| 纳米Pb薄膜的球化及合并长大过程 |
| |
| 引用本文： | 张丽华,隋曼龄,张磊,李斗星. 纳米Pb薄膜的球化及合并长大过程[J]. 金属学报, 2002, 38(4): 347-351 |
| |
| 作者姓名： | 张丽华 隋曼龄 张磊 李斗星 |
| |
| 作者单位： | 中国科学院金属研究所沈阳材料科学国家(联合)实验室,沈阳,110016 |
| |
| 基金项目： | 国家自然科学基金 59971057，59831020以及 59931030资助项目~~ |
| |
| 摘 要： | 利用透射电子显微镜原位观察技术对纳米Pb薄膜在电子束辐照下的形态变化过程进行了细致的观察研究。结果表明，形态不稳定的纳米Pb薄膜，发生球化转变：转化后的Pb颗粒具有很好的可动性；颗粒的随机运动和碰撞导致颗粒之间的合并长大。Pb颗粒的合并长大速率与Pb颗粒的平均尺寸和碰撞频率有关。从热力学角度对纳米Pb膜球化和Pb颗粒团聚长大的机制进行了探讨。
|
| 关 键 词： | 球化 合并长大 纳米铅薄膜 |
| 文章编号： | 0412-1961(2002)04-0347-05 |
| 修稿时间： | 2001-06-05 |
SPHEROIDIZATION AND COALESCENCE OF NANOMETER Pb FILM |
| |
| ZHANG Lihua,SUI Manling,ZHANG Lei,LI Douxing Shenyang National Laboratory for Materials Science. SPHEROIDIZATION AND COALESCENCE OF NANOMETER Pb FILM[J]. Acta Metallurgica Sinica, 2002, 38(4): 347-351 |
| |
| Authors: | ZHANG Lihua SUI Manling ZHANG Lei LI Douxing Shenyang National Laboratory for Materials Science |
| |
| Abstract: | The morphological instability of nanometer Pb film under electron beam irradiation was investigated using in situ transmission electron microscopy. The morphological instability is characterized by spheroidization of Pb film and coalescence of Pb particles. The Pb particles have good mobility on the Al supporting film. The movement and collision of particles lead to the coalescence growth. The growth rate of coalescence is related to the size of particles and collision frequency. The mechanism of spheroidization and coalescence was discussed. |
| |
| Keywords: | nanometer Pb film spheroidization coalescence |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
