【摘要】 研究常温下He离子辐照对Ti₃AlC₂材料形貌和结构的影响并对其机理进行了分析。采用能量为70 keV,剂量为1×10¹⁷ions/cm²,位移损伤峰值为16.4 dpa的He离子注入Ti₃AlC₂材料;发现Ti₃AlC₂材料辐照损伤和He离子浓度有关,随着He离子浓度增大,辐照损伤程度越大;Ti₃AlC₂材料经过He离子辐照后产生会有孔洞、凸起和氦气泡产生;与此同时,Ti₃AlC₂结构上发生ɑ相到β相的转变,并对Ti₃AlC₂材料的损伤机理进行分析。更多还原

【Abstract】 The effects of He ion irradiation on the morphology and structure of Ti₃AlC₂ were studied by He ion implantation with energy of 70 ke V,dose of 1 × 10¹⁷ ions/cm² and 16. 4 dpa peak. It was found that the He ion concentration was related to the irradiation damage of Ti₃AlC₂ material. With the increasing of concentration of He ion,the degree of irradiation damage of Ti₃AlC₂ increases. It was found that He ion irradiation resulted in the formation of holes,cracks,bumps,He bubbles and the phase transformation in the Ti₃AlC₂ material. The related mechanism was analyzed.更多还原