文献类型：期刊文献

中文题名：基于纳米CT技术的藕状多孔铜三维重构的研究

英文题名：Three-dimensional Reconstruction of Porous Copper Based on Nano-CT Technology

作者：闫新成[1];郭焕萍[2];刘源[3,4];曲迎东[1];李荣德[1]

第一作者：闫新成

机构：[1]沈阳工业大学材料科学与工程学院;[2]北京联合大学工科综合教学实验示范中心;[3]清华大学材料学院;[4]河北清华发展研究院

第一机构：沈阳工业大学材料科学与工程学院

年份：2017

卷号：37

期号：11

起止页码：1273-1276

中文期刊名：特种铸造及有色合金

外文期刊名：Special Casting & Nonferrous Alloys

收录：CSTPCD;;Scopus;北大核心:【北大核心2014】；CSCD:【CSCD_E2017_2018】；

基金：河北省重点研发计划资助项目(15211024D)

语种：中文

中文关键词：定向凝固;藕状多孔铜;三维重构

外文关键词：Directional Solidification, Lotus-type Porous Copper, Three-dimensional Reconstruction

摘要：利用定向凝固法分别在0.55、0.7及1mm/s的拉速下制备出了具有规则气孔分布的藕状多孔铜,并采用非破坏性纳米CT扫描技术对所制备的多孔铜结构进行CT扫描及三维体重构,研究了拉速对气孔形核及形核数目、气孔率以及孔径大小和分布的影响。结果表明,随着凝固进行,气孔形核数目逐渐减少并且趋于稳定,在整个定向凝固过程中,都存在新气孔的形核现象。当拉速增加时,铸锭在相同高度范围内新气孔的形核数目增加,气孔的平均直径减小,气孔的尺寸分布均匀性下降。
The porous copper with regular pore distribution was prepared by directional solidification with different withdrawal speed at 0.55 mm/s,0.7 mm/s and 1 mm/s,respectively.The non-destructive nano CT scanning technique was applied to analyze porous copper structure and make three-dimensional reconstruction.Influences of the withdrawal speed on the number of pore nucleus,porosity and pore size and distribution were investigated.The results reveal that,with the solidification,the number of pore nuclei is decreased gradually and tends to be stable,and the nucleation phenomenon of the new pore is present in the whole orientation solidification process.When the speed is increased,the number of new pores in the ingot is increased with the decrease of the average diameter of the pores and the uniformity of the pore size distribution.