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Volume 2003 (2003)
- Issue 210 Pages 199-
- Issue 209 Pages 159-
- Issue 208 Pages 109-
- Issue 207 Pages 65-
- Issue 206 Pages 2-
Volume 2003, Issue 206
Displaying 1-6 of 6 articles from this issue
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Hiroyuki Fujimoto2003 Volume 2003 Issue 206 Pages 2-6
Published: February 28, 2003
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSThe profile fitting method using the least square refinement was applied for the determination of the lattice constants and crystallite sizes of carbon. Firstly, the diffraction profiles of carbon and silicon as an internal standard were decomposed to the Kai and Kα2 profiles by Rachinger's method and then, the peak positions, heights and half widths of the two profiles were estimated. Using the obtained profile parameters as initial values, the least square refinements by Simplex method and Gauss-Newton method were carried out and both of the results were compared. The Gauss-Newton method showed the better convergence performance than that of Simplex method from the viewpoint of the convergence speed and the final convergence point.View full abstractDownload PDF (592K) -
Masahiro Toyoda, Yuji Tani, Yukinori Kude, Osamu Kato, Michio Inagaki2003 Volume 2003 Issue 206 Pages 7-10
Published: February 28, 2003
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSExfoliation of pitch coke particles treated on 1000 and 3000°C was tried via electrolysis in nitric acid and following abrupt heating to 1000°C. Although apparent evidence for intercalation of nitric acid was not clearly observed in potential change during electrolysis up to an electric charge of 1000C and also X-ray diffraction pattern of the sample after electrolysis, the particles of 3000°C-treated coke showed exfoliation, where small pores with relatively homogeneous sizes, 30μm×10μm, were formed by cleaving between hexagonal carbon layers. The exfoliation behavior was supposed to be strongly governed by certain structural constraint which kept the coke particles shape and hindered the intercalation of nitric acid.View full abstractDownload PDF (2730K) -
Yasuhisa Maeda, Takayoshi Hashimoto, Akira Fujishima2003 Volume 2003 Issue 206 Pages 11-13
Published: February 28, 2003
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSBoron-doped conductive diamond electrode showed a high response to Pb2+/PbO2 redox system in HNO3 aqueous solution. A cathodic current peak due to the reduction of PbO2 to Pb2+ was clearly observed on the diamond electrode in the cathodic potential scan after the anodic oxidation at 1.80V vs. saturated calomel electrode (SCE) for 10min in the solution containing Pb2+ ions. A linear relation between the magnitude of cathodic current peak and the concentration of Pb2+ (1-10μmo·dm-3) was obtained without interference of other metal ions (Cu2+, Fe3+, Ni2+, Mn2+) coexisting.View full abstractDownload PDF (413K) -
Yoshio Bando, Dmitri Golberg2003 Volume 2003 Issue 206 Pages 14-20
Published: February 28, 2003
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSStructure and property of boron nitride (BN) nanotubes have been reviewed. New synthesis methods using a substitution reaction and CVD are introduced. The structure of BN nanotubes has a preferential zig-zag arrangement and they show local ordering between shells. Thermal and hydrogen uptake properties of BN nanotubes are also reported.View full abstractDownload PDF (9122K) -
Yutaka Kaburagi2003 Volume 2003 Issue 206 Pages 21-31
Published: February 28, 2003
Released on J-STAGE: July 05, 2011
JOURNAL FREE ACCESSDownload PDF (2587K) -
[in Japanese]2003 Volume 2003 Issue 206 Pages 37
Published: February 28, 2003
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSDownload PDF (152K)
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