fast dynamics [22-27]. SSPM is mostly used to study the nonlinear refractive index of 2D materials [28-30......
描.采用VG-Studio Max 3.0及MATLAB软件对图像进行分析,研究垃圾孔隙结构特征,并基于垃圾土的饱和渗流模型,对其渗流特性进行探讨.研究结果表明:CT图像可准确识别垃圾结构特征；2D颗粒会影响孔隙通道的形成,进而使流动路径发生曲折,2D颗粒的定向排列是垃圾各向异性的根本原因；随着荷载增大,大孔隙逐渐转变为小孔隙,孔隙累积分布曲线左移,孔隙排列角度也趋于水平化；垃圾颗粒尺寸会影响其渗透系数,尺寸越大,渗透系数也越大；渗透系数随着荷载增大而减小,各向异性则随着荷载的增加而增大；当荷载由0 kPa增大到500 kPa时,竖向渗透系数减小了4个数量级,水平向渗透系数减小了3个数量级. 关键词:城市固体废弃物(MSW)；CT；垃圾结构；渗透特性；孔隙分布；2D颗粒；各向异性 中图分类号:TU411 ......
ARTICLE J. Cent. South Univ. (2019) 26: 1510-1520 DOI: https://doi.org/10.1007/s11771-019-4107-6 Synthesis and characterization of Na0.44MnO2 nanorods/graphene composite as cathode materials... Cooperation, National Local Joint Engineering Laboratory for Key Materials of New Energy Storage Battery, Hunan Province Key Laboratory of Electrochemical Energy Storage and Conversion, Key Laboratory......
J. Cent. South Univ. (2016) 23: 2520-2525 DOI: 10.1007/s11771-016-3312-9 Froth flotation of refuse coal fines and process optimization using 2D surface plots Shravan Kumar, Veomesh Rawat Department... density, collector and frother dosage. Results were discussed using 2D surface plots. Response function predictions determined by the regression analysis show coefficient of correlation (R2) for yield......
2D MoS2/高分子纳米复合材料的研究进展杨海艳,熊继军,杜栓丽,陈晓勇,李延斌中北大学摘 要:二维二硫化钼(2D MoS2)是石墨烯之后研究最热的二维材料之一,具有石墨烯类二维材料优异的力学性质和独特的带隙,催化特性,是高分子基纳米复合材料研究的热门材料之一.文中简介了2D MoS2的微观结构,宏观特性;梳理了2D MoS2/高分子纳米复合材料成型制备方法,主要有熔融共混,溶液共混和原位聚合3种,而原位聚合可以更好地保持2D MoS2在高分子基体中的分散性;总结了2D MoS2对高分子基体的改性效果,可以显著改进高分子材料的力学,耐热,阻燃,导电和介电等诸多性能,表明2D MoS2是一种高效的综合改性剂;分析了2D MoS2/高分子纳米复合材料在传感,监测,分离,环保,能源,健康医用等许多领域的应......
)的2D图形硬件加速引擎设计方案,将图形分解为一系列基本的点和水平线输出.为避免图形加速引擎直接对SDRAM的零碎操作导致的存储器操作瓶颈,引入图形缓存机制,并根据图形像素的存储特点,提出远区域优先(FAF)图形缓存页面淘汰算法.讨论图形加速引擎内部各模块的逻辑结构及其逻辑设计,在对模块进行波形仿真的基础上,实现系统级仿真结果的可视化验证.仿真及实际应用结果表明,所提出的图形加速引擎提高了图形显示性能,满足当前飞机中对2D图形实时显示及飞控系统的可靠性要求. 关键词:2D图形；硬件加速；图形缓存；现场可编程门阵列 中图分类号:TP394；TN61 文献标识码:A 文章编号:1672-7207(2008)05-1042-07......
文章编号:1004-0609(2015)-01-0158-07 2D结构V2O5材料的制备与储锂性能 李延伟,温胜山,姚金环,梁晓丽,张灵志 (桂林理工大学 化学与生物工程学院 广西矿冶与环境科学实验中心,桂林 541004) 摘 要:以商业化V2O5粉体和H2O2为原料,采用溶胶-凝胶法制备了V2O5凝胶,将V2O5凝胶稀释后进行冷冻干燥得到V2O5前驱体,最后在空气中450 ℃煅烧2 h得到正交晶系的V2O5样品.经过X射线衍射(XRD),热重分析(TGA)和场发射电子扫描电镜(FESEM)分析发现,V2O5前驱体是具有2D片状结构的V2O5·nH2O粉体,煅烧后转变为2D片状结构的正交晶系V2O5粉体.采用循环伏安(CV),电化学交流阻抗(EIS)和充放电测试研究了V2O5样品的Li+扩散系数,电化学反应阻抗,倍率性能和电化学循环稳定性,发现V2O5样品的Li+扩散系数......
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