TY - JOUR
T1 - Microstructural investigation of CaTiO3 formed mechanochemically by dry grinding of a CaO-TiO2 mixture
AU - Mi, Guomin
AU - Murakami, Yasukazu
AU - Shindo, Daisuke
AU - Saito, Fumio
N1 - Funding Information:
One of the authors (G. Mi) is grateful to the Ministry of Education, Science and Culture of Japan (Monbusho) for the financial support provided through the Monbusho Scholarship.
PY - 1999/8/3
Y1 - 1999/8/3
N2 - Microstructure of the CaO-TiO2 mixture ground under dry atmospheric condition using a planetary ball mill was investigated by transmission electron microscopy-energy dispersive X-ray spectroscopy (TEM-EDX) and high resolution transmission electron microscopy (HR-TEM) with selected area electron diffraction (SAED) analysis. According to the TEM observation, the mixtures ground for about 2 h or more consist of many fine particles of about 20 nm. The CaTiO3 microcrystals are formed in the mixture ground for about 2 h or more. One of the lattice planes, {121} is clearly observed in the HR- TEM micrograph of the 5-h ground mixture, while the lattice image is partly detected in the mixture ground for about 2 h or less. The grains grow in size in the prolonged grinding, and their sizes reach about 20 nm at 5 h grinding by the TEM observation. The size of microcrystals becomes larger with increasing grinding time.
AB - Microstructure of the CaO-TiO2 mixture ground under dry atmospheric condition using a planetary ball mill was investigated by transmission electron microscopy-energy dispersive X-ray spectroscopy (TEM-EDX) and high resolution transmission electron microscopy (HR-TEM) with selected area electron diffraction (SAED) analysis. According to the TEM observation, the mixtures ground for about 2 h or more consist of many fine particles of about 20 nm. The CaTiO3 microcrystals are formed in the mixture ground for about 2 h or more. One of the lattice planes, {121} is clearly observed in the HR- TEM micrograph of the 5-h ground mixture, while the lattice image is partly detected in the mixture ground for about 2 h or less. The grains grow in size in the prolonged grinding, and their sizes reach about 20 nm at 5 h grinding by the TEM observation. The size of microcrystals becomes larger with increasing grinding time.
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U2 - 10.1016/S0032-5910(99)00045-5
DO - 10.1016/S0032-5910(99)00045-5
M3 - Article
AN - SCOPUS:0033520052
SN - 0032-5910
VL - 104
SP - 75
EP - 79
JO - Powder Technology
JF - Powder Technology
IS - 1
ER -