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Improved properties of carbon fiber paper as electrode for fuel cell by coating pyrocarbon via CVD method XIE Zhi-yong(谢志勇), JIN Gu-yin(金谷英), ZHANG Min(张 敏) , SU Zhe-an(苏哲安), ZHANG Ming-yu(张明瑜... as the precursor, and coating it with pyrocarbon by pyrolyzing propylene via the chemical vapor deposition (CVD) method. For comparison, conventional carbon paper composites were also prepared......
on room temperature Z direction thermal conductivity of C/C composites is achieved by better interfacial properties and formation of high-textured pyrocarbon that has better graphitizability and higher thermal conductivity than other types of pyrocarbon. Key words: carbon nanotubes(CNTs); C/C composites; thermal conductivity; pyrocarbon  ......
of the samples using different carbon sources increase firstly, and then decrease with the increase of deposition temperature. The textures of pyrocarbon using different carbon sources are medium... of sample possess 0.036 g/cm3 density grads, and the morphology of deposition surface is smooth. Key words: micro-positive pressure ICVI; carbon/carbon composite; hydrocarbon gas; pyrocarbon  ......
. Also, the pyrocarbon and thermal conductivity of carbon/carbon composites with different carbon fibers as preform were studied. The results show that M40 carbon fiber has the largest crystallite size... exhibits the best graphitization property, followed by T300 and then T700. The different microstructure and surface state of different carbon fibers lead to the different microstructures of pyrocarbon......
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Fabrication of Isotropic Pyrocarbon at 1400 ℃ by Thermal Gradient Chemical Vapor Deposition Apparatus郭领军State Key Laboratory of Thermostructure Composites Materials,Northwestern Polytechnical University摘 要:An experiment was designed to prepare isotropic pyrocarbon by thermal gradient chemical vapor deposition apparatus. The deposition was performed......
Trans. Nonferrous Met. Soc. China 22(2012) 2569-2577 Microstructures and formation mechanism of headstand pyrocarbon cones developed by electromagnetic-field-assisted CVD TU Chuan-jun1,2, HUANG..., Hunan University, Changsha 410082, China Received 9 July 2012; accepted 1 August 2012 Abstract: Novel headstand pyrocarbon cones (HPCs) with hollow structure were developed on the surfaces of pyrocarbon......
Micro-and Nano-structure Characterization of Isotropic Pyrocarbon Obtained via Chemical Vapor Deposition in Hot Wall ReactorKezhi Li,Dongsheng Zhang,Lingjun Guo and Hejun Li State Key Laboratory...).Raman spectroscopy was also applied to characterizing the structure of the product.The results show that the density of the product is about 1.31 g/cm3.The pyrocarbon consists of granular particles......
X-ray Diffraction and Raman Spectroscopy Characterization of Isotropic Pyrocarbon Obtained by Hot Wall Chemical Vapor Deposition张东生,LI kezhi,JIA Yan,GUO Lingjun,LI Hejun,LU JinhuaState Key Laboratory of Solidification Processing, Northwestern Polytechnical University摘 要:Varying the flow rate of natural gas from 50 to 80 to 120 l/h, isotropic pyrocarbon......
Nano-Composite Superfine Nickel Powder Double Absorbent Coating Designing () 摘要:We adopt a definite procedure to compound traditional absorbing material-superfine powder nickel and nano -SiC... material, but each component of the composite material must have matched electromagnetic parameter with another. For matching double-coating structure, it ought to modulate the correlativity of each......