Irradiation damage of zirconium carbide with different stoichiometry

IF 3.9 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Vacuum Pub Date : 2025-09-01 Epub Date: 2025-04-21 DOI:10.1016/j.vacuum.2025.114355

Jinyu Shi , Lina Chen , Yiming Lei , Chenxu Wang , Jie Zhang , Jingyang Wang

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Abstract

Zirconium carbide (ZrC) has emerged as attractive candidate material for next-generation fission and fusion energy system that are inevitably exposed to extreme irradiation environment. In this work, irradiation induced damage evolution in ZrC_x (x = 0.55, 0.78, 0.86) induced by 3 MeV Au²⁺ irradiation at the fluences ranging from 1 × 10¹⁴ cm⁻² to 2 × 10¹⁶ cm⁻² at room temperature (RT) was systematically investigated. The observations revealed that the radiation tolerance, especially its resistance to amorphization, was sensitive to the stoichiometry. Additionally, local accumulation of carbon vacancies both in the ordered phases and twin interfaces promotes the recombination of irradiation point defects, thereby enhancing the irradiation tolerance of substoichiometric ZrC_x. This work provides a fundamental understanding of correlation between the stoichiometry and irradiation damage in zirconium carbide.

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不同化学计量的碳化锆辐照损伤

碳化锆（ZrC）已成为不可避免地暴露在极端辐射环境中的下一代裂变和聚变能系统的有吸引力的候选材料。本文系统研究了室温（RT）下3 MeV Au2+辐照诱导ZrCx （x = 0.55, 0.78, 0.86）在1 × 1014 cm−2 ~ 2 × 1016 cm−2范围内的损伤演化。结果表明，材料的耐辐射能力，尤其是抗非晶化能力对化学计量指标非常敏感。此外，有序相和孪晶界面中碳空位的局部积累促进了辐照点缺陷的重组，从而增强了亚化学计量ZrCx的辐照耐受性。这项工作为了解碳化锆的化学计量学与辐照损伤之间的关系提供了基础。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Vacuum 工程技术-材料科学：综合

CiteScore

6.80

自引率

17.50%

发文量

审稿时长

34 days

期刊介绍： Vacuum is an international rapid publications journal with a focus on short communication. All papers are peer-reviewed, with the review process for short communication geared towards very fast turnaround times. The journal also published full research papers, thematic issues and selected papers from leading conferences. A report in Vacuum should represent a major advance in an area that involves a controlled environment at pressures of one atmosphere or below. The scope of the journal includes: 1. Vacuum; original developments in vacuum pumping and instrumentation, vacuum measurement, vacuum gas dynamics, gas-surface interactions, surface treatment for UHV applications and low outgassing, vacuum melting, sintering, and vacuum metrology. Technology and solutions for large-scale facilities (e.g., particle accelerators and fusion devices). New instrumentation ( e.g., detectors and electron microscopes). 2. Plasma science; advances in PVD, CVD, plasma-assisted CVD, ion sources, deposition processes and analysis. 3. Surface science; surface engineering, surface chemistry, surface analysis, crystal growth, ion-surface interactions and etching, nanometer-scale processing, surface modification. 4. Materials science; novel functional or structural materials. Metals, ceramics, and polymers. Experiments, simulations, and modelling for understanding structure-property relationships. Thin films and coatings. Nanostructures and ion implantation.