This cover image, based on the article, number 2000127, by Xiaojun Hu and co‐worker, shows the competitive oxidation of Fe‐C melts by O₂ and CO₂. There are four reactions on the surface of Fe‐C melts, and the isotope gases of ¹⁸O₂ and ¹³CO₂ are used to distinguish the specific roles. The mechanisms of competitive reaction can be deduced according to the composition change of various isotopic gases measured online.

中文翻译：

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同位素示踪法在Fe–C熔体中竞争性氧化O2和CO2

该封面图像基于胡小军及其同事的文章2000127，显示了Fe 2 C熔体被O ₂和CO ₂竞争性氧化。Fe-C熔体表面有四个反应，并且使用¹⁸ O ₂和¹³ CO ₂的同位素气体来区分特定作用。可以根据在线测量的各种同位素气体的组成变化推导竞争反应的机理。