中国科技论文在线

上传时间

2009年03月20日

【期刊论文】New method of carbon onion growth by radio-frequency plasma-enhanced chemical vapor deposition

陈小华， X. H. Chen a， b， *， F. M. Deng b， J. X. Wang a， H. S. Yang b， G. T. Wu b， X. B. Zhang b， J. C. Peng a， W. Z. Li b

X. H. Chem et al. Chemical Physics Letters 336(2001)201-204，-0001，（）：

-1年11月30日

Large quantities of carbon onions with high purity were synthesized by radio-frequency plasma-enhanced chemical vapor deposition. The produced carbon onions are solid, clean and can be separated easily from the catalytic particles. The formation of onions is based on the formation of many cages in successive stages from the core to the surface. Around the edge of a carbon onion, discontinuous curved lines are shown in the high-resolution TEM image, reflecting the wavy behavior of carbon onions.

30浏览
0点赞
0收藏
0分享
71下载
0

引用

上传时间

2009年03月20日

【期刊论文】Lipophilic functionalization of multi-walled carbon nanotubes with stearic acid

陈小华， Xiao-Hua Chen*， Chuan-Sheng Chen， Han-Ning Xiao， Xian-Hong Chen， Wen-Hua Li， Long-Shan Xu

Letters to the Editor/Carbon 43(2005)1778-1814，-0001，（）：

-1年11月30日

摘要

Carbon nanotubes， Chemical treatment,， Coating， Infrared spectroscopy， Functional groups

24浏览
0点赞
0收藏
0分享
240下载
0

引用

上传时间

2009年03月20日

【期刊论文】Preparation, morphology and microstructure of segmented graphite nanofibers

陈小华， X. H. Chena， b*， J. X. Wanga， H. S. Yang b， G. T. Wub， X. B. Zhang c， W. Z. Li b

Diamond and Related Materials 10(2001)2057-2062，-0001，（）：

-1年11月30日

摘要

Vapor-grown of segmented graphite nanofibers were prepared by pyrolysis of acetylene at 600 800C using a foam Ni catalyst. Through transmission electron microscopy observation, it was found that this kind of nanofiber looks like a line of lens-like segments with nearly equal separation, which consist of well-ordered graphite platelets intermittently stacked perpendicularly to the filament axis. It was suggested that the catalyst particles adopting a thin slice shape and the flow rate of acetylene are critical for forming segmented graphite nanofibers. The formation mechanism of segmented graphite nanofibers has also been discussed.

Graphite nanofibers， Segmented structure， Preparation， Chemical vapor deposition

55浏览
0点赞
0收藏
0分享
51下载
0

引用

上传时间

2009年03月20日

【期刊论文】Electrodeposited nickel composites containing carbon nanotubes

陈小华， X. H. Chen*， F. Q. Cheng， S. L. Li， L. P. Zhou， D. Y. Li

Surface and Coatings Technology 155(2002)274-278，-0001，（）：

-1年11月30日

摘要

Nickel composites containing carbon nanotubes were prepared by codepositing carbon nanotubes uspended in an electrolyte with growing nickel during electrodeposition. There is a saturation concentration for dispersing carbon nanotubes completely in the solution. Carbon nanotubes codeposition was found to reach a maximum and then decrease with carbon nanotubes concentration in the solution, current density and agitation rate. The microstructure of the coatings have been examined by electron microscopy.

Carbon nanotubes， Nickel， Composite， Coatings， Electrodeposition

36浏览
0点赞
0收藏
0分享
213下载
0

引用

上传时间

2009年03月20日

【期刊论文】Corrosion behavior of carbon nanotubes-Ni composite coating

陈小华， X. H. Chen*， C. S. Chen， H. N. Xiao， F. Q. Cheng， G. Zhang， G. J. Yi

Surface & Coatings Technology 191(2005)351-356，-0001，（）：

-1年11月30日

摘要

Ni-carbon nanotube (CNTs) composite coatings were deposited on a carbon steel by electrodeposition. The effect of incorporation of CNTs into the nickel coating on the morphology of the coating surface and corrosion properties was investigated. Scanning electron microscopy (SEM) showed that the CNTs appear well dispersed in the nickel layer. Corrosion tests were performed in aqueous NaCl (3.5wt.%) using a weight loss method and electrochemical measurements for bare, pure nickel coated and CNTs-nickel coated samples. The results showed that addition of CNTs in the deposition process of nickel significantly increased the resistance to corrosion. The anti-corrosion mechanism of the composite coating is also discussed.

Carbon nanotube， Nickel， Composite coating， Corrosion

35浏览
0点赞
0收藏
0分享
385下载
0

引用