论文标题
孔形成对氧化还原驱动相变的影响
Effect of Pore Formation on Redox-Driven Phase Transformation
论文作者
论文摘要
当固态氧化还原驱动的相变与质量损失相关时，会产生发展成孔的空缺。这些毛孔可以影响某些氧化还原和相变步骤的动力学。我们使用氢作为模型系统的氧化铁还原，研究了合并的实验理论研究中孔内和孔隙中的结构和化学机制。氧化还原产物（水）积聚在孔内，并将已经还原材料的局部平衡转移回到Cubic-Fe1-XO中（其中X是指Fe不足，空间组FM3-M）。这种效果有助于理解氢的缩减，这是Cubic-FE1-XO的氢，这是未来可持续炼钢的关键过程。
When solid-state redox-driven phase transformations are associated with mass loss, vacancies are produced that develop into pores. These pores can influence the kinetics of certain redox and phase transformation steps. We investigated the structural and chemical mechanisms in and at pores in a combined experimental-theoretical study, using the reduction of iron oxide by hydrogen as a model system. The redox product (water) accumulates inside the pores and shifts the local equilibrium at the already reduced material back towards re-oxidation into cubic-Fe1-xO (where x refers to Fe deficiency, space group Fm3-m). This effect helps to understand the sluggish reduction of cubic-Fe1-xO by hydrogen, a key process for future sustainable steelmaking.
