Xiliang NIE
,
Yumei ZHOU
,
Lieping ZHONG and Dingsheng WANG(Lab. for Surface Physics
,
Institute of Physics
,
Chinese Academy of Sciences
,
Beijing 100080
,
China)Renhui WANG(Dept. of Physics
,
Wuhan University
,
Wuhan 430072
,
China)Yiying YE(Center of Instrument
材料科学技术（英文）
An accurate and simple model of stacking fault energy for alloys (solid solutions) has beendeveloped based on the embedded-atom method. The calculated value of stacking fault energy35 mJ/m2 for 304 austenitic stainless steel, is in a good agreement with the experimental one,30 mJ/m2. In the present model we find that the Hirth's empirical relationship is also suitablefor alloy.
关键词:
李焕勇
,
介万奇
,
熊鹏
,
付红志
稀有金属材料与工程
在NiE(E=S,Se)纳米粒子辅助下,采用CVD方法,在NiE(E=S,Se)-Zn系统中成功生长出立方闪锌矿结构一维ZnE(E=S,Se)纳米线.生长的ZnSe和ZnS纳米线长度达几十微米,具有接近理想化学计量比的成分和较高的结晶质量.研究表明,ZnE纳米线生长过程中,ZnNi合金充作实际的催化剂,生长遵循氧化还原反应助VLS机理.基于此机理,通过调控NiE纳米粒子的尺寸可以有效控制ZnE纳米线的直径.
关键词:
Ⅱ-Ⅵ族化合物
,
纳米线
,
ZnS
,
ZnSe
,
VLS生长机制
