Zr-Al-Co-Cu块状金属玻璃晶化相的TEM研究  

TEM study of the crystallization phases of Zr-Al-Co-Cu bulk metallic glasses

作　　者：赵兵兵[1] 李春艳[1] 王英敏[1] 石勇[2] 董闯[1] 

机构地区：[1]大连理工大学三束材料改性教育部重点实验室,辽宁大连116024 [2]大连理工大学材料环境学院,辽宁大连116024

出　　处：《电子显微学报》2013年第1期14-17,共4页Journal of Chinese Electron Microscopy Society

基　　金：国家自然科学基金资助项目(No.51131002;No.51178076)

摘　　要：采用非自耗电弧炉铜模吸铸方法制备成分为Zr55.8Al19.4Co17.4Cu7.4块状金属玻璃。利用DSC设备在873K时退火,制备该成分的晶化样品。XRD和TEM测试结果表明,金属玻璃过冷液体的晶化产物是一个为Al2CoZr6相(a=0.79nm,c=0.68nm),另一个为底心正交结构的未知相(a=1.32nm,b=0.81nm,c=0.69nm)的混合物。Zr55 s Al19.4 COLT. 4 Cu7. 4 bulk metallic glasses （BMG） were successfully fabricated through vacuum arc melting furnace under argon gas atmosphere with suction-casting into a water-cooling-copper mold. Crystallization specimens were annealed at 873K using differential scanning calorimetry （DSC） and investigated by X-ray diffractometer and transmission electron microscopy. The results showed the crystallization counterparts were the mixture of two phases, one known A12 CoZr6 phase （ a = 0.79 nm, c = 0. 68 nm） and an unknown base-centered-orthorhombic phase（a = 1.32 nm ,b =0. 81 nm,c =0. 69 nm）. The two phases are structurally very complex.

关 键 词：Zr-Al-Co-Cu 块状金属玻璃 晶化相 

分 类 号：TG139.8[一般工业技术—材料科学与工程]