Microstructural investigation of CaTiO3 formed mechanochemically by dry grinding of a CaO-TiO2 mixture

Guomin Mi; Yasukazu Murakami; Daisuke Shindo; Fumio Saito

doi:10.1016/S0032-5910(99)00045-5

Microstructural investigation of CaTiO₃ formed mechanochemically by dry grinding of a CaO-TiO₂ mixture

Guomin Mi, Yasukazu Murakami, Daisuke Shindo, Fumio Saito

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	75-79
Number of pages	5
Journal	Powder Technology
Volume	104
Issue number	1
DOIs	https://doi.org/10.1016/S0032-5910(99)00045-5
Publication status	Published - 1999 Aug 3
Externally published	Yes

Keywords

Dry grinding
Microcrystal
Microstructure

ASJC Scopus subject areas

Chemical Engineering(all)

Access to Document

10.1016/S0032-5910(99)00045-5

Cite this

@article{dcbcd5924eb64253a694cf855edd0b2f,

title = "Microstructural investigation of CaTiO3 formed mechanochemically by dry grinding of a CaO-TiO2 mixture",

abstract = "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.",

keywords = "Dry grinding, Microcrystal, Microstructure",

author = "Guomin Mi and Yasukazu Murakami and Daisuke Shindo and Fumio Saito",

note = "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.",

year = "1999",

month = aug,

day = "3",

doi = "10.1016/S0032-5910(99)00045-5",

language = "English",

volume = "104",

pages = "75--79",

journal = "Powder Technology",

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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.

KW - Dry grinding

KW - Microcrystal

KW - Microstructure

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