RE^(3+) 4f层单电子数以及晶体结构对Mg_(65)Cu_(25)RE_(10)块体非晶合金GFA的影响  

The Influence of the Single Electronic Number of the RE^(3+) 4f Orbit and the Crystal Structure on the GFA of the Bulk Mg_(65)Cu_(25)RE_(10) Alloys

作　　者：马爱军[1] 彭彪林 程亮[1] 

机构地区：[1]西北矿冶研究院,甘肃白银730900 [2]国家镍钴新材料工程技术研究中心,甘肃兰州730101

出　　处：《甘肃冶金》2010年第5期54-57,共4页Gansu Metallurgy

基　　金：国家863计划(2003AA32X150)

摘　　要：对于Mg65Cu25RE10合金的GFA随原子序数的变化而呈现出先增大后减少的现象,从RE3+4f层电子成单电子数数目的角度对这一现象进行了研究,结果表明:RE3+4f层电子成单电子数数目可能是造成Mg65Cu25RE10合金的GFA随原子序数的变化的主要原因。同时从RE晶体结构的角度对Mg65Cu25RE10合金的GFA进行了研究,结果表明:不同晶体结构的RE对Mg65Cu25RE10合金的GFA影响不同,造成这种情况的出现,可能与其晶体结构的致密度有关。The phenomenon that the GFA of Mg65Cu25RE10alloys initially increases with the increase of the atomic numbers and reaches a maximum for Gd and then decreases with the further increase of the atomic number is researched from the view of the single electronic number of the RE3＋4f orbit.It is shown that the single electronic number of the RE3＋4f orbit leads to the forming of the phenomenon.At the same time different crystal structures show different influence on the GFA of the bulk Mg65Cu25RE10 alloys,which maybe is caused by their density.

关 键 词：非晶态块体合金 玻璃形成能力 单电子数 晶体结构 

分 类 号：TG139.8[一般工业技术—材料科学与工程]