中文摘要：

研究了不同温度和不同时间条件下C还原Fe- Cr- O体系所得产物的形态，样品主要包括FeCr2 O4＋C和Fe2 O3＋2Cr2 O3＋C两种体系。两种样品的还原度均随温度升高而升高，反应接近平衡时还原率均在90%以上。 C还原FeCr2 O4和Fe2 O3-Cr2 O3的过程大致相同，且最终还原产物基本组成均为Fe-Cr-C合金和金属碳化物（主要为Cr7 C3）。针对最终还原产物中Fe-Cr-C合金和金属碳化物的含量提出了一种估算方法，其估算结果与理论计算结果基本吻合。结果显示，最终产物中Fe-Cr-C合金量随温度升高而升高，碳化物含量随温度升高而降低，且不同温度条件下所获得的Fe-Cr-C合金成分不同。

英文摘要：

The morphology of the reduction products of Fe-Cr-O systems by C at different temperatures and time intervals was stud-ied in this paper. The samples include two systems of FeCr2 O4 ＋C and Fe2 O3 ＋2Cr2 O3 ＋C. It is found that the reduction degrees of the two samples increase with increasing temperature, and the reduction degree can be above 90% when the reaction is close to balance. The reduction processes of FeCr2 O4 and Fe2 O3-Cr2 O3 are similar and the final reduction products are composed of Fe-Cr-C alloys and metal carbides （ mainly Cr7 C3 ） . A method was proposed to estimate the contents of Fe-Cr-C alloys and metal carbides in the final reduction products, and the estimated results agree with the calculated data. It is shown that the content of Fe-Cr-C alloys increa-ses while the content of metal carbides decreases with increasing temperature, and the composition of Fe-Cr-C alloys varies with temper-ature.