@article{oai:muroran-it.repo.nii.ac.jp:00008170,
 author = {平井,  伸治 and HIRAI, Shinji and 土屋, 美智昭 and TSUCHIYA, Michiaki and 片山,  博 and KATAYAMA, Hiroshi},
 journal = {室蘭工業大学研究報告. 理工編, Memoirs of the Muroran Institute of Technology. Science and engineering},
 month = {Nov},
 note = {application/pdf, Experiments were conducted in order to elucidate the formation mechanism of TiB₂by the simultaneous magnesio-thermic reduction of TiO₂- B₂O₃mixture. TiB₂was formed at 897 K or more, and its X-ray diffraction intensity increased with increasing temperature. In addition to MgO and MgTi₂O₄, which were main by-products, Mg₃(BO₃）₂ and (Mg, Ti) O were produced at lower temperature and at higher temperature, respectively. In the magnesio-thermic reduction of TiO₂, Ti₂, O was identified at 1273 K or more, and its X-ray diffraction intensity increased to a maximum at 1373 K, but finally disappeared at 1573 K. In reduction of short time period, however, the formation of TiO₂ was observed even at 1573 K. On the other hand, in the magnesio-thermic reduction of B₂O₃, the formation of boron could not be identified by X-ray diffraction, but weak diffraction peaks of B₄C were detected. It was inferred from these results that amorphous boron had been formed. Thermodynamic consideration clarified that TiO₂is easily reduced to TiO with magnesium, but the additional reduction of TiO to Ti is difficult at higher temperature. Therefore, since the formation of boron precedes in the simultaneous magnesio-thermic reduction of TiO₂- B₂O₃ mixture, it was concluded that TiB₂is finally formed according to the next reaction : TiO + Mg + 2B = TiB₂ + MgO.},
 pages = {61--69},
 title = {TiO₂- B₂O₃混合物のMg熱還元によるTiB₂の生成反応},
 volume = {41},
 year = {1991},
 yomi = {ヒライ, シンジ and ツチヤ, ミチアキ and カタヤマ, ヒロシ}
}