首先通过SPS中断烧结技术制备出烧结初期阶段的烧结颈样品。通过FIB技术切取未形成烧结颈孔洞区域，最终获得尖端曲率半径小于100 nm的3DAP检测样品。对获得的原子及离子数据进行二次处理，重构γ基体及γ′相，并通过分析氧浓度在γ基体及γ′相间的差异，以分析氧化物溶解所提供的氧离子的扩散路径。

Firstly, the sample of sintering neck in the initial stage of sintering was prepared by SPS interrupt sintering technology. The 3DAP sample with tip curvature radius less than 100 nm was obtained by cutting the region without sintering neck hole by FIB technique. The obtained atomic and ion data were reprocessed, the γ matrix and γ 'phase were reconstructed, and the diffusion path of oxygen ions provided by oxide dissolution was analyzed by analyzing the difference of oxygen concentration between γ matrix and γ' phase.