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H2+注入法研究鈦鐵礦還原微觀機理

Microreaction mechanism of the reduction of ilmenite to iron by H2+ ion implantation

  • 摘要: 在室溫條件下對鈦鐵礦進行了注入H2+離子實驗,結合透射電鏡觀察,研究了鈦鐵礦還原過程中的微觀機理.實驗發現,注入H2+離子后,110方向的金屬鐵晶體在1431方向的鈦鐵礦晶體上生成;在鈦鐵礦還原過程中,金屬鐵的(222)或(222)晶面優先由鈦鐵礦的(4264)和(4264)晶面轉變而來,鈦鐵礦還原到鐵的結構變化是一個漸變過程.

     

    Abstract: H2+ ions were implanted into ilmenite at room temperature, and the microreaction mechanism during the reduction of ilmenite was investigated by transmission electron microscopy. The results indicate that during the course of reduction, metallic iron with110 orientation is formed on ilmenite along1431 direction, (222) or (222) plane of iron is transformed from (4264) or (4264) plane of ilmenite firstly. The structure change during the course of reduction from ilmenite to iron is a gradually changing process.

     

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