Experimental Study of Phase Equilibria in the MnO-"TiO_2"-"Ti_2O_3" System
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概要
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Phase equilibria and liquidus in the system MnO-“TiO2”-“Ti2O3” under controlled atmosphere have been investigated in the temperature range from 1300 to 1550°C and in the range of log pO2 (in atm) from -7.2 (pCO/pCO2=1) to -16.6 (C-CO equilibration). High-temperature equilibration, quenching and electron probe microanalysis (EPMA) were employed to obtain equilibrium compositions of liquid and several solid solutions. The following phases have been observed; molten oxide, manganosite (MnO (s.s.)), rutile (TiO2-δ (s.s.)), spinel (Mn2TiO4-MnTi2O4), pyrophanite (MnTiO3-Ti2O3) and pseudobrookite (“MnTi2O5”-Ti3O5) solid solutions. Liquidus of manganosite and rutile were measured and compared with previous investigations. “MnTi2O5” compound was confirmed to be unstable phase in the MnO-“TiO2” system. It was found in the present study that sub-solidus phase equilibria are affected considerably by oxygen partial pressure.
- 社団法人 日本鉄鋼協会の論文
- 2005-11-15
著者
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Lee Hae-Geon
Graduate Institute of Ferrous Technology (GIFT), Pohang University of Science and Technology (POSTEC
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Lee Hae‐geon
Pohang Univ. Sci. And Technol. (postech) Hyoja‐dong Pohang Kor
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KANG Youn-Bae
Dept. of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH)
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Lee Hae-geon
Graduate Inst. Of Ferrous Technol. (gift) Pohang Univ. Of Sci. And Technol. (postech)
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Kang Youn‐bae
Dept. Of Materials Science And Engineering Pohang University Of Science And Technology (postech)
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Kang Youn-bae
Dept. Of Materials Science And Engineering Pohang University Of Science And Technology (postech)
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