緻密なウスタイトの水素還元挙動におよぼす SiO_2 あるいは Al_2O_3 と同時に添加した MgO の影響

概要

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The dense wustite plates containing MgO with SiO_2 or Al_2O_3 were reduced isothermally in H_2 gas stream over a temperature range of 670 to 930℃. By the presence of very small of SiO_2 dissolved in wusuite phase the reduction reaction was promoted at temperatures above 800℃ and retarded at temperatures below 730℃. MgO dissolved in FeO with SiO_2 cancels the effect of SiO_2 mentioned above. Al_2O_3 dissolved in wustite slows down the reduction in initial stage greatly and that in and after middle stage further more. MgO dissolved in wustite with Al_2O_3 slows down the reduction in the initial stage further. Correspondence between reduction rate and structure of reduced iron recognized in this work is same as that in previous works.
社団法人日本鉄鋼協会の論文
1988-11-01