材料期刊网

Fabrication of Carbon Nanotube-Reinforced 6061Al Alloy Matrix Composites by an In Situ Synthesis Method Combined with Hot Extrusion Technique

Chun-Nian He , Chao Feng , Ji-Chuan Lin , En-Zuo Liu , Chun-Sheng Shi , Jia-Jun Li , Nai-Qin Zhao

金属学报(英文版) doi:10.1007/s40195-016-0376-3

Carbon nanotube (CNT)-reinforced 6061Al alloy matrix composites were prepared by chemical vapor deposition (CVD) combined with hot extrusion technique. During the preparation process, the 6061Al flakes obtained by ball milling of the 6061Al spherical powders were subjected to surface modification to...

关键词: Metal , matrix , composites , (MMCs) , Microstructure , Mechanical , properties , Carbon

Crystallization Behavior of C-containing FINEMET Amorphous Alloy Melt-spun Ribbon

Chengdong LI , Xuelei TIAN , Xichen CHEN , A.G.Ilinsky , Likai SHI

材料科学技术（英文）

The crystallization kinetics of amorphous Fe¬¬68.5Si¬13.5B¬9Cu¬1Nb¬3C¬5 (at. pct) melt-spun ribbons were studied by the DSC method in the mode of continuous heating. The apparent activation energy Ep1 and Ep2 (373.07±7.92 and 518.75±21.35 kJ/mol, respectively) derived from the Kissinger plots were c...

关键词: Amorphous , null , null , null

Study on the Electromagnetic Interference of CFRC Composites by Reflectivity

Kezhi LI , Chuang WANG , Hejun LI , Gengsheng JIAO , Jian WEI

材料科学技术（英文）

The influence of dispersion of carbon fibers in carbon-fiber-reinforced cement-based composites (CFRC) on the mechanical properties of the composites was discussed. The microstructure of the fracture surface of the CFRC samples was observed with a scanning electron microscope (SEM). The electromagne...

关键词: Carbon fibers , fibers , Cement-based , EMI , Reflectiv

Recent Progress of Counter Electrodes in Nanocrystalline Dye-sensitized Solar Cells

Kexin LI , Zhexun YU , Yanhong LUO , Dongmei LI , Qingbo MENG

材料科学技术（英文）

Dye-sensitized solar cell (DSC) consists a combination of several different materials: photoanodes with nanoparticulated semiconductors, sensitizers, electrolytes and counter electrodes (CEs). Each materials performs specific task for the conversion of solar energy into electricity. The main functio...

关键词: Counter electrode , null , null , null

纳米结构的炭钌复合物-一种提高超级电容器性能的电极材料

崔光磊 , 周新红 , 智林杰 ,

新型炭材料 doi:10.3969/j.issn.1007-8827.2007.04.003

报道了一种利用氧化硅模板,裂解简单易得的含钌有机物制备纳米结构炭/钌复合物的方法.在该复合物中,钌纳米颗粒均匀地分布在多孔的炭基体中.该复合物被电氧化所得炭/RuO2·xH2O的超级电容性质明显提高(10 mV/s 时229 F/g ).

关键词: 电极 , 纳米材料 , 超级电容器 , 炭 , 钌

XRD Synchrotron Study of Carbide Precipitation in Martensitic Steels During Tempering

金属学报(英文版) doi:10.1007/s40195-013-0078-z

关键词:

Carbon and Nickel Oxide/Carbon Composites as Electrodes for Supercapacitors

材料科学技术（英文）

关键词: 碳复合材料 , 超级电容器 , 碳电极 , 氧化镍 , X-射线衍射技术 , 碳纤维复合材料 , 扫描电子显微镜 , 等离子体射流

碳催化剂用于异丁烷直接脱氢制异丁烯

李杨 , 张中申 , 王俊慧 , 麻春艳 , 杨洪玲 , 郝郑平

催化学报 doi:10.1016/S1872-2067(15)60914-7

异丁烯用途广泛,被认为是除乙烯和丙烯外最重要的基础化工原料.异丁烯的来源主要是石油裂化过程中产生的碳四馏分,但随着对其需求量的逐年增加,分离法已逐渐无法满足,因此异丁烷直接脱氢工艺逐渐受到工业界和学术界的重视.铬系和铂系催化剂是两类传统工业催化体系,但铬对环境污染严重,铂作为贵金属成本较高,而且现有...

关键词: 碳 , 直接脱氢 , 异丁烷 , 异丁烯 , 多相催化

甲醇浓度对Pt/C催化剂氧还原活性的影响

唐水花 , 林文锋 ,

催化学报 doi:10.1016/S1872-2067(11)60480-4

采用半池考察了Pt/C催化剂在含不同浓度甲醇的0.5 mol/L硫酸中的氧还原活性(ORR).研究发现,当甲醇浓度为0.1 mol/L时,Pt/C催化剂的ORR活性最高,在催化层上热压商品Nafion NRE-212膜后也出现同样趋势.线性扫描伏安曲线显示,压膜前后的Pt/C催化剂的ORR活性在含0...

关键词: 铂 , 炭 , 甲醇渗透 , 氧还原 , 燃料电池

锂在人造石墨、中间相炭微球及无定形碳中的扩散系数

郭华军 , 李新海 , 张新明 , 王红强 , 王志兴 , 彭文杰

新型炭材料 doi:10.3969/j.issn.1007-8827.2007.01.002

采用X-射线衍射及恒电位阶跃计时电流法测定了不同炭材料的结构及锂在这些炭材料中的扩散系数.发现炭电极的放电程度与结构对锂在炭电极中的扩散系数有重要影响.随着放电程度的增加,锂在MCMB电极中的扩散系数由4.43×10-9 cm2/s减少到5.24×10-10 cm2/s,在50%的放电程度下,锂在蔗...

关键词: 锂离子电池 , 扩散系数 , 阳极 , 炭 , 石墨