This study investigated the interdiffusion of calcium ferrite/calcium titanate system in the time range of 0–120 min by the diffusion couple method in a CO/N₂ reducing atmosphere at 700°C. The results show that after the diffusion reaction occurred, no longitudinal agglomerations were present on the substrate surface on the calcium titanate side. When the diffusion time was increased to 105 min, a net vacancy flow from calcium titanate to calcium ferrite might have occurred, causing the surface of the calcium ferrite substrate to collapse. The thickness of the diffusion layer of the calcium ferrite/calcium titanate system was about 17–48 µm, which conforms to the parabolic law of diffusion. The diffusion coefficient and the Ti⁴⁺ concentration in the calcium ferrite/calcium titanate system are related. This shows an increase in the diffusion coefficient with the increase of Ti⁴⁺ concentration, and the diffusion coefficient value was in the range of 10⁻¹²–10⁻¹¹ cm²·s⁻¹.

这项研究通过扩散偶合方法在700°C的CO / N ₂还原气氛中研究了0-120分钟范围内铁酸钙/钛酸钙体系的相互扩散。结果表明，在发生扩散反应之后，在钛酸钙侧的基材表面上不存在纵向附聚。当扩散时间增加到105分钟时，可能会发生从钛酸钙到铁氧体钙的净空位流动，从而导致铁氧体钙基体表面塌陷。铁氧体钙/钛酸钙体系扩散层的厚度约为17-48 µm，符合抛物线扩散定律。扩散系数和Ti ⁴⁺铁氧体钙/钛酸钙体系中的浓度是相关的。这表明扩散系数随Ti ⁴⁺浓度的增加而增加，并且扩散系数值在10 ^-12 –10 ^-11 cm ² ·s ^-1的范围内。