燕山大学学报2024，Vol.48Issue(3)：204-214,11.DOI:10.3969/j.issn.1007-791X.2024.03.002
α'-AlMnSi准晶近似相晶体结构研究
Study on crystal structure of a novel quasicrystal approximant α'-AIMnSi
摘要
Abstract
A new cubic quasicrystal approximant phase α'-AlMnSi,with space group Im(3)was discovered from the educts obtained by spark plasma sintering of mixed Al,Mn and Si in the stoichiometric ratio 74∶20∶6 and determined by mainly by single-crystal X-ray diffraction combined with scanning electron microscope equipped with energy dispersive X-ray spectroscopy.The new phase is different from the previously reported primitive cubic phase α-AlMnSi with space group Pm(3)although they have quite similar lattice parameters.The refined structural model of the new phase has been compared with available refined crystal structure models of α-AlMnSi,α-AlFeSi as well as α-AlReSi,which suggest that the transformation between the α-AlMnSi(Pm(3))to the α'-AlMnSi(Im(3))is dominated by the splitting of Al atoms.Finally,the topological building units of the α'-AlMnSi phase has been analyzed in detail by the nanocluster method.关键词
金属间化合物/α'-AlMnSi/晶体结构/无序/单晶X射线衍射Key words
intermetallic/α'-AlMnSi/crystal structure/disorder/single-crystal X-ray diffraction分类
矿业与冶金引用本文复制引用
范长增,夏铮,李豪,刘一博,张硕,温斌,张立峰..α'-AlMnSi准晶近似相晶体结构研究[J].燕山大学学报,2024,48(3):204-214,11.基金项目
国家自然科学基金资助项目(52173231,51925105) （52173231,51925105）
河北省自然科学基金资助项目(E2022203182) （E2022203182）
