三元层状材料结构调控及性能研究进展

[an error occurred while processing this directive]

三元层状材料结构调控及性能研究进展

丁浩明¹^,²^,³(

), 李勉¹^,³, 李友兵¹^,³, 陈科¹^,³, 肖昱琨¹^,³, 周洁⁴, 陶泉争⁴, 尹航⁵, 柏跃磊⁵, 张毕堃⁶, 孙志梅⁶, 王俊杰⁷, 张一鸣¹^,³, 黄振莺⁸, 张培根⁹, 孙正明⁹, 韩美康¹⁰, 赵双¹¹, 王晨旭¹¹, 黄庆¹^,³(

)

Progress in Structural Tailoring and Properties of Ternary Layered Ceramics

DING Haoming¹^,²^,³(

), LI Mian¹^,³, LI Youbing¹^,³, CHEN Ke¹^,³, XIAO Yukun¹^,³, ZHOU Jie⁴, TAO Quanzheng⁴, Johanna Rosen⁴, YIN Hang⁵, BAI Yuelei⁵, ZHANG Bikun⁶, SUN Zhimei⁶, WANG Junjie⁷, ZHANG Yiming¹^,³, HUANG Zhenying⁸, ZHANG Peigen⁹, SUN Zhengming⁹, HAN Meikang¹⁰, ZHAO Shuang¹¹, WANG Chenxu¹¹, HUANG Qing¹^,³(

)

图22. 辐照环境下MAX相材料中的缺陷产生和微观结构转变

Fig. 22. Defect generation and microstructural transformation in MAX phase materials under irradiation
(a) STEM HAADF (high-angle annular dark-field) image along [11¯20] of Ti₃AlC₂ irradiated with 1 MeV Au ions, showing direct evidence of cation antisite defects. The white arrows indicate the initial Al layers, whose image contrast is altered when compared with the initial hexagonal structure^[295]; (b, c) Contrast profiles along line 1 and line 2 in (a), respectively, which directly show the variation of contrast arising from the formation of Ti_Al-Al_Ti antisite defects produced by ion irradiation^[295]; (d) TEM image of Ti₃(Si,Al)C₂ being irradiated at 0.2 dpa indicating a cluster of point defects (black dots)^[296]; (e-g) Phase transformation (hcp to γ to fcc solid solution) processes with chemical disorder induced by ion irradiation in a typical MAX phase, Ti₃AlC₂ (hcp: hexagonal close packing; fcc: face-centered cubic)^[295]