Abstract Zircon, ZrSiO4, has a structure that can incorporate actinides. Therefore, the susceptibility of the zircon structure to irradiation damage has been investigated by accelerated irradiation experiments. Synthetic Zr1−xNdxSiO4−x/2 (x = 0, 0.01, 0.10) ceramics were irradiated with 0.5 MeV 4He2+ ions (fluences 1 × 1014–1 × 1017 ions/cm2) at room temperature. The irradiation effects on phase structure and chemical stability of the ceramics were investigated. It is found that the main crystal structure is maintained, however, little amorphization is leaded as a result of intensified irradiation. Raman spectra reveal that the main peaks slightly broaden and weakened with increasing fluence, indicating little amorphization has been induced by irradiation. The irradiation resistance is enhanced by the growing neodymium content. Moreover, microtopography and element distribution have no changed even after irradiation. Although the LRNd increases slightly with increasing Nd loading and irradiation, the excellent chemical stability (∼10−4 g m−2 d−1) is maintained.

中文翻译：

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α粒子辐照对Nd掺杂锆石陶瓷相演化和化学稳定性的影响

摘要 锆石 ZrSiO4 具有可以结合锕系元素的结构。因此，通过加速辐照实验研究了锆石结构对辐照损伤的敏感性。合成 Zr1−xNdxSiO4−x/2 (x = 0, 0.01, 0.10) 陶瓷在室温下用 0.5 MeV 4He2+ 离子（能量密度 1 × 1014–1 × 1017 离子/cm2）照射。研究了辐照对陶瓷相结构和化学稳定性的影响。发现保持了主要的晶体结构，但由于加强辐照，几乎没有导致非晶化。拉曼光谱显示主峰随着注量的增加而略微变宽和减弱，表明辐照引起的非晶化作用很小。不断增加的钕含量增强了耐辐照性。而且，即使经过辐照，微观形貌和元素分布也没有变化。尽管 LRNd 随着 Nd 负载和辐照的增加而略有增加，但仍保持了优异的化学稳定性（~10-4 g m-2 d-1）。