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Abstract：
The purpose of this study is to comprehensively analyze the influence of different fluences of irradiation with Xe23+ heavy ions on alterations in the structural, optical, and strength properties of AlN ceramics and to establish a connection between structural distortions and alterations in the optical and mechanical properties of the ceramics. X-ray diffraction, UV-Vis and Raman spectroscopy, and indentation and single-compression methods were used as research methods. During the study, it was demonstrated that at low irradiation fluences, the main role in the changes in the properties of the AlN ceramics is played by effects related to changes in their optical properties and a fundamental absorption edge shift, which characterizes changes in the electronic properties of the ceramics (changes in the distribution of electron density). A study of the variations in the optical properties of the examined samples in relation to the irradiation fluence showed that when the fluence surpasses 5 × 1011 ion/cm2, an extra-spectral absorption band emerges within the range of 3.38-3.40 eV. This band is distinctive for the creation of vacancy ON-VAl complexes within the damaged layer\'s structure. The presence of these complexes signifies structural deformations and the accumulation of defective inclusions within the damaged layer. An analysis of changes in the parameters of the crystal lattice showed that structural distortions in the damaged layer are due to the accumulation of tensile residual mechanical stresses, an increase in the concentration of which leads to the swelling and destruction of the damaged layer. Some correlations between the mechanical properties of ceramics and the irradiation fluence indicate the ceramics\' remarkable resistance to radiation-induced brittleness and weakening. These effects become apparent only when structural damage accumulates, resulting in the swelling of the crystal lattice exceeding 2.5-3%.
摘要：
本研究的目的是全面分析Xe23重离子辐照的不同通量对结构变化的影响，光学，和AlN陶瓷的强度性能，并在结构变形与陶瓷的光学和机械性能变化之间建立联系。X射线衍射,紫外-可见和拉曼光谱，采用压痕和单压缩方法作为研究方法。在研究期间,事实证明，在低辐照通量下，在AlN陶瓷的性质变化的主要作用是由相关的影响，在其光学性质的变化和基本的吸收边移，表征陶瓷电子特性的变化（电子密度分布的变化）。对所检查样品的光学特性相对于辐照通量的变化的研究表明，当通量超过5×1011离子/cm2时，光谱外吸收带出现在3.38-3.40eV的范围内。该条带对于在受损层的结构内产生空位ON-VAl络合物是独特的。这些复合物的存在表示结构变形和受损层内缺陷夹杂物的积累。对晶格参数变化的分析表明，受损层中的结构变形是由于拉伸残余机械应力的累积所致，浓度的增加导致受损层的膨胀和破坏。陶瓷的机械性能与辐照通量之间的某些相关性表明，陶瓷对辐射引起的脆性和弱化具有显着的抵抗力。只有当结构损伤累积时，这些影响才会变得明显，导致晶格的溶胀超过2.5-3%。
