Zr_(41)Ti_(14)Cu_(12.5)Ni_(10)Be_(22.5)块体非晶合金结构自由体积周围化学环境的研究  

Study of Chemical Ordering around the Structural Free Volume in Bulk Amorphous Zr_(41)Ti_(14)Cu_(12.5)Ni_(10)Be_(22.5) Alloys

作　　者：张克勤[1] 

机构地区：[1]燕山大学亚稳材料制备技术与科学国家重点实验室,河北秦皇岛066004

出　　处：《稀有金属材料与工程》2009年第8期1429-1431,共3页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(10374078);河北省自然科学基金(502172)

摘　　要：采用X射线衍射(XRD)、正电子湮没技术(PAT)-多普勒展宽谱,研究Zr41Ti14Cu12.5Ni10Be22.5块体非晶合金及其过冷液相区结构自由体积周围的元素分布。结果表明:原始制备的Zr41Ti14Cu12.5Ni10Be22.5块体非晶合金其结构自由体积周围主要富集Zr原子,在过冷液相区(T=400℃)等温退火后,在该合金结构自由体积周围探测到Zr、Ti和Be原子。Element distribution of the bulk amorphous Zr41Ti14Cu12.5Ni10Be22.5 alloy and of the zone around the structural free volume in the undercoolcd liquid region was investigated by X-ray diffraction （XRD） and positron annihilation techniques（PAT）-Doppler broadening spectrum. Results show that the structural free volumes in the initially prepared Zr41Ti14Cu12.5Ni10Be22.5 alloy were mainly surrounded by Zr atoms. After the alloy was annealed at 400 ℃ in the undercooled liquid region, both atoms Ti and Be together with Zr were detected to surround the structural free volumes.

关 键 词：Zr41Ti14Cu12.5Ni10Be22.5块体非晶合金 结构自由体积 多普勒展宽谱 化学环境 

分 类 号：TG139.8[一般工业技术—材料科学与工程]