@article{oai:nipr.repo.nii.ac.jp:00004711,
 author = {Kimura,Seiji and Kamei,Kazuhiko and Tsuda,Noritoshi and Saito,Yoshio and Koike,Chiyoe and Kaito,Chihiro},
 journal = {Proceedings of the NIPR Symposium on Antarctic Meteorites},
 month = {Mar},
 note = {P(論文), Alumina produced by oxidation of aluminum in air was studied by infrared spectroscopy and electron microscopy. Infrared spectra of both alumina particles and alumina film oxidized in air showed an absorption peak at 10.8μm, though that of γ-Al_2O_3 particles showed a broad 13μm peak. On the basis of the infrared spectra and electron diffraction pattern, it was concluded that alumina produced by the oxidation of aluminum in air is η-Al_2O_3. The phase transition from η-phase to γ-phase and to α-phase took place at 900℃ and 1100℃, respectively. The relationships between infrared spectra and crystal structure of some alumina phases are discussed.},
 pages = {237--243},
 title = {Electron microscopic and infrared spectral studies on the structure of alumina phases},
 volume = {9},
 year = {1996}
}