TY - JOUR
T1 - Microstructures of graphite mechanically milled under hydrogen gas or argon gas atmosphere with zirconia balls or chromium steel balls
AU - Tanabe, Eishi
AU - Kitano, Yasuyuki
AU - Yamada, Kazushi
AU - Miyamoto, Minehiro
AU - Ohtani, Yoshikazu
AU - Orimo, Shinichi
AU - Ichikawa, Takayuki
AU - Fujii, Hironobu
PY - 2005/1
Y1 - 2005/1
N2 - Microstructures of graphite mechanically milled under a hydrogen gas or an argon gas atmosphere using zirconia balls as well as chromium steel balls were investigated. Using transmission electron microscopes, high-resolution transmission electron microscopy (HREM), selected area electron diffraction (SAD), electron energy loss spectroscopy (EELS) and energy dispersive X-ray analysis (EDS) were carried out to compare the microstructures. Hydrogen concentration reaches up to 7.4 mass% after 80 h milling under a hydrogen gas atmosphere using chromium steel balls and homogeneous distribution of iron nano crystals was observed. No significant difference was observed in microstructures of 80 h milled graphite under the different gas atmosphere using the balls of different materials. This suggests that the significant absorption of hydrogen into the mechanically milled graphite strongly relates to the iron nano crystals included there.
AB - Microstructures of graphite mechanically milled under a hydrogen gas or an argon gas atmosphere using zirconia balls as well as chromium steel balls were investigated. Using transmission electron microscopes, high-resolution transmission electron microscopy (HREM), selected area electron diffraction (SAD), electron energy loss spectroscopy (EELS) and energy dispersive X-ray analysis (EDS) were carried out to compare the microstructures. Hydrogen concentration reaches up to 7.4 mass% after 80 h milling under a hydrogen gas atmosphere using chromium steel balls and homogeneous distribution of iron nano crystals was observed. No significant difference was observed in microstructures of 80 h milled graphite under the different gas atmosphere using the balls of different materials. This suggests that the significant absorption of hydrogen into the mechanically milled graphite strongly relates to the iron nano crystals included there.
KW - Analytical electron microscopy
KW - Electron energy loss spectroscopy
KW - Graphite
KW - High-resolution electron microscopy
KW - Hydrogen absorption
KW - Mechanical milling
KW - Selected area electron diffraction
KW - Transmission electron microscopy
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U2 - 10.2320/jinstmet.69.113
DO - 10.2320/jinstmet.69.113
M3 - Article
AN - SCOPUS:14844358844
SN - 0021-4876
VL - 69
SP - 113
EP - 120
JO - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
JF - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
IS - 1
ER -