We report an as-hot-pressed zirconium nitride polycrystalline with its primary crystal structure maintained no change but lattice defects and features were introduced at nanometre-scale after being irradiated by 4 MeV Au²⁺ with a total fluence of 5 × 10¹⁶/cm². The variation of grey-level seen in backscattered electron images and electron backscattered diffraction maps directly evidenced the structure integrity of the polycrystalline ZrN is well maintained with no crystal structure change of ZrN. The irradiation depth had no relevance to crystal orientation, and Au deposition peaked at a depth of ∼0.58 μm with a near-Gaussian distribution. Within a depth <0.58 μm, long dislocation lines were developed with a Burgers vector of [0$\overline{1}$]_b/2 and density 3.2 × 10¹⁴ 1/m²; beyond this depth, dislocation loops were formed with much higher density. In the ionization zone, cubic ZrO₂ crystallites precipitated in a size of ∼5 nm. The irradiation damage processes are discussed based on the observed features.

我们报道了一种热压氮化锆多晶，其初晶结构保持不变，但在被4 MeV Au ²⁺辐照后，以纳米级引入了晶格缺陷和特征，总通量为5×10 ¹⁶ / cm ²。在反向散射电子图像和电子反向散射衍射图中看到的灰度变化直接证明了多晶ZrN的结构完整性得到了很好的维持，而ZrN的晶体结构没有变化。照射深度与晶体取向无关，并且Au沉积在约0.58μm的深度处达到峰值，具有近高斯分布。在<0.58μm的深度内，使用[0的Burgers向量]形成了长的位错线$\overline{\mathrm{1个}}$] _b / 2和密度3.2×10 ¹⁴ 1 / m ² ; 超过此深度，就形成了密度高得多的位错环。在电离区中，立方ZrO ₂晶体以〜5 nm的尺寸沉淀。根据观察到的特征讨论了辐照损伤的过程。