无机材料学报2026，Vol.41Issue(3)：322-330,中插5,10.DOI:10.15541/jim20250228
不同化学计量碳化钛的离子辐照损伤行为研究
Ion Irradiation Damage Behavior in Titanium Carbide with Different Stoichiometry
摘要
Abstract
Gen IV nuclear reactors operate in extreme service environments characterized by high temperature and intense irradiation,imposing stringent demands on structural materials and thus necessitating the development of novel irradiation resistant materials.Titanium carbide(TiCx)ceramic is considered as promising structural material for advanced nuclear reactors,attributed to its high melting point,excellent mechanical properties,and excellent corrosion resistance.In this study,TiCx films with different stoichiometries were irradiated with 3 MeV Au2+,aiming to systematically investigate irradiation-induced changes in structural characteristics,surface morphology and mechanical properties under different irradiation fluences.The results revealed that structural disorder of TiCx intensified with increasing irradiation fluence,while the substoichiometric TiCx maintained superior structural stability after irradiation.Surface roughness of substoichiometric TiCx showed no significant variation after irradiation,with no irradiation-induced crack.Additionally,both hardness and elastic modulus of TiCx exhibited an increasing trend after irradiation,demonstrating that substoichiometric TiCx enhanced resistance to irradiation compared to near-stoichiometric counterparts.The native carbon vacancies in substoichiometric TiCx effectively suppress accumulation of irradiation-induced defects,thereby preserving excellent stability.This study provides critical insights into the relationship between stoichiometry and irradiation damage in TiCx,while offering valuable guidance for designing new classes of irradiation-resistant ceramic materials.关键词
碳化钛薄膜/离子辐照/结构分析/表面形貌/力学性能Key words
titanium carbide film/ion irradiation/structural analysis/surface morphology/mechanical property分类
通用工业技术引用本文复制引用
石金瑜,雷一明,王晨旭,张洁,王京阳..不同化学计量碳化钛的离子辐照损伤行为研究[J].无机材料学报,2026,41(3):322-330,中插5,10.基金项目
国家自然科学基金(52372071,U2441266)National Natural Science Foundation of China(52372071,U2441266) （52372071,U2441266）
