利用透射电镜研究冲刷腐蚀纯铜试样的表面组织. 结果表明, 冲刷腐蚀后纯铜表面存在位错胞及六角形位错网络和纳米晶. 纳米晶的形成机制为纯铜遵循六角形位错网络相互作用不断细化晶粒, 最终由小角度晶界的亚晶逐步演变成大角度晶界的纳米晶.
The microstructure of pure copper which was thinned due to erosion-corrosion was examined by transmission electron microscope (TEM). The results showed that dislocation cells, hexagonal dislocation network and nanocrystallines were observed in the sample. The formation mechanism of nanocrystallines is proposed that the formed hexagonal dislocation networks interact with each other and thereby gradually reduce the size of grains. Finally, nanocrystallines form by transformation from sub-grains with low angle grain boundaries．
参考文献
| [1] | 郑玉贵, 姚治铭, 柯伟. 冲刷腐蚀的研究近况[J].材料科学与工程, 1992, 10(3): 21.[2] 姜晓霞, 李诗卓, 李曙. 金属的腐蚀磨损[M]. 北京:化学工业出版社, 2003: 407.[3] 王日义. 紫铜在流动海水中的腐蚀及防护[J]. 材料开发与应用, 1994, 9(6): 24.[4] 黄孝瑛, 侯耀永, 李理. 电子衍衬分析原理与图谱[M]. 济南:山东科学技术出版社, 2005: 97. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%